Microchip Technology MCP3913 6-Channel Analog Front End
Microchip Technology MCP3913 6-Channel Analog Front End (AFE) combines six simultaneous sampling delta-sigma (ΔΣ) Analog-to-Digital Converters (ADC) and six Programmable Gain Amplifiers (PGA) in a single device. The MCP3913 also integrates a phase delay compensation block, a low-drift internal voltage reference, digital offset and gain error calibration registers, and a high-speed 20MHz SPI compatible serial interface. The MCP3913 is 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 auto-zeroing.
The MCP3913 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. The device also includes a register-map lock through an 8-bit secure key to stop unwanted write commands from processing. The MCP3913 can interface with various voltage and current sensors, including shunts, current transformers, Rogowski coils, and Hall-effect sensors.
The Microchip Technology MCP3913 AFE is available in SSOP-28 and UQFN-40 package options. This device is AEC-Q100 Grade 1 qualified for use in automotive applications.
Features
- Six simultaneous sampling 24-bit Delta-Sigma ADCs
- 94.5dB SINAD, -107dBc total harmonic distortion (THD) (up to 35th harmonic), 112dBFS SFDR for each channel
- 0.1% typical active power measurement error over a 10,000:1 dynamic range
- Advanced security features
- 16-bit Cyclic Redundancy Check (CRC) checksum
- 16-bit CRC checksum and interrupt alert for register map configuration
- Register map lock with 8-bit secure key
- Programmable data rate up to 125ksps
- Oversampling ratio up to 4096
- Ultra-low power shutdown mode with <10µA
- -122dB crosstalk between channels
- Differential voltage reference input pins
- High gain programmable-gain amplifier (PGA) on each channel (up to 32 V/V)
- Phase delay compensation with 1µs time resolution
- Separate data ready pin for easy synchronization
- Individual 24-bit digital offset and gain error correction for each channel
- High-speed 20MHz Serial Peripheral Interface (SPI) with Mode 0,0 and 1,1 compatibility
- Continuous read/write modes for minimum communication time
- -40°C to +125°C operating temperature range
- SSOP-28 and UQFN-40 package options
- AEC-Q100 Grade 1
Applications
- Polyphase energy meters
- Energy metering and power measurement
- Automotive
- Portable instrumentation
- Medical and power monitoring
- Audio and voice recognition
Development Tools
Microchip Technology MCP3913 Evaluation Board (ADM00522)
Demonstration and development platform for the MCP3913 6-Channel Analog Front End (AFE)
Block Diagram
Package Options
