MAX6167AESA+

Overview

The MAX6167AESA+ is a precision, micropower voltage reference from the MAX6161–MAX6168 series. It provides a fixed output voltage of 4.5V with an initial accuracy of ±2mV and a maximum temperature coefficient of 5ppm/°C. The device operates within an input voltage range of (VOUT + 200mV) to 12.6V and draws a typical quiescent supply current of 100μA. It can source up to 5mA or sink 2mA of load current. Designed for extended temperatures from -40°C to +85°C, it utilizes curvature-correction circuitry and laser-trimmed thin-film resistors.

Feature Summary

• Proprietary curvature-correction circuit combined with laser-trimmed thin-film resistors ensures high precision and low drift.
• Micropower operation with supply current virtually independent of input voltage, maximizing efficiency in battery-powered systems.
• Internally compensated design eliminates the need for external compensation capacitors, saving board space.
• Capable of sourcing 5mA and sinking 2mA load currents while maintaining stability with capacitive loads.

Applications

• Analog-to-Digital Converters (ADCs)
• Portable Battery-Powered Systems
• Notebook Computers
• PDAs, GPS, DMMs
• Cellular Phones

Procurement Notes

Verify the specific suffix 'A' indicates the ±2mV initial accuracy grade when ordering. Confirm the package type matches the required SO-8 footprint. Ensure the application input voltage remains within the specified operational limits relative to the 4.5V output. Check for RoHS compliance status if required by manufacturing standards. Validate that the thermal environment stays within the -40°C to +85°C operating range.

Selection Notes

Select this component when a stable 4.5V reference is required with minimal power consumption. It is suitable for applications needing high accuracy without external trimming components. Consider the low dropout characteristic for systems with limited headroom. Evaluate the 5mA sourcing capability against peak load demands. Compare against shunt references if board space and efficiency are critical constraints.

Part Context

This part belongs to the MAX6161–MAX6168 family of precision voltage references manufactured by Analog Devices / Maxim Integrated. The family shares common features such as micropower operation, low dropout, and high output current capabilities. Variations within the series primarily differ in their fixed output voltage options, ranging from 1.25V to 5V, while maintaining similar performance characteristics and packaging.

Replacement Considerations

Other members of the MAX6161–MAX6168 series may serve as alternatives if different output voltages are acceptable. Verify pin compatibility and package dimensions before substitution. Ensure the replacement part meets the same accuracy and temperature coefficient requirements for the specific application.

FAQ

Does the MAX6167AESA+ require an external capacitor for stability?

No, the device is internally compensated and does not require an external compensation capacitor for frequency stability.

What is the maximum load current the MAX6167AESA+ can handle?

It can source up to 5mA and sink up to 2mA of load current.

How does the supply current behave with changes in input voltage?

The quiescent supply current is virtually independent of the supply voltage, varying by only 8μA/V maximum.