ADN8834 Ultra compact 1.5 A Thermoelectric Cooler (TEC) Controller

The ADN8834 is a monolithic TEC controller with an integrated TEC controller. It has a linear power stage, a pulse-width modulation (PWM) power stage, and two zero-drift, rail-to-rail operational amplifiers. The linear controller works with the PWM driver to control the internal power MOSFETs in an H-bridge configuration. By measuring the thermal sensor feedback voltage and using the integrated operational amplifiers as a proportional integral differential (PID) compensator to condition the signal, the ADN8834 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 ADN8834 supports negative temperature coefficient (NTC) thermistors as well as positive temperature coefficient (PTC) resistive temperature detectors (RTD). The target temperature is set as an analog voltage input either from a digital-to-analog converter (DAC) or from an external resistor divider. The temperature control loop of the ADN8834 is stabilized by PID compensation utilizing the built in, zero drift chopper amplifiers. The internal 2.50 V reference voltage provides a 1% accurate output that is used to bias a thermistor temperature sensing bridge as well as a voltage divider network to program the maximum TEC current and voltage limits for both the heating and cooling modes. With the zero drift chopper amplifiers, extremely good long-term temperature stability is maintained via an autonomous analog temperature control loop. 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 limits settings
  • Programmable maximum TEC voltage
  • 2.0 MHz PWM driver switching frequency
  • External synchronization
  • Two integrated zero drift, rail-to-rail chopper amplifiers
  • Capable of NTC or RTD thermal sensors
  • 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
Data Sheets
ADN8834: Ultracompact, 1.5 A Thermoelectric Cooler (TEC) Controller (Rev. A)PDF 1.24 M
User Guides
UG-858: Evaluating the ADN8834 Ultracompact 1.5 A Thermoelectric Cooler (TEC) ControllerPDF 808.61 K
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADN8834ACBZ-R7 Production25 ball WLCSPREEL 1500-40 to 125C05Y
ADN8834ACPZ-R2 Production24 ld LFCSP (4x4mm w/2.60mm EP)REEL 250-40 to 125C5.885.88Y
ADN8834ACPZ-R7 Production24 ld LFCSP (4x4mm w/2.60mm EP)REEL 1500-40 to 125C05Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
ADN8834CB-EVALZEvaluation Board100Y
ADN8834CP-EVALZEvaluation Board100Y
ADN8834MB-EVALZEvaluation Board150Y
Reference Materials
ADN8834: Ultracompact, 1.5 A Thermoelectric Cooler (TEC) Controller (Rev. A) adn8834
UG-858: Evaluating the ADN8834 Ultracompact 1.5 A Thermoelectric Cooler (TEC) Controller adn8834
电信系统中的TEC控制器应用 adn8833