MAX6161BESA+T

Overview

The MAX6161BESA+T is a precision, low-dropout, micropower voltage reference from the MAX6161–MAX6168 series. It provides a fixed output voltage of 1.25V with an initial accuracy of ±4mV and a temperature coefficient of 15ppm/°C (max). The device operates within an input voltage range of 2.5V to 12.6V and draws a typical quiescent supply current of 100µA. It can source up to 4mA or sink 2mA of load current. 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 supply current virtually independent of supply voltage, eliminating external biasing resistors.
• Internally compensated design removes the need for external compensation capacitors.
• Capable of sourcing 4mA and sinking 2mA load currents while maintaining stability.

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 '+T' designation corresponds to the reel packaging format. Ensure the manufacturer is identified as Analog Devices Inc./Maxim Integrated. Cross-reference the datasheet revision to validate electrical characteristics against the intended application requirements.

Selection Notes

Select this component when a fixed 1.25V reference is required with minimal board space due to internal compensation. Consider the 4mA sourcing limit if higher drive capability is needed. Evaluate the 15ppm/°C temperature drift against system thermal variations. Verify that the 2.5V minimum input voltage aligns with the available power rails.

Part Context

This part belongs to the MAX6161–MAX6168 family of precision voltage references. All members share identical pinouts, packages, and general performance characteristics, differing primarily in their fixed output voltage options and specific accuracy grades. The MAX6161 specifically denotes the 1.25V output variant within this series.

Replacement Considerations

Other members of the MAX6161–MAX6168 series may serve as functional replacements if different output voltages are acceptable. Verify that any substitute maintains the same 8-SOIC package and electrical limits for input voltage and load current.

FAQ

Does the MAX6161 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 the MAX6161 can source?

The MAX6161 can source up to 4mA of load current.