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