UTC TA31001 LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO. LTD
1
QW-R108-003,A
TELEPHONE TONE RINGER
DESCRIPTION
The UTC TA31001 is a bipolar integrated circuit
designed for telephone bell replacement. It can also be
used as alarms or other alerting devices.
FEATURES
*Designed for telephone bell replacement.
*Low current drain for multiple extension of lines.
*Adjustable 2-frequency tone.
*Adjustable warbling rate.
*Built-in hysteresis prevents false triggering and
rotary dial 'CHIRPS'.
*Programmable for initiation voltage by simple
external resistor.
DIP-8
BLOCK DIAGRAM
LOW
OSC
HIGH
OSC
AMP
POWER SUPPLY (WITH HYSTERESIS)
8
6
7
4
3
1
5
2
OUTPUT
R3
R2
C3
C2
Note:R2,R3,C2 and C3 are parts externally mounted
UTC TA31001 LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO. LTD
2
QW-R108-003,A
ABSOLUTE MAXIMUM RATINGS
(Ta=25
C )
PARAMETER
SYMBOL
VALUE
UNIT
Supply Voltage
Vcc
30
V
Power Dissipation
Pd
400
mW
Operating Temperature
Topr
-45 to 85
C
Storage Temperature
Tstg
-65 to 150
C
ELECTRICAL CHARACTERISTICS
( Ta=25
C )
(All voltage referenced to GND unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Operating Supply Voltage
Vcc
29
V
Initiation Supply Voltage (note 1) Vsi
See Fig.2
17
19
21
V
Initiation Supply Current (note 1) Isi
6.8K-Pin 2 to GND
1.4
3.5
4.2
mA
Sustaining Voltage (note 2)
Vsus
See Fig.2
9.7
11
12
V
Sustaining Current (note 2)
Isus
No Load Vcc=Vsus,See Fig.2
0.7
1.4
2.5
mA
Output Voltage High
VOH
Vcc=21V, I8=-15mA
Pin6=6V, Pin7=GND
17.0
19
21
V
Output Voltage Low
VOL
Vcc=21V, I8=15mA
Pin6=GND, Pin7=6V
1.6
V
I
IN
(Pin 3)
I
IN
(Pin 7)
Pin3=6V, Pin4=GND
Pin7=6V, Pin6=GND
-
-
-
-
500
500
nA
nA
High Frequency 1
FH1
R3=191K, C3=6800pF
461
512
563
Hz
High Frequency 2
FH2
R3=191K, C3=6800pF
576
640
704
Hz
Low Frequency
FL
R2=165K, C2=0.47
F
9
10
11
Hz
*NOTE (See electrical characteristics sheet)
1. Initiation supply voltage (Vsi) is the supply voltage required to start the tone ringer oscillating.
2. Sustaining voltage (Vsus) is the supply voltage required to maintain oscillation.
C:R
SL
=13K
B:R
SL
=6.8K
A:R
SL
=5K
34
30
26
22
18
14
10
6
2
34
30
26
22
18
14
10
6
2
Vcc(V),Supply voltage
34
30
26
22
18
14
10
6
2
34
30
26
22
18
14
10
6
2
Vcc(V),Supply voltage
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Icc(mA),Supply Current
0.5
1.5
2.5
3.5
4.5
5.5
6.5
7.5
8.5
Supply Current (mA)
Circuit Current-Supply Voltage
(No Load)
Supply Current Vs. Supply Voltage
(No Load)
Fig. 1
Fig. 2
PDF 
ZIP