ADN8833ACPZ-R7

Control Unit 24Pin LFCSP EP T/R

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.

**Applications**

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TEC temperature control

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Optical modules

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Optical fiber amplifiers

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Optical networking systems

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Instruments requiring TEC temperature control

### Features and Benefits

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Patented high efficiency single inductor architecture

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Integrated low RDSON MOSFETs for TEC driver

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TEC voltage and current operation monitoring

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No external sense resistor required

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Independent TEC heating and cooling current limit settings

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Programmable maximum TEC voltage

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2 MHz PWM switching frequency

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External synchronization 

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Digital thermal control loop compatible

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2.50 V reference output with 1% accuracy

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Available in a 25-ball, 2.5 mm x 2.5 mm WLCSP or in a 24-lead, 4 mm x 4 mm LFCSP