MICROCHIP MCP3911A0T-E/SS

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 Error Calibration registers and high-speed 20 MHz SPI compatible serial interface. The MCP3911 ADCs are 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. The communication is largely simplified with the one-byte long commands, including various continuous Read/Write modes that can be accessed by the Direct Memory Access (DMA) of an MCU with a separate Data Ready pin that can be directly connected to an Interrupt Request (IRQ) input of an MCU. The MCP3911 is capable of interfacing a large variety of voltage and current sensors, including shunts, current transformers, Rogowski coils and Hall effect sensors.

• 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/℃
• 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

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