ADN8833

RECOMMENDED FOR NEW DESIGNS

Ultracompact, 1 A Thermoelectric Cooler (TEC) Driver for Digital Control Systems

Analog Devices ADN8833 Product Info

10 February 2026 7

Features

Patented high efficiency single inductor architecture
Integrated low R_DSON MOSFETs for TEC driver
TEC voltage and current operation monitoring
No external sense resistor required
Programmable maximum TEC voltage
External synchronization

Independent TEC heating and cooling current limit settings
2 MHz PWM switching frequency
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

Part details & applications

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).

APPLICATIONS

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

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