TM200 Description

The TM200 is a fully integrated programmable thermal management unit that monitors, controls, and corrects analog circuitry across a wide temperature range. The TM200 is primarily intended for OCXO applications and includes a temperature sensor, internal Pierce oscillator & output stage, thermal controller, internal heater and data converters combined with a microcontroller (MCU) and memory structures. The TM200 controls and regulates the temperature environment of small enclosures by executing temperature stability and correction programs. The Pierce oscillator and output stage are designed to be flexible with a variety of oscillator and crystal configurations. The TM200 includes many programmable functionality options, and its software package makes it easy to configure and implement various crystal correction algorithms. It communicates via an I2C interface and is available in a 3mm x 3mm package or as die.

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Block Diagram



  • Low phase noise oscillator
  • Low Allan deviation for high stability clocks
  • High accuracy temperature sensor
  • Controls internal (1W) or external heaters
  • Accepts external thermistor elements


  • OCXO Modules
  • Thermal Imaging
  • Environmental Control Systems
  • Precision Measurement


TM200 Evaluation Board Kit – EB-TMx00

OCXO Application

Reference Designs

Order Numbers

Order NumberPackageQuantity / FormRoHSMSL RatingLeadframe
TM200-T120L STSLP QFN123 / TubeYes1NiPdAu
TM200-R120L STSLP QFN1000 / 7" ReelYes1NiPdAu