Maxim Integrated ICL7129ACPL+2 PDIP Display Driver, 7 Segment, 40 Pin, 9 V

±19,999 Count Resolution
10pA Max Input Bias Current (MAX7129)
3μV Peak-to-Peak Noise (ICL7129A)
Onboard Multiplexed LCD Display Driver 4-1/2 Digits, 4 Decimal Points, 3 Annunciators
Instant Continuity Detector
Low Battery Detector and Indicator
Overrange/Underrange Outputs
Precise 10:1 Range Select
10μV Resolution
Significantly Improved ESD Protection
Monolithic, Low Power CMOS Design
Eliminates Need for Compensation Capacitor