MCP3421 Description
The MCP3421 is a single channel low-noise, high accuracy ΔΣ A/D converter with differential inputs and up to 18 bits of resolution in a small SOT-23-6 package. The on-board precision 2.048V reference voltage enables an input range of ±2.048V differentially (Δ voltage = 4.096V). The device uses a two-wire I2C patible serial interface and operates from a single 2.7V to 5.5V power supply.
MCP3421 Key Features
- 18-bit ΔΣ ADC in a SOT-23-6 package
- Differential input operation
- Self calibration of Internal Offset and Gain per each conversion
- On-board Voltage Reference
- Accuracy: 2.048V ± 0.05%
- Drift: 5 ppm/°C
- On-board Programmable Gain Amplifier (PGA)
- Gains of 1,2,4 or 8
- On-board Oscillator
- INL: 10 ppm of FSR (FSR = 4.096V/PGA)