MAX6166BESA+

Overview

The MAX6166BESA+ is a precision, micropower, low-dropout voltage reference from the MAX6161–MAX6168 family. It provides a fixed output voltage of 2.5V with an initial accuracy of ±5mV and a maximum temperature coefficient of 10ppm/°C. The device operates within an input voltage range of 2.7V to 12.6V and draws a typical quiescent supply current of 120µA. 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 virtually independent of supply voltage to maximize efficiency in battery-powered systems
• Internally compensated design eliminates the need for external frequency-stability capacitors
• Capable of sourcing 5mA and sinking 2mA load currents with low dropout voltage

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. Confirm the package type matches the SO-8 footprint requirements for the target PCB layout. Ensure the operating environment stays within the specified -40°C to +85°C temperature range for guaranteed performance parameters.

Selection Notes

Select this component when a stable 2.5V reference is needed with minimal board space due to the lack of external capacitor requirements. Consider the 10ppm/°C temperature coefficient limit for thermal stability needs. Evaluate the 120µA quiescent current against system power budgets compared to shunt-mode references that waste current through series resistors.

Part Context

This part belongs to the MAX6161–MAX6168 series of three-terminal voltage references manufactured by Analog Devices Inc./Maxim Integrated. The family shares identical pinouts and general characteristics, differing primarily in output voltage options ranging from 1.25V to 5V and varying accuracy grades denoted by letter suffixes.

Replacement Considerations

Direct substitutes within the same family include MAX6166AESA+ for tighter accuracy specifications. Other models like MAX6161 through MAX6165 provide different fixed voltages but share the same package and functional interface.