MAX6167BESA

Overview

The MAX6167BESA+ is a precision, micropower, low-dropout series voltage reference from the MAX6161–MAX6168 family. It provides a fixed output voltage of 4.5V with an initial accuracy of ±5mV and a maximum temperature coefficient of 10ppm/°C. The device operates within an input voltage range of 4.7V to 12.6V, drawing a typical quiescent supply current of 100µA that remains virtually independent of the supply voltage. It can source up to 5mA or sink 2mA of load current while maintaining stability without requiring external compensation capacitors.

Feature Summary

• Features proprietary curvature-correction circuitry and laser-trimmed thin-film resistors for high precision.
• Offers supply current independence from input voltage variations to maximize efficiency in battery-powered systems.
• Eliminates the need for external compensation capacitors, saving board space in compact designs.
• Capable of sourcing 5mA and sinking 2mA load currents with low dropout voltage characteristics.

Applications

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

Procurement Notes

Verify the specific suffix 'B' indicates the required initial accuracy and temperature coefficient specifications for your design. Confirm the package type matches the SO-8 footprint requirements. Ensure the input voltage supply stays within the guaranteed operational range relative to the 4.5V output. Check RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when a stable 4.5V reference is needed with minimal power consumption. Consider the ±5mV accuracy and 10ppm/°C drift limits against system tolerance requirements. Evaluate the 100µA quiescent current impact on total system battery life. Compare against shunt references if board space is limited, as this device requires no external biasing resistors.

Part Context

This part belongs to the MAX6161–MAX6168 family of precision voltage references manufactured by Analog Devices / Maxim Integrated. The family shares common architectural features including micropower operation and low-dropout performance. Variations within the family are defined by their fixed output voltage options ranging from 1.25V to 5V and different accuracy grades designated by letter suffixes.

Replacement Considerations

Other members of the MAX6161–MAX6168 family may serve as substitutes if the output voltage requirement differs. Verify pin compatibility and package dimensions before replacing. Cross-referencing with other precision series references requires checking thermal coefficient and load regulation specifications to ensure functional equivalence.