MCP1502T-40E/CHY

Overview

The MCP1502T-40E/CHY is a buffered voltage reference with a nominal output of 4.096 V and an initial accuracy of 0.1%. It operates within a temperature range of -40°C to +125°C, featuring a maximum temperature coefficient of 7 ppm/°C. The device supports a supply voltage from 4.3 V to 5.5 V and draws a typical operating current of 140 µA. It provides ±20 mA of load current capability and includes a shutdown pin for power management.

Feature Summary

• Chopper-based amplifier architecture reduces drift and improves long-term stability
• Capable of sourcing and sinking up to 20 mA of load current
• Includes active-low digital shutdown control for low-power operation

Applications

• Precision data acquisition systems
• Electric vehicle battery management systems
• High-resolution data converters
• Medical equipment applications
• Industrial controls

Procurement Notes

Verify the specific suffix 'CHY' against official Microchip documentation to confirm package type and tape-and-reel specifications. Ensure the ordering code matches the required automotive qualification grade and temperature range. Cross-reference the datasheet revision to confirm all electrical characteristics align with your design requirements before finalizing procurement.

Selection Notes

Select this component when a stable 4.096 V reference with high precision is required in a compact surface-mount package. Consider the 140 µA quiescent current for battery-powered designs. Verify that the input voltage remains above the minimum dropout threshold of 4.3 V under all operating conditions to maintain regulation.

Part Context

This part belongs to the MCP1502 family of high-precision buffered voltage references manufactured by Microchip Technology. It shares architectural similarities with the MCP1501 but offers distinct performance characteristics tailored for automotive and industrial environments requiring strict temperature stability and low noise.

Replacement Considerations

MCP1502-40E/SN

FAQ

How does the chopper-based amplifier affect the MCP1502's performance?

The chopper-based amplifier architecture effectively reduces drift to zero, significantly improving long-term drift performance and minimizing temperature-dependent offsets.

What is the function of the SHDN pin on the MCP1502?

The SHDN pin is an active-low digital input that places the device into a shutdown state, tri-stating the output driver to minimize power consumption.