Description
The MCP3911 is a 2.7V to 3.6V dual channel Analog Front End (AFE) containing two synchronous sampling Delta-Sigma Analog-to-Digital Converters (ADC), two PGAs, phase delay compensation block, low-drift internal voltage reference, modulator output block, digital offset and gain errors calibration registers and high-speed 20 MHz SPI compatible serial interface.

Features
• Two Synchronous Sampling 16/24-bit Resolution
   Delta-Sigma A/D Converters
• 94.5 dB SINAD, -106.5 dBc Total Harmonic
   Distortion (THD) (up to 35th harmonic), 111 dB
   SFDR for Each Channel
• 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 Programmable Gain Amplifier (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

Applications
• Energy Metering and Power Measurement
• Automotive
• Portable Instrumentation
• Medical and Power Monitoring
• Audio/Voice Recognition