Features and Benefits

  • Single Supply 3.3V or ±3.3V Operation
  • Built-In Sample-and-Hold
  • Direct 3-Wire Interface to Most MPU Serial Ports and All MPU Parallel Ports
  • 30kHz Maximum Throughput Rate
  • Minimum Guaranteed Supply Voltage: 2.7V
  • Resolution: 12 Bits
  • Fast Conversion Time: 24µs Max Over Temp.
  • Low Supply Current: 1.0mA

Product Details

The LTC1287 is a 3V data acquisition component which contains a serial I/O successive approximation A/D converter. The device specifications are guaranteed at a supply voltage of 2.7V. It uses LTCMOS switched capacitor technology to perform a 12-bit unipolar, A/D conversion. The differential input has an on-chip sample-and- hold on the (+) input.

The serial I/O is designed to communicate without external hardware to most MPU serial ports and all MPU parallel I/O ports allowing data to be transmitted and received over three wires. The low voltage operating capability and the low power consumption of this device make it ideally suited for battery applications. Given the ease of use, small package size and the minimum number of interconnects for I/O, the LTC1287 can be used for remote sensing applications.


  • Battery-Powered Instruments
  • Data Logger
  • Data Acquisition Modules

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.

Product Recommendations

LTC1287 Companion Parts

Recommended µModule Isolator

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.

PCN-PDN Information

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