MCP3912A1-E/SS

MCP3912A1-E/SS is a 3V four-channel Analog Front End (AFE) containing four synchronous sampling DeltaSigma ADC, four PGAs, phase delay compensation block, low-drift internal voltage reference, digital offset and gain error calibration registers, and high-speed 20MHz SPI-compatible serial interface. It is fully configurable, with features, such as 16/24-bit resolution, Oversampling Ratio (OSR) from 32 to 4096, gain from 1x to 32x, independent shutdown and reset, dithering, and autozeroing. A separate data-ready pin is also included that can directly be connected to an Interrupt Request (IRQ) input of an MCU. The MCP3912 includes advanced security features to secure the communications and the configuration settings, such as a CRC-16 checksum on both serial data outputs and static register map configuration. Applications include polyphase energy meters, energy metering and power measurement, automotive, portable instrumentation, medical and power monitoring, and audio/voice recognition.

• Four synchronous sampling 24bit resolution delta-sigma A/D converters
• Enables 0.1% typical active power measurement error over a 10,000:1 dynamic range
• 16bit cyclic redundancy check checksum on all communications for secure data transfers
• 16bit CRC checksum and interrupt alert for register map configuration
• Register map lock with 8-Bit secure key, differential voltage reference input pins
• High-gain PGA on each channel, separate data ready pin for easy synchronization
• Individual 24bit digital offset and gain error correction for each channel
• High-speed 20MHz SPI interface with mode 0,0 and 1,1 compatibility
• Continuous read/write modes for minimum communication time with dedicated 16/32bit modes
• 28-lead SSOP package, extended temperature range from -40°C to +125°C