Datasheet

This device conforms to the Absolute Maximum Ratings on adjacent page.
● Guaranteed Overload Recovery Time
● Signicantly Improved ESD Protection (Note 8)
● Low Noise
● Key Parameters Guaranteed Over Temperature
● Negligible Hysteresis
● Maxim Quality and Reliability
● Increased Maximum Rating for Input Current (Note 9)
Note 3: Unless otherwise noted, specifications apply to both the ICL7116 and ICL7117 at T
A
= +25°C, f
CLOCK
= 48kHz. ICL7116 is
tested in the circuit of Figure 1. ICL7117 is tested in the circuit of Figure 2.
Note 4: Refer to “Differential input” discussion (see Maxim’s ICL7106/ICL7107 data sheet).
Note 5: Backplane drive is in phase with segment drive for ‘off’ segment, 180º out of phase for on segment. Frequency is 20 times
the conversion rate. Average DC component is less than 50mV.
Note 6: The ICL7116 logic input has an internal pulldown resistor connected from HLDR, pin 1, to TEST, pin 37. The ICL7117 logic
input has an internal pulldown resistor connected from HLDR. Pin 1, to GROUND, pin 21.
(Specifications below satisfy or exceed all ‘tested’ parameters on adjacent page V+ = 9V, T
A
= +25ºC, f
CLOCK
= 48kHz; test circuit =
Figure 1 (ICL7116), Figure 2 (ICL7117), unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Zero Input Reading
V
IN
= 0V
Full Scale = 200.00mV
T
A
= +25°C (Note 7)
-000.0 ±000.0 +000.0
Digital
Reading
0°C ≤ T
A
≤ +70°C (Note 11) -000.0 ±000.0 +000.0
Ratiometric Reading
V
IN
= V
REF
= 100mV
T
A
= +25°C (Note 7)
999
999/
1000
1000
Digital
Reading
0°C ≤ T
A
≤ +70°C (Note 11) 999
999/
1000
1001
Rollover Error (Difference in Reading for
Equal Positive and Negative Reading Near
Full Scale)
-V
IN
= +V
IN
= 200mV
T
A
= +25°C (Note 7)
-1 ±0.2 +1
Counts
0°C ≤ T
A
≤ +70°C (Note 11) ±0.2
Linearity (Max. Deviation from Best Straight
Line Fit)
Full Scale = 200mV
or Full Scale = 2.00mV
-1 ±0.2 +1 Counts
PARAMETER CONDITIONS MIN TYP MAX
V
IL
, Pin 1 (ICL7117 Only) GND +1.5 V
V
IH
, Pin 1 (Both) V+ - 1.5 V
ICL7116 Only (Note 5)
Pk-Pk Segment Drive Voltage,
Pk-Pk Backplane Drive Voltage
V
+
to V
-
= 9V
4 5 6
V
4 5 6
ICL7117 Only (Except Pin 19) Segment
Sinking Current
V+ = 5.0V
Segment Voltage = 3V
5 8.0
mA
(Pin 19 Only) 10 16
ICL7116/ICL7117 3½ Digit ADCs with Display Hold
www.maximintegrated.com
Maxim Integrated │ 3
Absolute Maximum Ratings
Electrical Characteristics (continued)
(Note 3)
Maxim Advantages
Electrical Characteristics