ADN8833ACPZ-R7
数据手册.pdfControl 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