MAX1978
Key Features
- Selectable 500kHz/1MHz switching frequency and a unique ripple-cancellation scheme optimize ponent size and efficiency while reducing noise
- Switching speeds of internal MOSFETs are optimized to reduce noise and EMI
- An ultralow-drift chopper amplifier maintains ±0.001°C temperature stability
- Output current, rather than voltage, is directly controlled to eliminate current surges
- Individual heating and cooling current and voltage limits provide the highest level of TEC protection
- True bipolar operation controls temperature without “dead zones” or other nonlinearities at low load currents
- An analog control signal precisely sets the TEC current
- The MAX1979 provides unipolar output up to 6A
- The instrumentation amplifier can interface to an external NTC or PTC thermistor, thermocouple, or semiconductor temperature sensor
- Analog outputs are provided to monitor TEC temperature and current
