Datasheet for ADN8834:
- Manufacturer Part Number : ADN8834
- Manufacturer : AD
- Description : Ultra compact 1.5 A Thermoelectric Cooler (TEC) Controller
- Series : ADN8834
- Reference Price : USD 4
- Our Price : We have a better price, contact us by email
- Product Type : Thermoelectric Cooler Controller
- Function : -
- Current Suggest : Recommended for New Designs
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : ADN8834
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
Contact us to check the best price and real time inventory quantity for ADN8834. If you need any more information about ADN8834, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
- Patented high efficiency single inductor architecture
- Integrated low RDSON MOSFETs for the TEC controller
- 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
- Temperature lock indicator
- Available in a 25-ball, 2.5 mm × 2.5 mm WLCSP or in a 24-lead, 4 mm × 4 mm LFCSP
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
*Product is covered by U.S. Patent No. 6,486,643
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
