Energy-Measurement Analog Front End (AFE) MCP3911

The MCP3911 is capable of interfacing a large variety of voltage and current sensors including shunts, current transformers, Rogowski coils and Hall effect sensors.

Features:

• Two Synchronous Sampling 16/24-bit Resolution
  Delta-Sigma A/D Converters
  
• 94.5 dB SINAD, -106.5 dBc Total Harmonic Distortion
  (THD)
  
• 2.7V - 3.6V AVDD, DVDD
  
• Programmable Data Rate up to 125 ksps
  - 4 MHz Maximum Sampling Frequency
  
• Oversampling Ratio up to 4096
  
• Ultra Low Power Shutdown Mode with <2 μA
  
• -122 dB Crosstalk between the Two Channels
  
• Low Drift 1.2V Internal Voltage Reference: 7 ppm/°C
  
• Differential Voltage Reference Input Pins
  
• High Gain PGA on Each Channel (up to 32V/V)
  
• Phase Delay Compensation with 1 μs Time Resolution
  
• Separate Modulator Output Pins for Each Channel
  
• 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
  
• Low Power Consumption (8.9 mW at 3.3V, 5.6 mW at 3.3V in low-power mode, typical)
  
• Available in Small 20-lead QFN and SSOP Packages,
  Pin-to-pin Compatible with MCP3901
  
• Extended Temperature Range: -40°C to +125°C