MCP3914
3V Eight-Channel Analog Front End
Features: Description: Eight Synchronous Sampling 24-bit Resolution
Delta-Sigma Analog-to-Digital (A/D) Converters The MCP3914 is a 3V eight-channel Analog Front End
(AFE), containing eight synchronous sampling deltasigma, Analog-to-Digital Converters (ADC), eight
PGAs, phase delay compensation block, low-drift
internal voltage reference, digital offset and gain error
calibration registers, and high-speed 20 MHz SPIcompatible serial interface.
The MCP3914 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 8bit commands, including various continuous read/write
modes and 16/24/32-bit data formats that can be
accessed by the Direct Memory Access (DMA) of an
8/16-or 32-bit MCU, and with the separate data ready
pin that can directly be connected to an Interrupt
Request (IRQ) input of an MCU.
The MCP3914 includes advanced security features to
secure the communications and the configuration
settings, such as a CRC-16 checksum on both serial
data outputs and static register map configuration. It
also includes a register-map lock through an 8-bit
secure key to stop unwanted write commands from …
