MCP3919A1-E/SS

Overview

The MCP3919A1-E/SS is a Microchip Technology analog front-end (AFE) designed for energy metering applications. It integrates three channels of simultaneous sampling with 24-bit resolution Delta-Sigma ADCs. The device operates on a single 3V supply, supporting a voltage range of 2.7V to 3.6V. It features an SPI interface and is housed in a 28-lead SSOP package. Key electrical specifications include a signal-to-noise ratio of 94 dB, a gain error of 6%, and an integral nonlinearity of 5 PPM. It functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides three-channel simultaneous sampling for accurate power measurement
• Integrates high-resolution 24-bit Delta-Sigma analog-to-digital conversion
• Supports low-voltage operation with a 3V single-supply architecture
• Features digital calibration capabilities to maintain accuracy

Applications

• Single-phase energy meters
• Power monitoring systems
• Industrial control equipment requiring precise current and voltage measurement

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with system voltage levels and SPI communication protocols. Confirm availability through authorized distributors as stock status varies. Validate RoHS compliance and automotive qualification requirements if applicable to the target application environment.

Selection Notes

Select this component when three-phase or multi-wire single-phase metering requires synchronized channel sampling. Compare performance metrics such as SNR and linearity against alternative AFEs. Consider the SSOP package constraints for PCB layout. Evaluate power consumption requirements against the device's operational characteristics at varying data rates.

Part Context

This part belongs to the MCP3919 family of energy metering AFEs from Microchip Technology. It shares architectural similarities with other members like the MCP3919BA1 but may differ in specific calibration constants or automotive qualification status. The family targets cost-sensitive yet high-accuracy metering solutions.

Replacement Considerations

Check for direct substitutes such as the MCP3919BA1-E/SS for potential automotive-grade variants. Verify pinout compatibility and register map alignment before substituting. Consult official change notifications for any functional updates or obsolescence notices.