MAX6166BESA

Overview

The MAX6166BESA is a precision, low-dropout, micropower 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 VOUT + 0.2V to 12.6V and draws a typical quiescent supply current of 100µA. It can source up to 5mA or sink 2mA of load current while maintaining stability with capacitive loads. The component is housed in an 8-pin SO package and functions reliably across an extended temperature range of -40°C to +85°C.

Feature Summary

• Features proprietary curvature-correction circuitry and laser-trimmed thin-film resistors for high precision.
• Offers internally compensated design that eliminates the need for external compensation capacitors.
• Provides supply current virtually independent of input voltage variations.
• Capable of sourcing 5mA and sinking 2mA of load current.

Applications

• Analog-to-Digital Converters (ADCs)
• Portable Battery-Powered Systems
• Precision +3V/+5V Systems

Procurement Notes

Verify the specific suffix 'B' indicates the required initial accuracy and temperature coefficient specifications before procurement. Confirm the 'ES' package code corresponds to the standard 8-pin SO form factor required by the target PCB layout. Ensure the '+T' designation aligns with the preferred reel or cut tape packaging format for the manufacturing process.

Selection Notes

Select this part when a stable 2.5V reference is needed with moderate precision requirements. The B-grade variant offers wider tolerance limits compared to the A-grade version. Consider the low dropout voltage and micropower consumption for battery-operated designs where board space is limited due to the lack of external components.

Part Context

This component belongs to the MAX6161–MAX6168 series of precision voltage references manufactured by Analog Devices Inc./Maxim Integrated. The series shares common architectural features including BiCMOS processing and similar pin configurations. Variants within the family differ primarily in their fixed output voltage levels and precision grades, all utilizing the same 8-pin SO package.

Replacement Considerations

Other members of the MAX6161–MAX6168 family may serve as functional replacements if different output voltages are acceptable. Verify that any substitute maintains the required 8-pin SO package dimensions and electrical characteristics suitable for the specific application constraints.

FAQ

Does the MAX6166BESA require an external capacitor for stability?

No, the devices are internally compensated and do not require an external compensation capacitor for frequency stability.

What is the maximum load current capability of this reference?

The MAX6166BESA can source up to 5mA and sink up to 2mA of load current.