ICL7129 Datasheet, PDF (3/11 Pages) Intersil Corporation – 41/2 Digit LCD, Single-Chip A/D Converter

ICL7129
Absolute Maximum Ratings
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Reference Voltage (REF HI or REF LO). . . . . . . . . . . . . . . . V+ to V-
Input Voltage (Note 1), IN HI or IN LO . . . . . . . . . . . . . . . . . V+ to V-
V_DISP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DGND -0.3V to V+
Digital Input Pins
1, 2, 19, 20, 21, 22, 27, 37, 38, 39, 40 . . . . . . . . . . . . . DGND to V+
Thermal Information
Thermal Resistance (Typical, Note 2)
θ_JA (^oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . 150^oC
Maximum Storage Temperature Range . . . . . . . . . .-65^oC to 150^oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300^oC
(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_JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications V- to V+ = 9V, V_REF = 1.00V, T_A = 25^oC, f_CLK = 120kHz, Unless Otherwise Specified
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
Zero Input Reading
Zero Reading Drift
Ratiometric Reading
Range Change Accuracy
Rollover Error
Linearity Error
V_IN = 0V, 200mV Scale
V_IN = 0V, 0^oC To 70^oC
V_IN = V_REF = 1000mV, RANGE = 2V
V_IN = 0.10000V on Low,
Range ≈ V_IN = 1.0000V on High Range
-V_IN = +V_IN = 199mV
200mV Scale
-0000
-
9996
0.9999
-
-
0000
±0.5
9999
1.0000
1.5
1.0
+0000
-
10000
1.0001
3.0
-
Input Common-Mode Rejection Ratio
Input Common-Mode Voltage Range
V_CM = 1V,V_IN = 0V, 200mV Scale
V_IN = 0V, 200mV Scale
-
110
-
-
(V-) +1.5
-
(V+) -1.0
Noise (Peak-To-Peak Value not Exceeded 95% of Time) V_IN = 0V 200mV Scale
Input Leakage Current
Scale Factor Tempco
V_IN = 0V, Pin 32, 33
EVx^INte=rn1a9l ^9Vm_R^V_EF^{0=oC0pTpom7/0oo}CC
COMMON Voltage
V+ to Pin 28
-
14
-
-
1
10
-
2
7
2.8
3.2
3.5
COMMON Sink Current
∆Common = + 0.1V
-
0.6
-
COMMON Source Current
∆Common = -0.1V
-
10
-
DGND VoItage
V+ to Pin 36, V+ to V- = 9V
4.5
5.3
5.8
DGND Sink Current
∆DGND = +0.5V
-
1.2
-
Supply Voltage Range
V+ to V- (Note 3)
6
9
12
Supply Current Excluding COMMON Current
V+ to V- = 9V
-
1.0
1.5
Clock Frequency
(Note 3)
-
120
360
V_DISP Resistance
Low Battery Flag Activation Voltage
V_DISP to V+
V+ to V-
-
50
-
6.3
7.2
7.7
CONTINUITY Comparator Threshold Voltages
Pull-Down Current
V_OUT Pin 27 = HI
V_OUT Pin 27 = LO
Pins 37, 38, 39
100
200
-
-
200
400
-
2
10
“Weak Output” Current Sink/Source
Pins 20, 21 Sink/Source
-
3/3
-
Pin 27 Sink/Source
-
3/9
-
Pin 22 Source Current
-
40
-
Pin 22 Sink Current
-
3
-
NOTE:
3. Device functionality is guaranteed at the stated Min/Max limits. However, accuracy can degrade under these conditions.
UNITS
Counts
µV/^oC
Counts
Ratio
Counts
Counts
dB
V
µV
pA
ppm/^oC
V
mA
µA
V
mA
V
mA
kHz
kΩ
V
mV
mV
µA
µA
µA
µA
µA
3-33