VM2302 is a highly integrated, low-cost and high-precision interface chip specially provided for bridge sensors, which collects, amplifies and calibrates sensor signals. VM2302 integrates low noise instrument amplifier (PGA), low power consumption 24 bits Ʃ-Δ ADC, DSP and 12 bit DAC for digital calibration. VM2302 can also support overvoltage protection function through external JFET. VM2302 supports both I2C/SPI digital output and analog output.

features
• Analog function
– High precision 1X~256X gain variable instrument amplifier
– 24 bit ADC for main signal/temperature measurement
– Support built-in temperature sensor and external temperature sensor
– 12 bit DAC

• Digital functions
– Multiple OSR settings
– Support SPI and I2C interfaces

• Analog output characteristics
– Proportional or absolute voltage output
– Support clamping function
• Other characteristics
– Sensor diagnostic function
– Support JFET based overvoltage protection
– Operating temperature range: - 40 ℃~125 ℃

Application occasions
• Pressure sensor
• Magnetic sensor
• Strain gauges