MAX6166AESA+T

Overview

The MAX6166AESA+T is a precision, micropower, low-dropout voltage reference providing a fixed 2.5V output in an 8-pin SO package. It operates within an input voltage range of 2.7V to 12.6V and draws a typical quiescent supply current of 100µA. The device features a maximum temperature coefficient of 5ppm/°C and initial accuracy of ±2mV. It can source up to 5mA or sink 2mA of load current while maintaining stability with capacitive loads.

Feature Summary

• Proprietary curvature-correction circuit ensures high precision across the operating temperature range
• Internally compensated design eliminates the need for external compensation capacitors
• Supply current remains virtually independent of the input supply voltage
• 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
• Cellular Phones and PDAs

Procurement Notes

Verify the specific suffix 'A' indicates the required initial accuracy and temperature coefficient specifications. Confirm the '+T' designation corresponds to the reel packaging format intended for surface-mount assembly. Ensure the 8-SO package outline matches the target PCB footprint requirements before finalizing procurement.

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 100µA quiescent current for battery life calculations. Verify that the input voltage stays above the dropout threshold relative to the 2.5V output under all expected load conditions.

Part Context

This part belongs to the MAX6161–MAX6168 family of precision voltage references manufactured by Analog Devices / Maxim Integrated. The series utilizes laser-trimmed thin-film resistors and BiCMOS processing to achieve low noise and high long-term stability. The MAX6166 variant specifically provides the 2.5V output option within this lineup.

Replacement Considerations

Other members of the MAX6161–MAX6168 family share identical pinouts and packages but offer different fixed output voltages such as 1.25V, 1.8V, 3.0V, 4.096V, 4.5V, or 5.0V.