MCP3918 Overview
The MCP3918 is a 3V single-channel Analog Front End (AFE), containing one Delta-Sigma Analog-to-Digital Converter (ADC), one Programmable Gain Amplifier (PGA), phase delay pensation block, low-drift internal voltage reference, digital offset and Gain Error Calibration registers, and high-speed 20 MHz SPI patible serial interface. The MCP3918 ADC is fully configurable.
MCP3918 Key Features
- One 24-Bit Resolution Delta-Sigma A/D Converter
- 93.5 dB SINAD, -107 dBc Total Harmonic Distortion (THD) (up to 35th harmonic), 112 dB Spurious-Free Dynamic Range (SFDR)
- Flexible Serial Interface that Includes Both SPI and a Simple Two-Wire Interface Ideal for Polyphase Shunt Energy Meters
- Advanced Security Features
- 16-Bit Cyclic Redundancy Check (CRC) Checksum on All munications 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