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TMP7 IC Thermometer IC with Seven Segment and Serial Outputs.

General Description

The TMP7 is thermometer IC with seven segment outputs for non multiplexed displays. An inexpensive thermister is used as the temperature sensor. The IC supports 4 scales: degrees C, degrees F, percentage, and raw A/D output. Serial output is also provided for RS-232, USB, or Ethernet operation. The chip provides output polarity control.


  • Degrees C, Degrees F, percentage and raw data outputs.
  • Can drive seven segment displays and serial devices.
  • Minimum and maximum temperatures.
  • Percentage scale.
  • 12 bit A/D converter.
  • Few external parts required.
  • Low power consumption 20 mA typical.
  • Supply voltage 3.3 to 5.25 volts.
  • All timing internally generated.
  • On chip input resistors.
  • TTL and CMOS compatible outputs.
  • Part is in full production.
  • SOIC and DIP 28 Pin Package.
  • Low EMI.
  • ROHS Compliant.

Example Circuit - Stand Alone Thermometer

Example Circuit - Ethernet Thermometer

Example Circuit - USB Thermometer

Example Circuit - RS-232 Thermometer

Example Circuit - Percentage Display

Spec sheet: TMP7 IC Thermometer IC with seven segment and serial outputs

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