ICL7136 Datasheet, PDF (3/15 Pages) Maxim Integrated Products – Low Power, 3½ Digit A/D Converter

ICL7136
Absolute Maximum Ratings
Supply Voltage
ICL7136, V+ to V-. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15V
Analog Input Voltage (Either Input) (Note 1) . . . . . . . . . . . . V+ to V-
Reference Input Voltage (Either Input). . . . . . . . . . . . . . . . . V+ to V-
Clock Input
ICL7136 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TEST to V+
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Thermal Information
Thermal Resistance (Typical, Note 2)
PDIP Package* . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
θ_JA (°C/W)
50
75
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150°C
Maximum Storage Temperature Range . . . . . . . . . . .-65^oC to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C
(MQFP - Lead Tips Only)
*Pb-free PDIPs can be used for through hole wave solder
processing only. They are not intended for use in Reflow solder
processing applications.
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 the input current is limited to ±100µA.
2. θ_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 Specifications (Note 3)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
SYSTEM PERFORMANCE
Zero Input Reading
V_IN = 0V, Full Scale = 200mV
-000.0 ±000.0 +000.0 Digital
Reading
Ratiometric Reading
V_lN = V_REF, V_REF = 100mV
999 999/ 1000 Digital
1000
Reading
Rollover Error
-V_IN = +V_lN ≅ 200mV Difference in Reading for Equal Positive
-
and Negative Inputs Near Full Scale
±0.2
±1 Counts
Linearity
Full Scale = 200mV or Full Scale = 2V Maximum
Deviation from Best Straight Line Fit (Note 5)
-
±0.2
±1 Counts
Common Mode Rejection Ratio
Noise
V_CM = ±1V, V_IN = 0V, Full Scale = 200mV (Note 5)
V_IN = 0V, Full Scale = 200mV (Peak-To-Peak Value Not
Exceeded 95% of Time) (Note 5)
-
50
-
µV/V
-
15
-
µV
Leakage Current Input
V_lN = 0V (Note 5)
-
1
10
pA
Zero Reading Drift
V_lN = 0V, 0°C To 70°C (Note 5)
-
0.2
1
µV/°C
Scale Factor Temperature Coefficient
V_IN = 199mV, 0°C To 70°C, (Ext. Ref. 0ppm/×°C) (Note 5)
-
1
5 ppm/°C
COMMON Pin Analog Common Voltage 25kΩ Between Common and Positive Supply (With Respect 2.4
3.0
3.2
V
to + Supply)
Temperature Coefficient of Analog
Common
25kΩ Between Common and Positive Supply (With Respect
-
150
-
ppm/°C
to + Supply) (Note 5)
SUPPLY CURRENT
V+ Supply Current
V_IN = 0 (Does Not Include Common Current) 16kHz
Oscillator (Note 6)
-
70
100
µA
DISPLAY DRIVER
Peak-To-Peak Segment Drive Voltage and V+ to V- = 9V (Note 4)
Peak-To-Peak Backplane Drive Voltage
4
5.5
6
V
NOTES:
3. Unless otherwise noted, specifications apply to the ICL7136 at T_A = 25°C, f_CLOCK = 48kHz. ICL7136 is tested in the circuit of Figure 1.
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.
5. Not tested, guaranteed by design.
6. 48kHz oscillator increases current by 20µA (Typ).
3
FN3086.6
July 21, 2005