MCP3918 Datasheet Text
MCP3918
3V Single-Channel Analog Front End
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
- 16 MHz Maximum Master Clock
- Oversampling Ratio, Up to 4096
- Ultra Low-Power Shutdown Mode with < 10 µA
- Low-Drift 1.2V Internal Voltage Reference: 9 ppm/°C
- Differential Voltage Reference Input Pins
- High-Gain Programmable Gain Amplifier (PGA) (up to 32 V/V)
- Phase Delay pensation with 1 µs Time Resolution
- Separate Data Ready Pin for Easy Synchronization
- Individual 24-Bit Digital Offset and Gain Error Correction
- High-Speed 20 MHz SPI Interface with Mode 0,0 and 1,1 patibility
- Continuous Read/Write Modes for Minimum munication with Dedicated 16-/32-Bit Modes
- Available in 20-Lead QFN and SSOP Packages
- Extended Temperature Range: -40°C to +125°C (all specifications are valid down to -45°C)
Description:
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....