MCP3905A-I/SS

Overview

The MCP3905A-I/SS is a single-phase energy metering integrated circuit manufactured by Microchip Technology. It features a 16-bit resolution and operates within an automotive temperature range of -40°C to +85°C. The device utilizes a 24-pin SSOP package with dimensions of 5.30 mm width. It supports a supply voltage range of 4.5 V to 5.5 V and draws a typical supply current of 2.7 mA. Key electrical specifications include a measurement error of 0.1%, an input impedance of 390 kΩ, and I/O voltage levels of 2.4 V (high) and 0.85 V (low).

Feature Summary

• Provides high-precision energy measurement capabilities suitable for automotive applications.
• Integrates analog front-end processing with digital signal processing tailored for metering.
• Delivers accurate active real power pulse output functionality.

Applications

• Automotive energy monitoring systems
• Single-phase smart metering devices
• Power management circuits requiring precise energy data acquisition

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with AEC-Q100 requirements if automotive qualification is mandatory. Cross-reference ordering information with authorized distributors to validate part authenticity and revision status before procurement.

Selection Notes

Select this component for single-phase applications requiring 16-bit accuracy in automotive environments. Compare against the commercial grade variant MCP3905A-E/SS if extended temperature ranges up to 125°C are not required. Consider the MCP3905AT-I/SS variant if tape-and-reel packaging is preferred over tube packaging for automated assembly processes.

Part Context

This component belongs to the MCP3905 series of energy metering ICs from Microchip Technology. It is designed as a specialized data acquisition solution for power monitoring. The series includes variants such as the MCP3905L and MCP3906, offering different packaging options and temperature ratings while maintaining core metering functionalities.

Replacement Considerations

The MCP3905A-E/SS serves as a commercial-grade alternative with an extended maximum operating temperature of 125°C. For reel-packaged versions, the MCP3905AT-I/SS provides identical electrical characteristics but utilizes tape-and-reel packaging instead of tubes.