ICL7116

3 1/2 Digit ADCs with Display Hold


Please check latest availability status for a specific part variant.

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.

ICL7116, ICL7117: Typical Operating Circuit ICL7116, ICL7117: Typical Operating Circuit Enlarge+

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
Part NumberResolution
(±Counts)
Data BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Bipolar VIN
(±V)
Package/PinsBudgetary
Price
nominalminmaxmaxSee Notes
ICL7116 20007-SegmentDiff. Only2.8-93.5
PDIP/40
PLCC/44
$6.09 @1k
ICL7117 -55
MQFP/44
PDIP/40
PLCC/44
$7.92 @500
See All Display-Oriented ADCs (28)
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.

Technical Documents

Tutorial 2102 Delta-Sigma ADCs Replace Integrating ADCs for Panel Meters
Tutorial 1041 Understanding Integrating ADCs

Quality and Environmental Data

Request Reliability Report for: ICL7116 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • ICL7116CJL
  • ICL7116CPL
  • ICL7116CPL+
  • ICL7116CPL+3
  • ICL7116CPL-3
  • ICL7116CQH+D
  • ICL7116CQH+TD
  • ICL7116CQH-D
  • ICL7116CQH-TD
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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