UTC 7106
CMOS IC
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R502-018,B
ABSOLUTE MAXIMUM RATINGS
(Ta=25)
PARAMETER SYMBOL
RATINGS
UNIT
Supply Voltage (V+ ~ V-)
V
DD
15 V
Analog Input Voltage (Either Input) (Note 1)
V
I,ANG
V+ ~ V-
V
Reference Input Voltage (Either Input)
V
I,REF
V+ ~ V-
V
Operating Temperature Range
T
OP
0 ~ +70
THERMAL INFORMATION
PARAMETER SYMBOL
RATINGS
UNIT
Thermal Resistance (Tyical, Note 2)
DIP-40
QFP-44
JA
50
75
(
C/W)
Maximum Junction Temperature
T
J
150
C
Maximum Storage Temperature Range
T
STG
-65 ~ +150
C
Maximum Lead Temperature (Soldering 10s) (QFP-44 only)
T
LOAD
300
C
Note 1: Input voltages may exceed the supply voltages provided the input current is limited to 100A.
Note 2:
JA
is measured with the component mounted on a low effective thermal conductivity test board in free air.
See Tech Brief TB379 for details.
ELECTRICAL CHARACTERISTICS
(Note 3)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
SYSTEM PERFORMANCE
Zero Input Reading
R
Z
V
IN
=0.0V, Full Scale=200mV
-000.0
000.0 +000.0
Digital
Reading
Ratiometric Reading
R
R
V
IN
=V
REF
, V
REF
=100mV 999
999/1000
1000
Digital
Reading
Rollover Error
E
R
-V
IN
=+V
IN
200mV
Difference in Reading for
Equal Positive and Negative
Inputs Near Full Scale
0.2
1
Counts
Linearity L
Full Scale=200mV or Full
Scale=2V Maximum Devi-
ation from Best Straight Line
Fit (Note 5)
0.2
1
Counts
Common Mode Rejection Ratio
CMRR
V
CM
=1V,V
IN
=0V,
Full Scale=200mV(Note 5)
50
V/V
Noise V
N
V
IN
=0V,Full Scale=200mV
(Peak-To-Peak Value Not
Exceeded 95% of Time)
15
V
Leakage Current Input
I
L
V
IN
=0(Note 5)
1
10
pA
Zero Reading Drift
D
ZR
V
IN
=0, 0 ~ 70 (Note 5)
0.2
1
V/
Scale Factor Temperature
Coefficient
T,S
V
IN
=199mV, 0 ~ 70,
(Ext.Ref.0ppm/) (Note 5)
1
5
ppm/
End Power Supply Character V+
Supply Current
I
EP
V
IN
=0
1.0 1.8 mA
COMMON Pin Analog Common
Voltage V
COM
25k Between Common
and Positive Supply (With
Respect to +Supply)
2.4 3.0 3.2 V
UTC 7106
CMOS IC
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R502-018,B
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
Temperature Coefficient of Analog
Common
T,A
25k Between Common
and Positive Supply (With
Respect to +Supply)
80
ppm/
DISPLAY DRIVER
Peak-To-Peak Segment Drive
Voltage
Peak-To-Peak Backplane Drive
Voltage
V
D,PP
V+ ~ V-=9V(Note 4)
4
5.5
6
V
Note 3: Unless otherwise noted, specifications apply to the UTC 7106 at T
a
=25, f
CLOCK
=48kHz, UTC 7106 is
tested in the circuit of Figure 1.
Note 4: Back plane drive is in phase with segment drive for"off"segment,180 degrees out of phase for"on"
segment .Frequency is 20 times conversion rate. Average DC component is less than 50mV.
Note 5: Not tested, guaranteed by design.
TYPICAL APPLICATIONS AND TEST CIRCUITS
(LCD DISPLAY COMPONENTS SELECTED FOR 200mV FULL SCALE)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
V+
D1
C1
B1
A1
F1
G1
E1
D2
C2
B2
A2
F2
E2
D3
B3
F3
E3
AB4
POL
OSC 1
OSC 2
OSC 3
TEST
RE
F HI
RE
F L
O
C
REF
+
C
REF
-
COM
IN HI
IN LO
A-
Z
BU
FF
INT
V-
G2
C3
A3
G3
BP
UTC 7106
DISPLAY
R3
C4
R1
R4
C1
R5
C5
IN
+ -
C2 R2 C3
DISPLAY
C1=0.1F
C2=0.47F
C3=0.22F
C4=100pF
C5=0.02F
R1=24k
R2=47k
R3=91k
R4=1k
R5=1M
+ -
9V
DESIGN INFORMATION SUMMARY SHEET
*OSCILLATOR FREQUENCY
fosc=0.45/RC
C
OSC
>50pF, R
OSC
>50k
f
OSC
(Typ)=48kHz
*OSCILLATOR PERIOD
t
OSC
=RC/0.45
*INTEGRATION CLOCK FREQUENCY
UTC 7106
CMOS IC
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R502-018,B
f
CLOCK
=f
OSC
/4
*INTEGRATION PERIOD
t
INT
=1000(4/f
OSC
)
*60/50Hz REJECTION CRITERION
t
INT
/t
60Hz
or t
INT
/t
50Hz
=Integer
*OPTIMUM INTEGRATION CURRENT
I
INT
=4A
*FULL SCALE ANALOG INPUT VOLTAGE
V
INFS
(Typ)=200mV or 2V
*INTEGRATE ESISTOR
R
INT
= V
INFS
/ I
INT
*
INTEGRATE CAPACITOR
C
INT
=(t
INT
)(I
INT
)/ V
INT
*INTEGRATOR OUTPUT VOLTAGE SWING
V
INT
=(t
INT
)(I
INT
)/ C
INT
*VINT MAXIMUM SWING
(V- + 0.5V)<V
INT
<(V+ - 0.5V), V
INT
(Typ)=2V
*DISPLAY COUNT
COUNT=1000V
IN
/V
REF
*CONVERSION CYCLE
t
CYC
=t
CLOCK
4000
t
CYC
=t
OSC
16,000
When f
OSC
=48kHz, t
CYC
=333ms
*COMMON MODE INPUT VOLTAGE
(V- + 1V)<V
IN
<(V+ - 0.5V)
*AUTO-ZERO CAPACITOR
0.01F<C
AZ
<1F
*REFERENCE CAPACITOR
0.1F<C
REF
<1F
*V
COM
Biased between Vi and V-
*V
COM
V+ - 2.8V
Regulation lost when V+ to V- <6.8V
If V
COM
is externally pulled down to (V+ to V-)/2, the V
COM
circuit will turn off.
*POWER SUPPLY: SINGLE 9V
V+ - V- =9V
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