MCP1502T-10E/CHY

Overview

The MCP1502T-10E/CHY is a buffered voltage reference with an output of 1.024 V, housed in a 6-lead SOT-23 package. It features a maximum temperature coefficient of 7 ppm/°C and an initial accuracy of 0.1%. The device operates within a supply voltage range of 1.65 V to 5.5 V and draws a typical operating current of 140 µA. It supports a maximum load current of ±20 mA and includes a shutdown pin for power management.

Feature Summary

• Utilizes chopper-based amplifiers to reduce drift to zero and improve long-term stability.
• Capable of sourcing and sinking up to 20 mA of output current.
• Includes a digital shutdown pin that tri-states the output when active-low.
• Features curvature-compensated band gap architecture for high precision.

Applications

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

Procurement Notes

Verify the specific suffix 'CHY' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm the 'E' designation aligns with the intended environmental operating specifications. Ensure the component meets all relevant automotive qualification standards if deployed in Grade 1 temperature range environments.

Selection Notes

Select this variant when a precise 1.024 V reference is required alongside low noise performance. Consider the 140 µA quiescent current for battery-powered designs. Evaluate the 20 mA drive capability against load requirements. Verify input voltage constraints relative to the minimum dropout voltage at the expected load conditions.

Part Context

This component belongs to the MCP1502 family of high-precision buffered voltage references manufactured by Microchip Technology. The family offers multiple voltage options and shares common architectural features such as low drift and high accuracy. It serves as a stable reference source for analog-to-digital converters and other sensitive measurement circuits.

Replacement Considerations

MCP1502T-10E/MF

FAQ

How does the MCP1502 achieve its low temperature coefficient?

The device employs a second-order temperature compensated circuit combined with chopper-based amplifiers to effectively eliminate temperature-dependent offsets and reduce drift to near zero.

What is the function of the SHDN pin?

The SHDN pin is an active-low digital input that places the device into a shutdown state, causing the output driver to become tri-stated and reducing power consumption.