The Intersil ICL7136 is a high performance, low power 31/2 digit, A/D converter. Included are seven segment decoders, display drivers, a reference, and a clock. The ICL7136 is designed to interface with a liquid crystal display (LCD) and includes a multiplexed backplane drive. The ICL7136 brings together a combination of high accuracy, versatility, and true economy. It features auto-zero to less than 10µV, zero drift of less than 1µV/oC, input bias current of 10pA (Max), and rollover error of less than one count. True differential inputs and reference are useful in all systems, but give the designer an uncommon advantage when measuring load cells, strain gauges and other bridge type transducers. Finally, the true economy of single power supply operation, enables a high performance panel meter to be built with the addition of only 10 passive components and a display. The ICL7136 is an improved version of the ICL7126, eliminating the overrange hangover and hysteresis effects, and should be used in its place in all applications. It can also be used as a plug-in replacement for the ICL7106 in a wide variety of applications, changing only the passive components.


  • First Reading Overrange Recovery in One Conversion Period
  • Guaranteed Zero Reading for 0V Input on All Scales
  • True Polarity at Zero for Precise Null Detection
  • 1pA Typical Input Current
  • True Differential Input and Reference, Direct Display Drive
  • LCD ICL7136
  • Low Noise - Less Than 15µVP-P
  • On Chip Clock and Reference
  • No Additional Active Circuits Required
  • Low Power - Less Than 1mW
  • Surface Mount Package Available
  • Drop-In Replacement for ICL7126, No Changes Needed
  • Pb-Free Plus Anneal Available (RoHS Compliant)

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active MQFP Tray 96
Active MQFP Reel 500
Active PDIP Tube 99


Title language Type Format File Size Date
Datasheets & Errata
ICL7136 Datasheet Datasheet PDF 850 KB
Application Notes & White Papers
AN017: The Integrating A/D Converter (ICL7135) Application Note PDF 374 KB
AN9675: A Tutorial in Coherent and Windowed Sampling with A/D Converters Application Note PDF 503 KB
AN046: Building a Battery Operated Auto Ranging DVM with the ICL7106 Application Note PDF 523 KB
AN052: Tips for Using Single Chip 3 1/2 Digit A/D Converters Application Note PDF 471 KB
AN023: Low Cost Digital Panel Meter Designs and Complete Instructions for LCD and LED Kits Application Note PDF 529 KB
AN002: Principles of Data Acquisition and Conversion Application Note PDF 1.08 MB
AN9510: Basic Analog for Digital Designers Application Note PDF 508 KB
AN9609: Overcoming Common Mode Range Issues When Using Intersil Integrating Converters Application Note PDF 299 KB
AN9705: A Theoretical View of Coherent Sampling Application Note PDF 287 KB
Analog ICs Brochure 日本語 Brochure PDF 4.20 MB
PA14042 - Minimum Line Quantity Change Product Advisory PDF 363 KB