MCP3910A1T-E/SSVAO

Analog Front End (AFE) Overview

The MCP3910A1T-E/SSVAO is a 3V two-channel Analog Front End (AFE) featuring synchronous sampling 24-bit Delta-Sigma ADCs. It provides high-precision measurement with 93.5 dB SINAD, -107 dBc THD, and 112 dB SFDR per channel. The device includes programmable gain amplifiers (up to 32 V/V), phase delay compensation, and an internal low-drift 1.2V voltage reference. It supports flexible serial interfaces including SPI and a two-wire mode for polyphase shunt energy meters. Operating on 2.7V to 3.6V supplies, it achieves typical active power measurement error of 0.1% over a 10,000:1 dynamic range.

Analog Front End (AFE) Feature Summary

• Two synchronous sampling 24-bit Delta-Sigma ADCs with up to 125 ksps output data rate
• Advanced security features including 16-bit CRC checksums and register map lock with 8-bit secure key
• Flexible serial interface supporting both SPI and a simple two-wire interface
• Individual 24-bit digital offset and gain error correction for each channel

Analog Front End (AFE) Applications

• Single-phase and polyphase energy meters
• Energy metering and power measurement systems
• Automotive applications
• Portable instrumentation
• Medical and power monitoring devices

Analog Front End (AFE) Procurement Notes

Verify the specific ordering suffix 'E/SSVAO' against the manufacturer's current documentation to confirm package type and environmental compliance status. Ensure that the required quantity aligns with the standard factory reel packaging specifications provided in the official datasheet.

Analog Front End (AFE) Selection Notes

Select this component for applications requiring high-resolution simultaneous voltage and current sensing. The integrated phase delay compensation and individual channel calibration registers simplify system design for accurate energy metering. Verify that the master clock frequency and oversampling ratio settings meet the required data throughput and noise performance targets.

Analog Front End (AFE) Part Context

This part belongs to the MCP3910 series of analog front ends designed for energy metering. The 'E' designation indicates operation across the extended industrial temperature range of -40°C to +125°C. The 'SS' suffix specifies the SSOP-20 package option, while 'VAO' typically denotes a specific automotive or lifecycle variant configuration.

Analog Front End (AFE) Replacement Considerations

Direct pin-to-pin replacements within the same family include other MCP3910 variants with different package options such as QFN. Cross-family comparisons should consider the MCP3911 for dual-channel configurations with similar interface requirements.