Microchip Technology MCP3901A0-I/SS

Description
The MCP3901 is a dual-channel Analog Front End (AFE) that includes:
Two synchronous sampling Delta-Sigma Analog-to-Digital Converters (ADCs)
Two Programmable Gain Amplifiers (PGAs)
Phase delay compensation block
Internal voltage reference
Modulator output block
High-speed, addressable 20 MHz SPI compatible serial interface
The converters utilize a proprietary dithering algorithm for reduced idle tones and improved Total Harmonic Distortion (THD). The internal register map contains 24-bit wide ADC data words, a modulator output byte, and six writable control registers for programming gain, oversampling ratio, phase, resolution, dithering, shutdown, reset, and communication features.
Communication is simplified with Continuous Read modes accessible by Direct Memory Access (DMA) and a separate data ready pin for Interrupt Request (IRQ) input. The MCP3901 can interface with various voltage and current sensors, including shunts, current transformers, Rogowski coils, and Hall-effect sensors.

Features
Two-channel 16/24-bit resolution Delta-Sigma ADCs
91 dB SINAD, -104 dBc THD, 109 dB SFDR for each channel
Programmable data rate up to 64 ksps
Ultra-low-power shutdown mode with <2 μA
-133 dB crosstalk between channels
Low drift internal voltage reference: 12 ppm/°C
Differential voltage reference input pins
High gain PGA on each channel (up to 32 V/V)
Phase delay compensation between channels with 1 μs time resolution
Separate modulator outputs for each channel
High-speed, addressable 20 MHz SPI interface with Mode 0,0 and 1,1 compatibility
Independent analog and digital power supplies: 4.5V-5.5V AVDD, 2.7V-5.5V DVDD
Low-power consumption: 14 mW typical at 5V
Available in 20-lead SSOP and QFN packages
Industrial temperature ranges: -40°C to 85°C (Industrial), -40°C to 125°C (Extended)

Applications
Energy metering and power measurement
Automotive
Portable instrumentation
Medical and power monitoring