3.3V双通道模拟前端MCP3911数据表

　　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. The MCP3911 ADCs are fully configurable with features such as： 16/24-bit resolution， OSR from 32 to 4096， gain from 1x to 32x， independent shutdown and reset， dithering and auto-zeroing. 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.