ICL7116, ICL7117

3 1/2 Digit ADCs with Display Hold

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Status Explanations for product status codes

Active: In Production.

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.
Versatility and accuracy are inherent features of these converters. The dual-slope conversion technique automatically rejects interference signals common in industrial environments. The true differential input is particularly useful when making ratiometric measurements (ohms or bridge transducers). Maxim has added a zero-integrator phase to the ICL7116 and ICL7117, eliminating overrange hangover and hysteresis effects. Finally, these devices offer high accuracy by lowering rollover error to less than one count and zero reading drift to less than 1µV/°C.

Data Sheet

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Key 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/Uses

  • Conductance
  • Current
  • Material Thickness
  • Pressure
  • Resistance
  • Speed
  • Temperature
  • Voltage
   

Key Specifications:

Display-Oriented ADCs
Part Number Resolution
(±Counts)
Data Bus Diff/S.E. Input Internal VREF
(V)
External VREF
(V)
External VREF
(V)
Bipolar VIN
(±V)
Budgetary
Price
nominal min max max See Notes
ICL7116  2000 7-Segment Diff. Only 2.8 - 9 3.5 $6.09 @1k
ICL7117  -5 5 $7.92 @500
See All Display-Oriented ADCs (33)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.



Diagram

ICL7116, ICL7117: Typical Operating Circuit
Typical Operating Circuit

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Overview

 

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Ordering Info

 

Related Products

 
Description
Key Features
Applications/Uses
Key Specifications
Diagram
Notes and Comments
  Data Sheet
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Document Ref.: 19-0949 Rev 1; 2013-10-24
This page last modified: 2013-10-24