General Description
The Maxim ICL7116 and ICL7117 are 3½ digit monolithic analog-to-digital converters. They differ from the Maxim ICL7106 and ICL7107 in that the ICL7116 and ICL7117 have a Hold pin, which makes it possible to hold or “freeze” a reading. These integrating ADCs have very high input impedances and directly drive LCD (ICL7116) and LED (ICL7117) displays.

Features
● Improved 2nd Source!
● Hold Pin Allows Indefinite Display Hold
● Guaranteed First Reading Recovery from Overrange
● On-Board Display Drive Capability—No External Circuitry Required: LCD (ICL7116), LED (ICL7117)
● High-Impedance CMOS Differential Inputs
● Low Noise (< 15µVP-P) Without Hysteresis or Overrange Hangover
● Clock and Reference On-Chip
● Zero Input Gives Zero Reading
● True Polarity Indication for Precision Null Applications

Applications
These devices can be used in a wide range of digital panel meter applications. Most applications, however, involve the measurement and display of analog data:
● Pressure
● Voltage
● Resistance
● Temperature
● Conductance
● Current
● Speed
● Material Thickness