Overview

Features and Benefits

  • Patented high efficiency single inductor architecture
  • Integrated low RDSON MOSFETs for TEC driver
  • TEC voltage and current operation monitoring
  • No external sense resistor required
  • Independent TEC heating and cooling current limit settings
  • Programmable maximum TEC voltage
  • 2 MHz PWM switching frequency
  • External synchronization 
  • Digital thermal control loop compatible
  • 2.50 V reference output with 1% accuracy
  • Available in a 25-ball, 2.5 mm x 2.5 mm WLCSP or in a 24-lead, 4 mm x 4 mm LFCSP


Product Details

The ADN8833 is a monolithic H-bridge TEC driver with integrat-ed 1 A power MOSFETs. It has a linear power stage with the linear driver (LDR) output and a pulse-width modulation (PWM) power stage with the SW output. Depending on the control voltage at the CONT input, the ADN8833 drives current through a TEC to settle the temperature of a laser diode or a passive component attached to the TEC module to the programmed target temperature.

The control voltage applied to the CONT input is generated by a digital-to-analog converter (DAC) closing the digital proportional, integral, derivative (PID) loop of temperature control system.

The internal 2.5 V reference voltage provides a 1% accurate output that is used to bias a voltage divider network to program the maximum TEC current and voltage limits for both the heating and cooling modes. It can also be a reference voltage for the DAC and the temperature sensing circuit, including a thermistor bridge and an analog-to-digital converter (ADC).

*Product is covered by U.S. Patent No. 6,486,643


Applications
  • TEC temperature control
  • Optical modules
  • Optical fiber amplifiers
  • Optical networking systems
  • Instruments requiring TEC temperature control

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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Evaluation Boards Pricing displayed is based on 1-piece.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.