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Электронный компонент: UBA1702

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DATA SHEET
Product specification
Supersedes data of 1996 Jan 09
File under Integrated Circuits, IC03
1997 Sep 29
INTEGRATED CIRCUITS
UBA1702; UBA1702A
Line interrupter driver and ringer
1997 Sep 29
2
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
FEATURES
Speech part
Driver for the line interrupter that can be either a PMOST
when UBA1702 is used or a PNP when UBA1702A is
used
Adjustable over-current protection
Adjustable over-voltage protection for transmission
circuit
Adjustable mute (dialling mode voltage; DMO or NSA)
Adjustable current loop detection (hook switch status)
Microcontroller supply
Provision for electronic hook switch.
Ringer part
Over-voltage protection
Ringer frequency output for frequency discrimination
Adjustable ringer threshold for piezo-driver enable
Three bits ringer volume control
Bridge-tied-load (BTL) output stage for piezo transducer
Fast start-up microcontroller supply.
Miscellaneous
Separated ground pins for transmission circuit interface
and control signals (e.g. for TEA1064A)
Possibility to supply the microcontroller with an external
voltage source.
APPLICATIONS
Telephone sets with software controlled ringer function
Telephone sets with electronic hook switch.
GENERAL DESCRIPTION
The UBA1702; UBA1702A performs the high voltage
interface and ringer functions of the corded analog
telephone set in close cooperation with a microcontroller
and transmission circuit.
The UBA1702; UBA1702A incorporates several
protections, a driver for the line interrupter and a ringer.
Because of the practical division of functions between the
microcontroller, the transmission circuit and the UBA1702;
UBA1702A, it is possible to have a higher integration level
thereby reducing significantly the number of discrete
components in a telephone set.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
UBA1702
DIP28
plastic dual in-line package; 28 leads (600 mil)
SOT117-1
UBA1702A
DIP28
plastic dual in-line package; 28 leads (600 mil)
SOT117-1
UBA1702T
SO28
plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1
UBA1702AT
SO28
plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1
1997 Sep 29
3
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
QUICK REFERENCE DATA
Speech part: l
line
= 20 mA; DPI = LOW; T
amb
= 25
C; V
EE
= 0 V; unless otherwise specified.
Ringer part: V
line(rms)
= 45 V; f = 25 Hz; using an RC combination of 2.2 k
and 820 nF and a diode bridge between the
line and the RPI input.
Notes
1. Independent of V
RR
if greater than 10 V.
2. Without piezo transducer, dependent on V
RR
.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Speech part
S
WITCH DRIVER AND REFERENCES
(
PINS
SDI, SDO, EHI
AND
DPI); UBA1702A
ONLY
R
SDO
resistance between pins SDO and V
EE
-
2.2
-
k
S
WITCH DRIVER AND REFERENCES
(
PINS
SDI, SDO, EHI
AND
DPI); UBA1702
AND
UBA1702A
R
SDI-SDO
resistance between pins SDI and SDO V
SDI
-
V
SDO
< 12 V
-
1.1
-
M
R
SDI
resistance between pins SDI and V
EE
V
SDI
= 240 V; DPI = HIGH
5
-
-
M
M
UTE SWITCH AND ADJUSTABLE PROTECTION ZENER VOLTAGE
(
PINS
MSI, MSA
AND
ZPA)
V
SPO(M)
adjustable mute voltage referenced to
V
EE
MSI = HIGH;
MSA open-circuit
-
2.7
3
V
V
SPO(Z)
adjustable zener voltage referenced to
V
EE
MSI = LOW;
ZPA open-circuit
11
12
13
V
C
URRENT MANAGEMENT
(
PINS
SPI, SPO, CDA, CLA
AND
CDO)
l
SPI(lim)
current limitation (pin SPI)
CLA shorted to V
EE
-
120
-
mA
I
SPI(det)
current detection (pin SPI)
CDA open-circuit
2
3
4
mA
M
ICROCONTROLLER SUPPLY
(V
DD
AND
V
BB
)
V
DD
supply output voltage referenced to
V
SS
V
BB
> 3.7 V; I
DD
=
-
1 mA
3.0
3.3
3.6
V
Ringer part
P
ROTECTION
(
PIN
RPI)
I
RPI(max)
maximum input current
70
-
-
mA
R
INGER THRESHOLD AND FREQUENCY DETECTION
(
PINS
V
RR
, RTA
AND
RFO)
V
RR(th)
ringer supply threshold voltage
referenced to V
SS
RTA open-circuit
-
11
-
V
V
OLUME CONTROL
(
PINS
RV0, RV1
AND
RV2)
G
s
step resolution
(RV2, RV1, RV0) from
(0, 0, 0) to (1, 1, 0); note 1
-
6
-
dB
G
ls
last step resolution
(RV2, RV1, RV0) from
(1, 1, 0) to (1, 1, 1); note 2
-
9.5
12
dB
R
INGER MELODY INPUT AND PIEZO DRIVER
(
PINS
RMI, ROA
AND
ROB)
V
o(max p
-
p)
maximum output voltage between pins
ROA and ROB (peak-to-peak value)
RV2 = 1; RV1 = 1; RV0 = 1
-
28.7
32
V
1997 Sep 29
4
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
MBE184
VDD
VSS
DIGITAL
-TO-
ANALOG
CONVERTER
VDD
VSS
VDD
VSS
VDD
VOLUME
CONTROL
15
14
13
RV0
RV1
RV2
16
RINGER
THRESHOLD
11
R ref
VSS
RINGER MELODY INPUT AND PIEZO DRIVER
1/2 VDD
VDD
VDD
VRR
VSS
VRR
VSS
22
ROA
ROB
20
R ref
RINGER
PROTECTION
RPI
23
VDD
VSS
12
RINGER FREQUENCY
DETECTION
VSS
SUPPLY
RINGER
VDD
REFERENCES
Vref
18
19
VDD
VBB
Sref
Rref
SPO
VSS
UBA1702; UBA1702A
UBA1702T; UBA1702AT
7
17
VEE
VSS
VDD
VSS
8
MSI
R ref
MSA
S ref
ZPA
MUTE SWITCH
ZENER PROTECTION
SPEECH
10
9
Sref
SENSE
Sref
VDD
VSS
LINE CURRENT MANAGEMENT
6
5
26
24
25
CLA
CDO
CDA
SPI
SPO
VRR
RTA
21
RMI
SWITCH
DRIVER
VSS
14 V
2
1
SDI
SDO
DPI
EHI
4
28
RFO
VRR
1997 Sep 29
5
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
PINNING
SYMBOL
PIN
DESCRIPTION
SDI
1
switch driver input
SDO
2
switch driver output
n.c.
3
not connected
DPI
4
dialling pulse input
SPI
5
speech part input
SPO
6
speech part output
V
EE
7
ground for transmission circuit
MSI
8
mute switch input
ZPA
9
Zener protection adjustment input
MSA
10
mute switch adjustment input
RTA
11
ringer threshold adjustment input
RFO
12
ringer frequency output
RV0
13
ringer volume input; bit 0
RV1
14
ringer volume input; bit 1
RV2
15
ringer volume input; bit 2
RMI
16
ringer melody input
V
SS
17
ground for microcontroller and
ringer
V
DD
18
microcontroller supply voltage
V
BB
19
supply voltage from transmission
circuit
ROB
20
ringer output B
V
RR
21
ringer supply voltage
ROA
22
ringer output A
RPI
23
ringer part input
CDO
24
current detection output
CLA
25
current limitation adjustment input
CDA
26
current detection adjustment input
n.c.
27
not connected
EHI
28
electronic hook switch input
Fig.2 Pin configuration.
handbook, halfpage
1
2
3
4
5
6
7
8
9
10
11
12
13
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
SDI
RV1
RV0
RFO
RTA
MSA
ZPA
V
SPO
DPI
n.c.
SDO
SPI
MSI
EE
RV2
RMI
ROB
V
ROA
RPI
CDO
CLA
CDA
n.c.
EHI
RR
VBB
VDD
VSS
UBA1702
UBA1702T
UBA1702A
UBA1702AT
MBE183
1997 Sep 29
6
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
FUNCTIONAL DESCRIPTION
The values given in this functional description are typical
values except when otherwise specified.
Speech part
The speech part consists of three blocks, the switch driver,
the line current management and the mute switch (DMO or
NSA) combined with an adjustable over-voltage (zener)
protection circuit. The reference block, which generates
reference voltages and currents, is also used in the speech
part (see Fig.1) by the mute switch block.
S
WITCH DRIVER
(
PINS
SDI, SDO, EHI
AND
DPI)
UBA1702
The UBA1702 switch driver block is intended to generate
the appropriate signal to drive an external PMOST
interrupter. The source and gate of this PMOST are
respectively connected to SDI and SDO. The electronic
hook switch input (EHI) and the dialling pulse input (DPI)
signals control the state of this PMOST.
The EHI pin is provided with high voltage capability. When
the voltage applied at pin EHI is HIGH, the switch driver
block will start and generate the proper signals to switch on
the external PMOST interrupter.
When the telephone set is equipped with a mechanical
hook switch, pin EHI can be connected directly to the
switch driver input (pin SDI). For electronic hook switch
applications, the EHI pin can be driven by the
microcontroller output.
In some special applications, the EHI pin can be current
driven. In such a case, the current available at SDO to turn
on the PMOST interrupter is approximately 10 times the
EHI input current (providing I
EHI
< 2
A).
The EHI pin presents an impedance of 250 k
at low input
voltage. When the applied voltage at EHI goes above
approximately 30 V, the EHI input current remains
constant (see Fig.3) so that the EHI impedance increases.
The DPI is designed to switch on or off the external
PMOST interrupter (providing EHI is HIGH). When the
voltage applied at pin DPI is HIGH, the switch driver block
turns off the external PMOST interrupter. When the
voltage applied at pin DPI is LOW, the switch driver block
turns on the external PMOST interrupter.
The external PMOST interrupter is controlled by the
voltage between the switch driver input and output
(pins SDI and SDO).
When the voltage applied at pin EHI is HIGH and the
voltage applied at pin DPI is LOW, the voltage at SDO is
pulled down to a value less than 0.2 V in order to create a
high source-gate voltage (V
SG
) for the external PMOST.
However, in order to avoid break-down of the external
PMOST, the voltage difference between SDI and SDO is
internally limited to 14 V.
When the voltage applied at pin EHI and the one applied
at pin DPI are both HIGH, pin SDO can be considered as
being connected to pin SDI via a 1.1 M
pull-up resistor
while the impedance between SDI and V
EE
becomes very
high (a few M
)
.
When the voltage applied at pin EHI is LOW, whatever the
one applied at DPI is, pin SDO can be considered as being
connected to pin SDI via a 1.1 M
pull-up resistor while
the impedance between SDI and V
EE
becomes almost
infinite.
Fig.3 EHI input characteristics.
handbook, halfpage
0
100
200
400
80
IEHI
(
A)
60
20
0
40
MGD178
300
VEHI (V)
1997 Sep 29
7
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
UBA1702A
The UBA1702A switch driver block is intended to generate
the appropriate signal to drive an external PNP interrupter.
The emitter and base of this PNP are respectively
connected to SDI and SDO. The EHI and DPI signals
control the state of this PNP.
The EHI pin is provided with high voltage capability. When
the voltage applied at pin EHI is HIGH, the switch driver
block will start and generate the appropriate signals to
switch on the external PNP interrupter.
When the telephone set is equipped with a mechanical
hook switch, pin EHI can be connected directly to pin SDI.
For electronic hook switch applications, the EHI pin can be
driven by the microcontroller output.
The EHI pin presents an impedance of 250 k
at low input
voltage. When the applied voltage at EHI goes above
approximately 30 V, the EHI input current remains
constant (see Fig.3) so that the EHI impedance increases.
The DPI is designed to switch on or off the external PNP
interrupter (providing EHI is HIGH). When the voltage
applied at pin DPI is HIGH, the switch driver block turns off
the external PNP interrupter. When the voltage applied at
pin DPI is LOW, the switch driver block turns on the
external PNP interrupter.
The external PNP interrupter is controlled by the current
flowing into pin SDO.
When the voltage applied at pin EHI is HIGH and the
voltage applied at pin DPI is LOW, pin SDO can be
considered as being connected to pin V
EE
via a 2.2 k
resistor in order to create a base current for the external
PNP.
When the voltage applied at pin EHI and the one applied
at pin DPI are both HIGH, pin SDO can be considered as
being connected to pin SDI via a 1.1 M
pull-up resistor
while the impedance between SDI and V
EE
becomes very
high (a few M
)
.
When the voltage applied at pin EHI is LOW, whatever the
one applied at DPI is, pin SDO can be considered as being
connected to pin SDI via a 1.1 M
pull-up resistor while
the impedance between SDI and V
EE
becomes almost
infinite.
L
INE CURRENT MANAGEMENT
(
PINS
SPI, SPO, CDA, CLA
AND
CDO)
The line current is measured by an internal 2
resistor
and a sense circuit connected between the speech part
input and output (pins SPI and SPO). The circuit delivers
information about the hook switch status at the current
detection output (pin CDO) and controls the line current
limitation.
When the SPI current exceeds a certain level (3 mA), the
sense circuit injects some image of the SPI current into an
internal resistor (see Fig.1). The created voltage becomes
higher than an internal reference (approximately 0.3 V)
and CDO goes HIGH. This current detection level can be
increased by connecting a resistor between pins CDA
(current detection adjustment) and V
EE
. It is also possible
to connect a capacitor between pins CDA and V
EE
to filter
unwanted AC components of the line current signal. Line
current interruption during pulse dialling influences the
CDO output.
When the SPI current exceeds another current level
(45 mA), the sense circuit injects some image of the SPI
current into an internal resistor (see Fig.1). The created
voltage becomes higher than an internal reference
(approximately 0.4 V) and an internal signal is generated
in order to limit the current in the external interrupter thus
resulting in a line current limitation. This line current
limitation level can be increased up to a maximum value of
120 mA by connecting a resistor between pins CLA
(current limitation adjustment) and V
EE
.
When a PMOST (UBA1702) is used as an interrupter, the
SPI current equals the drain or source current of the
PMOST and thus also equals the line current.
When a PNP (UBA1702A) is used as an interrupter, the
SPI current equals the collector current of the PNP and
thus differs from the line current (the PNP base current
does not flow into the SPI pin).
1997 Sep 29
8
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
M
UTE SWITCH AND ZENER PROTECTION
(
PINS
MSI, MSA
AND
ZPA)
The mute switch is, in fact, a switchable and electronic
zener diode connected between the speech part output
(pin SPO) and V
EE
.
When the voltage applied at the mute switch input
(pin MSI) is LOW, the switch is in over-voltage protection
mode and the maximum SPO voltage is limited to 12 V.
This level can be increased or decreased by connecting a
resistor between pins ZPA (zener protection adjustment)
and V
EE
or ZPA and SPO respectively.
When the voltage applied at pin MSI is HIGH, the switch is
in mute mode (DMO or NSA) resulting in a SPO voltage
below 3 V. This level can be decreased by connecting a
resistor between pins MSA (mute switch adjustment) and
SPO. It should be noted that the mute switch stage is
supplied from V
DD
thus a minimum voltage of
approximately 2.1 V is required on V
DD
.
R
EFERENCE
The bias currents and voltages for the various speech
blocks are generated by the reference block which is, in
most cases, supplied from pin SPO. This block guarantees
a high AC impedance at the SPO pin operating down to a
low SPO voltage. Therefore, most speech part blocks
operate independently from V
DD
.
Ringer part
The ringer part consists of five blocks, the ringer
protection, the ringer threshold, the ringer frequency
detection, the volume control and the piezo driver.
The reference block which generates reference voltages
and currents is also used in the ringer part (see Fig.1).
R
INGER PROTECTION
(
PINS
RPI
AND
V
RR
)
The ringer protection block converts the ringing current
into a limited voltage between the ringer part input
(pin RPI) and V
EE
. This voltage is used (via an internal
diode) to generate the ringer supply voltage V
RR
which is
mainly used for all ringer parts. The voltage at pin V
RR
must be filtered with a 22
F capacitor connected between
pins V
RR
and V
SS
.
In electronic hook switch applications and also in speech
mode (see Fig.8), pin RPI is always connected to the
telephone line (through a series RC network and a diode
bridge). In order not to disturb normal speech operation, a
high AC impedance is present at pin RPI (providing the
speech level is less than 1.5 V (RMS) i.e. 5.7 dBm).
In the DMO or NSA mode (i.e. MSI is HIGH), the voltage
across RPI and V
EE
is limited to 2.1 V. With this feature
and in electronic hook switch applications, several
additional ringers can be placed in parallel without tinkling
during pulse dialling phase.
R
INGER THRESHOLD
(
PIN
RTA)
The piezo driver is internally enabled when the voltage at
pin V
RR
exceeds a threshold level of 11 V. This threshold
level can be increased or decreased by connecting a
resistor between pins RTA (ringer threshold adjustment)
and V
SS
or RTA and V
RR
respectively.
Because of the built-in 6.5 V hysteresis, a voltage change
at pin V
RR
(coming from current consumption increase
when the piezo output is driven with a melody) will have no
influence on this internal enabling signal.
R
INGER FREQUENCY DETECTION
(
PIN
RFO)
The ringer frequency detection block generates a square
wave signal at the ringer frequency output (pin RFO) with
twice the ringer signal frequency. This RFO signal can be
used by the microcontroller for frequency discrimination.
When the voltage at pin RPI drops below the voltage at
pin V
DD
, RFO goes LOW. Pin RFO goes HIGH when the
voltage at pin RPI exceeds the voltage at pin V
RR
.
This V
RR
-
V
DD
hysteresis allows the frequency detection
circuit to ignore parasitic signals superimposed on the
ringing signal.
The voltage at pin EHI must be LOW to get a square wave
at pin RFO. When the voltage at pin EHI is LOW, the
voltage at pin RFO is always HIGH whatever the one at pin
RPI is.
V
OLUME CONTROL
(
PINS
RV0, RV1
AND
RV2)
The volume control input has three bits RV2, RV1 and RV0
to realize eight volume levels. The volume is controlled by
regulating the supply voltage of the piezo output stage.
The first six steps have a fixed value of 6 dB, the value of
the last step (maximum volume) is dependent on the
available voltage at pin V
RR
.
Default setting during start-up is (RV2 = 0, RV1 = 0,
RV0 = 0) which corresponds to minimum volume. In order
not to damage the piezo transducer, the differential output
ROA
-
ROB is internally limited to a value less than
32 V (p-p).
1997 Sep 29
9
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
R
INGER MELODY INPUT AND PIEZO DRIVER
(
PINS
RMI, ROA
AND
ROB)
The input signal at the ringer melody input (pin RMI) may
be a square wave or a sine wave which is generated by the
microcontroller. The input stage incorporates a small
hysteresis (between 0.48V
DD
and 0.52V
DD
) and is
referenced to
1
/
2
V
DD
which is also the DC level of the signal
coming from the microcontroller. Nevertheless, when a
sine wave is used, a coupling capacitor of 10 nF
(connected between pin RMI and the output of the
microcontroller) is required. This 10 nF capacitor value is
enough since the RMI input impedance is approximately
250 k
.
The piezo driver is an output stage for a piezo transducer
which has to be connected between ringer output A and
ringer output B (pins ROA and ROB) as a Bridged Tied
Load (BTL) or between ROA and V
SS
as a Single-Ended
Load (SEL). The ROA and ROB output signals are square
wave and in opposite phase driven by the ringer melody
input stage. The minimum output current capability of the
ROA and ROB outputs is greater than 80 mA at maximum
volume setting (RV2 = 1, RV1 = 1, RV0 = 1) and becomes
even greater during output switching. This gives fast rise
and fall times resulting in a lot of harmonics.
To obtain maximum efficiency, the piezo driver stage is
supplied in series with the V
DD
supply.
R
EFERENCE
The bias current for the various ringer blocks is generated
by the reference block while this block is supplied from pin
V
RR
or V
DD
.
Supply part (pins V
BB
and V
DD
)
The supply block regulates the voltage at pin V
DD
,
referenced to V
SS
, to a typical value of 3.3 V and can
deliver a minimum of 2 mA. This is sufficient to supply
most normal microcontrollers. The voltage at pin V
DD
must
be filtered with a 22
F capacitor connected between
pins V
DD
and V
SS
.
In speech mode, this block is supplied from the
transmission circuit using pin V
BB
. The voltage drop
between V
BB
and V
DD
has been minimized (100 mV at
1 mA, providing 2.5 V < V
BB
< 3.0 V) in order to allow low
voltage operation of the transmission circuit.
In ringer mode, this block is supplied from the ringer part
using pin V
RR
and pin V
BB
which are tied together through
an internal diode (see Fig.1).
When an external (mains or battery) supply is connected
to V
BB
and no speech or ringer signal is applied, V
DD
(3.3 V) is still present.
During on-hook phase, and when a small current is derived
from the line to the microcontroller supply, the circuit stays
in a kind of stand-by mode to provide sufficient voltage at
pin V
DD
. This is done to ensure memory retention in the
microcontroller.
1997 Sep 29
10
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
Notes
1. Continuous.
2. 2 kV surge:
a) according to IEC 805-1 part 5. Test generator 10
s/700
s according to CCITT (Rm1 = 15
and Rm2 = 25
).
b) pulse sequence > 60 s.
c) number of surges: 10.
d) polarity change after 5 surges.
e) test circuit in combination with 150 V Voltage Dependent Resistor (VDR) and a 3.9
resistor connected in series
with the source of the PMOST interrupter (UBA1702).
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
SDI
, V
SDO
maximum input/output switch driver voltage
(pins SDI or SDO)
DC; note 1
-
240
V
pulsed; note 2
-
400
V
V
EHI
maximum hook switch input voltage (pin EHI)
DC; note 1
-
240
V
pulsed; note 2
-
400
V
V
i(max)
maximum voltage at all logic inputs
(pins DPI, MSI, RV0, RV1, RV2 and RMI)
V
SS
-
0.4
V
DD
+
0.4
V
V
n(max)
maximum voltage at all other pins
-
24
V
I
SPI(max)
maximum speech part input current (pin SPI)
-
150
mA
I
RPI(max)
maximum ringer part input current (pin RPI)
-
70
mA
P
tot
total power dissipation
T
amb
= 75
C
UBA1702
-
1
W
UBA1702T
-
0.625
W
T
stg
IC storage temperature
-
40
+
150
C
T
amb
operating ambient temperature
-
25
+
75
C
SYMBOL
PARAMETER
VALUE
UNIT
R
th j
-
a
thermal resistance from junction to ambient in free air
UBA1702, UBA1702A
45
K/W
UBA1702T, UBA1702AT
70
K/W
1997 Sep 29
11
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
CHARACTERISTICS
Speech part: l
line
= 20 mA; DPI = LOW; T
amb
= 25
C; V
EE
= 0 V; unless otherwise specified.
Ringer part: V
line(rms)
= 45 V; f = 25 Hz; using an RC combination of 2.2 k
and 820 nF and a diode bridge between the
line and the RPI input.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Speech Part
S
WITCH DRIVER AND REFERENCES
(
PINS
SDI, SDO, EHI
AND
DPI); UBA1702
ONLY
I
EE
V
EE
current consumption
V
SPO
= 4.2 V
-
-
330
-
A
V
SDO
switch driver output voltage
V
SDI
< 12 V
-
-
0.2
V
S
WITCH DRIVER AND REFERENCES
(
PINS
SDI, SDO, EHI
AND
DPI); UBA1702A
ONLY
I
EE
V
EE
current consumption; excluding PNP
interrupter base current
V
SDO
= 4.2 V
-
-
510
-
A
R
SDO
resistance between pins SDO and V
EE
-
2.2
-
k
I
SDO(max)
maximum input current (pin SDO)
7.0
-
-
mA
S
WITCH DRIVER AND REFERENCES
(
PINS
SDI, SDO, EHI
AND
DPI); UBA1702
AND
UBA1702A
I
SS
V
SS
current consumption
V
SPO
= 4.2 V; note 1
-
-
280
-
A
V
SDI
-
SDO
internal voltage limitation between
pins SDI and SDO
-
14
-
V
R
SDI-SDO
resistance between pins SDI and SDO
V
SDI
-
V
SDO
< 12 V
-
1.1
-
M
R
SDI
resistance between pins SDI and V
EE
V
SDI
= V
EHI
= 48 V;
DPI = HIGH
-
4
-
M
V
SDI
= V
EHI
= 240 V;
DPI = HIGH
5
20
-
M
R
EHI
resistance between pins EHI and V
EE
V
EHI
= 4.2 V
170
420
-
k
V
EHI
= 48 V
-
740
-
k
V
EHI
= 240 V
-
3.5
-
M
Z
SPO
impedance between pins SPO and V
EE
f = 0.3 to 3.4 kHz
20
-
-
k
Z
VSS
impedance between pins V
SS
and V
EE
f = 0.3 to 3.4 kHz
10
-
-
k
V
IH
HIGH-level input voltage (pin EHI)
V
SS
+ 1.5
-
240
V
V
IL
LOW-level input voltage (pin EHI)
V
SS
-
V
SS
+ 0.3 V
I
IH
HIGH-level input current (pin EHI)
V
EHI
= 4.2 V
0
10
20
A
I
IL
LOW-level input current (pin EHI)
V
EHI
= LOW
-
0
-
A
V
IH
HIGH-level input voltage (pin DPI)
V
SS
+ 1.5
-
V
DD
V
V
IL
LOW-level input voltage (pin DPI)
V
SS
-
V
SS
+ 0.3 V
I
IH
HIGH-level input current (pin DPI)
V
DPI
= HIGH
0
-
10
A
I
IL
LOW-level input current (pin DPI)
V
DPI
= LOW
-
0
-
A
1997 Sep 29
12
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
M
UTE SWITCH AND ZENER PROTECTION
(
PINS
MSI, MSA
AND
ZPA)
V
SPO(M)
adjustable mute voltage referenced to
V
EE
MSI = HIGH;
MSA open-circuit
-
2.7
3
V
MSI = HIGH;
MSA shorted to SPO
-
1.7
-
V
V
SPO(Z)
adjustable zener voltage referenced to
V
EE
MSI = LOW;
ZPA open-circuit
11.0
12.0
13.0
V
MSI = LOW;
ZPA shorted to SPO
8.3
9.0
9.7
V
MSI = LOW;
ZPA shorted to V
EE
16.4
18.0
19.6
V
I
SPI
current capability (pin SPI)
150
-
-
mA
V
IH
HIGH-level input voltage (pin MSI)
0.7V
DD
-
V
DD
V
V
IL
LOW-level input voltage (pin MSI)
V
SS
-
V
SS
+ 0.3 V
I
IH
HIGH-level input current (pin MSI)
V
MSI
= HIGH
0
-
10
A
I
IL
LOW-level input current (pin MSI)
V
MSI
= LOW
-
0
-
A
C
URRENT MANAGEMENT
(
PINS
SPI, SPO, CDA, CLA
AND
CDO)
I
SPI(lim)
current limitation (pin SPI)
CLA open-circuit
-
45
-
mA
CLA shorted to V
EE
-
120
-
mA
I
SPI(det)
current detection (pin SPI)
CDA open-circuit
2
3
4
mA
R
SPI-SPO
series resistance between pins SPI and
SPO
-
2
-
I
OH
HIGH level output current (pin CDO)
V
CDO
= V
DD
-
0.5 V
-
-
-
100
A
I
OL
LOW level output current (pin CDO)
V
CDO
= V
SS
+
0.5 V
100
-
-
A
M
ICROCONTROLLER SUPPLY
(
PINS
V
DD
AND
V
BB
)
V
DD
supply output voltage referenced to V
SS
V
BB
> 3.7 V;
I
DD
=
-
1 mA
3.0
3.3
3.6
V
V
DD
/
T
supply output voltage temperature
gradient
-
-
0.2
-
mV/K
I
DD
supply output current capability
V
BB
> 3.7 V
-
-
-
2
mA
V
BB
-
V
DD
voltage drop between V
BB
and V
DD
I
DD
=
-
1 mA;
2.5 V < V
BB
< 3.0 V
-
100
-
mV
V
DDM
voltage at pin V
DD
when neither speech
nor ringer signal is applied
I
DD
= 9
A
-
1.4
-
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
1997 Sep 29
13
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
Ringer part
P
ROTECTION
(
PIN
RPI)
I
SS
current consumption
RV2 = 0; RV1 = 0;
RV0 = 0
-
-
850
-
A
I
RPI(max)
maximum input current
70
-
-
mA
V
RPI
voltage limit referenced to V
EE
-
21
-
V
V
RPId
voltage limit in DMO or NSA mode
referenced to V
EE
I
RPI
= 30 mA;
MSI = HIGH
-
2.1
-
V
Z
RPI
AC input impedance referenced to V
EE
f = 0.3 to 3.4 kHz;
V
RPI
< 1.5 V (RMS)
100
220
-
k
R
INGER THRESHOLD AND FREQUENCY DETECTION
(
PINS
V
RR
, RTA
AND
RFO)
V
RRth
ringer supply threshold voltage
referenced to V
SS
RTA open-circuit;
-
11
-
V
V
RRhys
ringer threshold hysteresis voltage
-
6.5
-
V
V
RPIhys
ringer frequency detection hysteresis
voltage referenced to V
EE
RFO = HIGH
-
V
RR
-
V
RFO = LOW
-
V
DD
-
V
I
OH
HIGH-level output current (pin RFO)
V
RFO
= V
DD
-
0.5 V
-
-
-
100
A
I
OL
LOW-level output current (pin RFO)
V
RFO
= V
SS
+ 0.5 V
100
-
-
A
V
OLUME CONTROL
(
PINS
RV0, RV1
AND
RV2)
G
gain adjustment range
(RV2, RV1, RV0) from
(0, 0, 0) to (1 ,1, 0);
note 2
-
36
-
dB
G
s
step resolution
(RV2, RV1, RV0) from
(0, 0, 0) to (1, 1, 0);
note 2
-
6
-
dB
G
ls
last step resolution
(RV2, RV1, RV0) from
(1, 1, 0) to (1, 1, 1);
note 3
-
9.5
12
dB
V
IH
HIGH-level input voltage (pins RVx)
0.7V
DD
-
V
DD
V
V
IL
LOW-level input voltage (pins RVx)
V
SS
-
0.3V
DD
V
I
IH
HIGH-level input current (pins RVx)
V
RVx
= HIGH
0
-
5
A
I
IL
LOW-level input current (pins RVx)
V
RVx
= LOW
0
-
5
A
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
1997 Sep 29
14
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
Notes
1. I
SS
has no influence on AGC characteristics of the TEA106x transmission circuit when V
SS
is connected to the
SLPE pin of TEA106x.
2. Independent of V
RR
if greater than 10 V.
3. Without piezo transducer, dependent on V
RR
.
R
INGER MELODY INPUT AND PIEZO DRIVER
(
PINS
RMI, ROA
AND
ROB)
V
IH
HIGH-level input voltage (pin RMI)
0.52V
DD
-
V
DD
V
V
IL
LOW-level input voltage (pin RMI)
V
SS
-
0.48V
DD
V
I
IH
HIGH-level input current (pin RMI)
V
RMI
= HIGH
0
-
10
A
I
IL
LOW-level input current (pin RMI)
V
RMI
= LOW
-
10
-
0
A
V
o(min p-p)
minimum output voltage between pins
ROA and ROB (peak-to-peak value)
RV2 = 0; RV1 = 0;
RV0 = 0
-
0.15
-
V
V
o(p-p)
output voltage between pins ROA and
ROB (peak-to-peak value)
RV2 = 1; RV1 = 1;
RV0 = 0
-
9.6
-
V
V
o(max p-p)
maximum output voltage between pins
ROA and ROB (peak-to-peak value)
RV2 = 1; RV1 = 1;
RV0 = 1
-
28.7
32
V
|I
RO
|
ROA or ROB output current capability
sink and source;
RV2 = 1; RV1 = 1;
RV0 = 1
80
-
-
mA
R
EGULATED MICROCONTROLLER SUPPLY
(
PIN
V
DD
)
V
DD
supply output voltage referenced to V
SS
I
DD
=
-
1 mA
3.0
3.35
3.6
V
V
DD
/
T
supply output voltage temperature
gradient
-
0
-
mV/K
I
DD
supply output current capability
-
-
-
2
mA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
1997 Sep 29
15
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
TEST AND APPLICATION INFORMATION
handbook, full pagewidth
BRIDGE
4 x BAS11
V
line
45 V (RMS)
SPI
SDO
SDI
EHI
ROA
RPI
ROB
RMI
MSI
RV0
RV1
RV2
CLA
CDA
MSA
ZPA
RTA
RF0
CD0
DPI
V
BB
SP0
V
RR
C
VRR
V
BB
V
SPO
V
DD
V
SS
V
EE
22
F
C
VDD
22
F
4.2 V
20
240 V
R
ring
C
ring
R
CDA
R
RTA
80
nF
C
RO
UBA1702
UBA1702A
820 nF
2.2 k
MBE750
Fig.4 Test circuit.
1997 Sep 29
16
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
handbook, full pagewidth
SPI
SDO
SDI
EHI
RPI
ROA
ROB
buzzer
RMI
RVO
RV1
RV2
RFO
CLA
CDA
MSA
ZPA
RTA
CDO
MSI
DPI
MDT
RV0
RV1
RV2
CE
T1
NSA
DP
D1
BAT85
C
VRR
22
F
C
VDD
22
F
R1
620
V
CC
PD
V
EE
SLPE
LN
TEA106X
3.58 MHz
XTAL1
XTAL2
V
DD
V
SS
V
BB
SP0
V
RR
V
DD
V
SS
V
EE
PCD33xx
UBA1702
M1
BSP254
double hook switch
820 nF
C
ring
R
ring
2.2 k
BOD
BR211-240
a/b
b/a
BRIDGE
4 x BAS11
C1
100
F
R9
20
MBE746
R
prot
3.9
Fig.5 Simplified basic application of the UBA1702 with the TEA106x.
1997 Sep 29
17
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
Fig.6 Simplified basic application of the UBA1702 with the TEA1064A.
handbook, full pagewidth
SPI
SDO
SDI
EHI
RPI
ROA
ROB
buzzer
RMI
RV0
RV1
RV2
RF0
CLA
CDA
MSA
ZPA
RTA
CD0
MSI
DPI
MDT
RV0
RV1
RV2
CE
T1
NSA
DP
D1
BAT85
C
VRR
C
VDD
22
F
22
F
R1
620
R16
390
V
CC1
V
CC2
PD
V
EE
SLPE
LN
TEA1064A
3.58 MHz
XTAL1
XTAL2
V
DD
V
SS
V
BB
SP0
V
RR
V
DD
V
SS
V
EE
PCD33xx
UBA1702
M1
BSP254
double hook switch
820 nF
C
ring
R
ring
2.2 k
BOD
BR211-240
a/b
b/a
BRIDGE
4 x BAS11
C1
100
F
C15
220
F
R9
20
MBE747
R
prot
3.9
1997 Sep 29
18
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
Fig.7 Simplified basic application of the UBA1702A with the TEA106x.
handbook, full pagewidth
SPI
SDO
SDI
EHI
RPI
ROA
ROB
buzzer
RMI
RV0
RV1
RV2
RF0
CLA
CDA
MSA
ZPA
RTA
CD0
MSI
DPI
MDT
RV0
RV1
RV2
CE
T1
NSA
DP
D1
BAT85
C
VRR
C
VDD
22
F
22
F
R1
620
V
CC
PD
V
EE
SLPE
LN
TEA106X
3.58 MHz
XTAL1
XTAL2
V
DD
V
SS
V
BB
SP0
V
RR
V
DD
V
SS
V
EE
PCD33xx
UBA1702A
TP1
MPSA92
double hook switch
820 nF
C
ring
R
ring
2.2 k
BOD
BR211-240
a/b
b/a
BRIDGE
4 x BAS11
C1
100
F
R9
20
MBE748
1997
Sep
29
19
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
Fig.8 Simplified proposal for electronic hook switch application of the UBA1702 in combination with a transmission and a hands-free circuit.
handbook, full pagewidth
SPI
SDO
SDI
EHI
RPI
ROA
ROB
buzzer
RMI RV0
RV1
RV2
RF0
CLA CDA MSA ZPA
RTA
CD0
MSI
DPI
EHD MHD EHT
RV0
RV1
RV2
CE
T1
TONE
D1
BAT85
CVRR
22
F
1.8
F
1.8
F
CVDD
22
F
R1
620
VCC
DTMF VEE
SLPE
LN
TEA106x
3.58 MHz
XTAL1
XTAL2
VDD
VSS
VBB
SP0
VRR
VDD
VSS
VEE
PCD33xx
UBA1702
M1
BSP254
C1
100
F
R9
20
QR
Loudspeaking
TEA1093
SUP
RIN
GND
LSP1
LSP2
100
nF
MHD: Mechanical Hook switch Detection
EHD: Electronic Hook switch Detection
EHT: Electronic Hook switch Take-over
CRMI
speaker-phone
button
D2
D3
cradle
BRIDGE
4 x BAS11
BRIDGE
4 x BAS11
a/b
b/a
BOD
BR211-240
D4
2.2 k
D5
3.3 V
MBE749
10 nF
Rprot
3.9
1997 Sep 29
20
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
PACKAGE OUTLINES
UNIT
A
max.
1
2
b
1
(1)
(1)
(1)
c
D
E
w
e
M
H
L
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
mm
inches
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
SOT117-1
92-11-17
95-01-14
A
min.
A
max.
b
Z
max.
M
E
e
1
1.7
1.3
0.53
0.38
0.32
0.23
36.0
35.0
14.1
13.7
3.9
3.4
0.25
2.54
15.24
15.80
15.24
17.15
15.90
1.7
5.1
0.51
4.0
0.066
0.051
0.020
0.014
0.013
0.009
1.41
1.34
0.56
0.54
0.15
0.13
0.01
0.10
0.60
0.62
0.60
0.68
0.63
0.067
0.20
0.020
0.16
051G05
MO-015AH
M
H
c
(e )
1
M
E
A
L
seating plane
A
1
w
M
b
1
e
D
A
2
Z
28
1
15
14
b
E
pin 1 index
0
5
10 mm
scale
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
handbook, full pagewidth
DIP28: plastic dual in-line package; 28 leads (600 mil)
SOT117-1
1997 Sep 29
21
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
UNIT
A
max.
A
1
A
2
A
3
b
p
c
D
(1)
E
(1)
(1)
e
H
E
L
L
p
Q
Z
y
w
v
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
mm
inches
2.65
0.30
0.10
2.45
2.25
0.49
0.36
0.32
0.23
18.1
17.7
7.6
7.4
1.27
10.65
10.00
1.1
1.0
0.9
0.4
8
0
o
o
0.25
0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
1.1
0.4
SOT136-1
X
14
28
w
M
A
A
1
A
2
b
p
D
H
E
L
p
Q
detail X
E
Z
c
L
v
M
A
e
15
1
(A )
3
A
y
0.25
075E06
MS-013AE
pin 1 index
0.10
0.012
0.004
0.096
0.089
0.019
0.014
0.013
0.009
0.71
0.69
0.30
0.29
0.050
1.4
0.055
0.419
0.394
0.043
0.039
0.035
0.016
0.01
0.25
0.01
0.004
0.043
0.016
0.01
0
5
10 mm
scale
SO28: plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1
95-01-24
97-05-22
1997 Sep 29
22
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
"IC Package Databook" (order code 9398 652 90011).
DIP
S
OLDERING BY DIPPING OR BY WAVE
The maximum permissible temperature of the solder is
260
C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T
stg max
). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
R
EPAIRING SOLDERED JOINTS
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300
C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400
C, contact may be up to 5 seconds.
SO
R
EFLOW SOLDERING
Reflow soldering techniques are suitable for all SO
packages.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250
C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45
C.
W
AVE SOLDERING
Wave soldering techniques can be used for all SO
packages if the following conditions are observed:
A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.
The longitudinal axis of the package footprint must be
parallel to the solder flow.
The package footprint must incorporate solder thieves at
the downstream end.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Maximum permissible solder temperature is 260
C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150
C within
6 seconds. Typical dwell time is 4 seconds at 250
C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
R
EPAIRING SOLDERED JOINTS
Fix the component by first soldering two diagonally-
opposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300
C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320
C.
1997 Sep 29
23
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
DEFINITIONS
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification
This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
Internet: http://www.semiconductors.philips.com
Philips Semiconductors a worldwide company
Philips Electronics N.V. 1997
SCA55
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Printed in The Netherlands
417027/1200/03/pp24
Date of release: 1997 Sep 29
Document order number:
9397 750 02514