MAX6166AESA+

Overview

The MAX6166AESA+ is a precision, micropower, low-dropout voltage reference with a fixed output of 2.5V. It operates within an input voltage range from VOUT + 0.2V to 12.6V and features a maximum temperature coefficient of 5ppm/°C and initial accuracy of ±2mV. The device typically draws 100μA of supply current and can source up to 5mA or sink 2mA of load current. It is housed in an 8-pin SO package and functions reliably across an extended temperature range of -40°C to +85°C.

Feature Summary

• Utilizes proprietary curvature-correction circuitry and laser-trimmed thin-film resistors for high stability
• Eliminates the need for external compensation capacitors due to internal frequency compensation
• Maintains supply current virtually independent of input voltage variations
• Capable of sourcing 5mA and sinking 2mA without requiring external biasing resistors

Applications

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

Procurement Notes

Verify the specific suffix 'A' corresponds to the required initial accuracy and temperature coefficient specifications before procurement. Confirm that the 8-pin SO package dimensions align with the target PCB land pattern. Ensure the input voltage source can provide sufficient current during turn-on transients to guarantee reliable operation under all conditions.

Selection Notes

Select this component when a stable 2.5V reference is required for space-constrained designs. The integrated design removes the need for external shunt resistors found in conventional references. Consider the quiescent current characteristics for battery-operated applications where power efficiency is critical. Verify that the load requirements fall within the specified sourcing and sinking capabilities.

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 levels. The MAX6166 variant specifically provides a 2.5V output, fitting into the series alongside options ranging from 1.25V to 5.0V.

Replacement Considerations

Other members of the MAX6161–MAX6168 family are pin-compatible replacements if different output voltages are acceptable.