ICL7129
Absolute Maximum Ratings
Thermal Information
o
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Thermal Resistance (Typical, Note 2)
θJA ( C/W)
Reference Voltage (REF HI or REF LO). . . . . . . . . . . . . . . . V+ to V-
Input Voltage (Note 1), IN HI or IN LO . . . . . . . . . . . . . . . . . V+ to V-
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50
80
o
V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DGND -0.3V to V+
DISP
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . 150 C
o
o
Digital Input Pins
1, 2, 19, 20, 21, 22, 27, 37, 38, 39, 40 . . . . . . . . . . . . .DGND to V+
Maximum Storage Temperature Range . . . . . . . . . .-65 C to 150 C
o
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300 C
(MQFP - Lead Tips Only)
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Input voltages may exceed the supply voltages provided that input current is limited to 1400mA. Currents above this value may result in
valid display readings but will not destroy the device if limited to ±1mA.
2. θ is measured with the component mounted on an evaluation PC board in free air.
JA
o
Electrical Specifications V- to V+ = 9V, V
= 1.00V, T = 25 C, f
= 120kHz, Unless Otherwise Specified
CLK
REF
A
PARAMETER
Zero Input Reading
TEST CONDITIONS
= 0V, 200mV Scale
MIN
-0000
-
TYP
0000
±0.5
MAX
+0000
-
UNITS
V
Counts
IN
IN
IN
IN
o
o
o
Zero Reading Drift
V
V
V
= 0V, 0 C To 70 C
= V = 1000mV, RANGE = 2V
µV/ C
Ratiometric Reading
9996
0.9999
9999
1.0000
10000
1.0001
Counts
Ratio
REF
= 0.10000V on Low,
Range Change Accuracy
Range ≈ V = 1.0000V on High Range
IN
Rollover Error
-V = +V = 199mV
IN IN
-
-
-
-
1.5
1.0
3.0
Counts
Counts
dB
Linearity Error
200mV Scale
-
-
-
Input Common-Mode Rejection Ratio
Input Common-Mode Voltage Range
V
= 1V,V = 0V, 200mV Scale
IN
110
CM
V
= 0V, 200mV Scale
(V-) +1.5
(V+) -1.0
V
IN
Noise (Peak-To-Peak Value not Exceeded 95% of Time) V = 0V 200mV Scale
IN
-
-
-
14
1
-
µV
Input Leakage Current
Scale Factor Tempco
V
= 0V, Pin 32, 33
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10
7
pA
IN
o
o
V
= 199mV 0 C To 70 C
2
ppm/ C
IN
o
External V
REF
= 0ppm/ C
COMMON Voltage
V+ to Pin 28
2.8
3.2
0.6
10
3.5
V
mA
µA
V
COMMON Sink Current
COMMON Source Current
DGND VoItage
∆Common = + 0.1V
∆Common = -0.1V
V+ to Pin 36, V+ to V- = 9V
∆DGND = +0.5V
V+ to V- (Note 3)
V+ to V- = 9V
-
-
-
-
4.5
5.3
1.2
9
5.8
-
DGND Sink Current
-
mA
V
Supply Voltage Range
Supply Current Excluding COMMON Current
Clock Frequency
6
12
1.5
360
-
-
1.0
120
50
mA
kHz
kΩ
V
(Note 3)
-
V
Resistance
V
to V+
-
DISP
DISP
Low Battery Flag Activation Voltage
V+ to V-
6.3
7.2
200
200
2
7.7
-
CONTINUITY Comparator Threshold Voltages
V
Pin 27 = HI
Pin 27 = LO
100
mV
mV
µA
µA
µA
µA
µA
OUT
V
-
-
-
-
-
-
400
10
-
OUT
Pull-Down Current
Pins 37, 38, 39
“Weak Output” Current Sink/Source
Pins 20, 21 Sink/Source
Pin 27 Sink/Source
3/3
3/9
40
-
Pin 22 Source Current
Pin 22 Sink Current
NOTE:
-
3
-
3. Device functionality is guaranteed at the stated Min/Max limits. However, accuracy can degrade under these conditions.
3-33