Microchip Technology MCP3912A1-E/MQ

Description
Four-channel Analog Front End (AFE)
Four synchronous sampling 24-bit resolution Delta-Sigma A/D Converters
93.5 dB SINAD, -107 dBc Total Harmonic Distortion (THD), 112 dB FSSFDR 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-DVOD
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)
Phase delay compensation with 1 us time resolution
Separate data ready pin for easy synchronization
Individual 24-bit digital offset and gain error correction for each channel
High-speed 20 MHz SPI interface with Mode 0,0 and 1,1 compatibility
Continuous Read/Write modes for minimum communication time with dedicated 16/32-bit modes
Available in 28-lead QFN and 28-lead SSOP packages
Extended temperature range: -40°C to 125°C

Features
Four-channel Analog Front End (AFE)
Four synchronous sampling 24-bit resolution Delta-Sigma A/D Converters
93.5 dB SINAD, -107 dBc Total Harmonic Distortion (THD), 112 dB FSSFDR 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-DVOD
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)
Phase delay compensation with 1 us time resolution
Separate data ready pin for easy synchronization
Individual 24-bit digital offset and gain error correction for each channel
High-speed 20 MHz SPI interface with Mode 0,0 and 1,1 compatibility
Continuous Read/Write modes for minimum communication time with dedicated 16/32-bit modes
Available in 28-lead QFN and 28-lead SSOP packages
Extended temperature range: -40°C to 125°C

Applications
Polyphase energy meters
Energy metering and power measurement
Automotive
Portable instrumentation
Medical and power monitoring
Audio/voice recognition