Description:
   The MCP3919 is a 3V three-channel Analog Front End (AFE) containing three synchronous sampling deltasigma Analog-to-Digital Converters (ADC), three PGAs, phase delay compensation block, low-drift internal voltage reference, digital offset and gain error calibration registers and high-speed 20 MHz SPI-compatible serial interface.

FEATUREs:
• Three Synchronous Sampling 24-bit Resolution
   Delta-Sigma A/D Converters
• 93.5 dB SINAD, -107 dBc Total Harmonic
   Distortion (THD) (up to 35th Harmonic), 112 dBFS
   SFDR for Each Channel
• Enables 0.1% Typical Active Power Measurement
   Error over a 10,000:1 Dynamic Range
• Advanced Security Features:
   - 16-bit Cyclic Redundancy Check (CRC)
   Checksum on All Communications for Secure
   Data Transfers
   - 16-bit CRC Checksum and Interrupt Alert for
   Register Map Configuration
   - Register Map Lock with 8-bit Secure Key
• 2.7V-3.6V AVDD, DVDD
• Programmable Data Rate up to 125 ksps:
   - 4 MHz Maximum Sampling Frequency
   - 16 MHz Maximum Master Clock
• Oversampling Ratio up to 4096
• Ultra-Low Power Shutdown Mode with < 10 µA
• -122 dB Crosstalk between Channels
• Low Drift 1.2V Internal Voltage Reference:
   9 ppm/°C
• Differential Voltage Reference Input Pins
• High Gain PGA on Each Channel (up to 32 V/V)
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APPLICATIONs:
• Polyphase Energy Meters
• Energy Metering and Power Measurement
• Automotive
• Portable Instrumentation
• Medical and Power Monitoring
• Audio/Voice Recognition