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  4. ICL7109


Features and Benefits

  • Improved 2nd Source!
  • Zero Integrator Phase for Fast Overload Recovery
  • Hysteresis and "Crosstalk" Eliminated
  • Enhanced Bus Driving Capability
  • Byte Organized Three-state Outputs
  • UART Handshake Mode for Serial Interfacing
  • True Differential Input and Reference
  • Up to 30 Conversions per Second
  • Significantly Improved ESD Protection
  • Monolithic, Low Power CMOS Design

Product Details

The ICL7109 is a monolithic 12 bit A/D converter designed for easy interface with microprocessors and UARTs. The 12 bit binary plus polarity and over-range outputs can be directly interfaced to a microprocessor bus. In this mode the ICL7109 is controlled by the microprocessor through the chip select and tow byte enable inputs. For remote data logging applications the ICL7109 outputs are easily converted to a UART handshake mode, working with industry standard UARTs to provide serial data transmission.

This device offers high accuracy by lowering rollover error to less than 1 count and zero reading drift to less than 1μV/ °C. In many data acquisition systems the ICL7109 is an attractive, low cost, one-per-channel alternative to analog multiplexing due to its low power consumption and input bias current.

Maxim has added a zero-integrator phase to the ICL7109, eliminating overrange hangover, "crosstalk" and hysteresis effects. Maxim has also increased the current sourcing capabilities of the ICL7109, enabling it to rapidly drive the large capacitances often found on microprocessor busses.


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Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
ICL7109CPL+ Material Declaration Reliability Data Plastic Dual-In-Line, Wide (0.6in)
ICL7109CPL+2 Material Declaration Reliability Data Plastic Dual-In-Line, Wide (0.6in)
ICL7109CQH+D Material Declaration Reliability Data Plastic Leaded Chip Carrier
ICL7109CQH+TD Material Declaration Reliability Data Plastic Leaded Chip Carrier
ICL7109EPL+ Material Declaration Reliability Data Plastic Dual-In-Line, Wide (0.6in)
ICL7109EQH+D Material Declaration Reliability Data Plastic Leaded Chip Carrier
ICL7109EQH+TD Material Declaration Reliability Data Plastic Leaded Chip Carrier
ICL7109IPL+ Material Declaration Reliability Data Plastic Dual-In-Line, Wide (0.6in)
Wafer Fabrication Data

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Buy Now Pricing

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List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

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