Front end, analogue, 4-channel, SSOP-28

The MCP3912 is a 3-V four-channel analogue front end (AFE) containing four synchronous sampling delta-sigma analogue-to-digital converters (ADC), four PGAs, phase delay compensation block, internal voltage reference, digital offset and gain error calibration registers and a high-speed 20-MHz SPI compatible serial interface. The MCP3912 AFE can interface with a variety of voltage and current sensors, including shunts, current transformers, Rogowski coils and Hall effect sensors.

- Four synchronous sampling 24-bit delta-sigma A/D converters
- 93.5 dB SINAD, -107 dBc THD, 112 dBFS SFDR
- Enables 0.1% typical active power measurement error over a 10,000:1 dynamic range
- 2.7 - 3.6 V AVDD, DVDD
- Programmable data rate up to 125 ksps
- Oversampling ratio up to 4096
- Ultra low-power shutdown mode with < 10 µA
- -122 dB crosstalk between the two channels
- Low drift 1.2-V internal voltage reference: 9 ppm/°C
- Differential voltage reference input pins
- High gain PGA on each channel (up to 32 V/V)
- Phase delay compensation with 1-µs time resolution

Technical data:
Measurement error: 0.1%
Voltage drift: 9 V
Supply voltage: 2.7 - 3.6 V