MAX6161AESA+T

Overview

The MAX6161AESA+T is a precision, low-dropout, micropower voltage reference from the Analog Devices / Maxim Integrated MAX6161–MAX6168 series. It provides a fixed output voltage of 1.25V with an initial accuracy of ±2mV and a maximum temperature coefficient of 10ppm/°C. The device operates within an input voltage range of 2.5V to 12.6V, drawing a typical quiescent supply current of 100µA. It can source up to 4mA or sink 2mA of load current while maintaining stability with capacitive loads. Packaged in an 8-pin SOIC, it functions 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.
• Delivers high output current capability without requiring external biasing resistors.
• Internally compensated design eliminates the need for external compensation capacitors.
• Maintains supply current virtually independent of input voltage variations.

Applications

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

Procurement Notes

Verify the specific suffix 'A' confirms the 1.25V output voltage and ±2mV initial accuracy class. Confirm the 'ESA+' designation indicates the 8-pin SO package and lead-free/RoHS compliance. Ensure the '+T' suffix matches the required reel packaging format if applicable. Cross-reference the manufacturer part number against official Analog Devices documentation to validate authenticity and revision status before procurement.

Selection Notes

Select this component when a stable 1.25V reference is required for low-power applications. It is suitable for systems where board space is limited due to the lack of external capacitor requirements. Consider the 4mA sourcing limit for load demands. Compare against other series members like MAX6166A for different voltage needs. Evaluate thermal performance within the specified -40°C to +85°C operating range.

Part Context

This device belongs to the MAX6161–MAX6168 family of precision voltage references. All members share identical pinouts, package styles, and core architectural features, differing primarily in their fixed output voltage settings. The family utilizes BiCMOS process technology and includes 117 transistors. This specific variant sets the output to 1.25V, serving as the lowest voltage option in the standard series lineup.

Replacement Considerations

Direct functional substitutes within the same family include MAX6161BESA+T, which offers slightly lower accuracy (±4mV) and higher temperature drift (15ppm/°C). Other voltage variants such as MAX6162AESA+T or MAX6166AESA+T are pin-compatible but provide different output voltages (2.048V and 2.5V respectively).