MAX6167AESA+T

Overview

The MAX6167AESA+T is a precision, micropower, low-dropout voltage reference from the MAX6161–MAX6168 series. It provides a fixed output voltage of 4.5V with an initial accuracy of ±2mV and a maximum temperature coefficient of 5ppm/°C. The device operates within an input voltage range of (VOUT + 200mV) to 12.6V and draws a typical quiescent supply current of 100μA. It can source up to 5mA or sink 2mA of load current without requiring external compensation capacitors or biasing resistors.

Feature Summary

• Features proprietary curvature-correction circuitry and laser-trimmed thin-film resistors for high precision.
• Offers supply current virtually independent of supply voltage, maximizing efficiency in battery-operated systems.
• Internally compensated design eliminates the need for external frequency-stability capacitors.
• Capable of sourcing 5mA 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 'A' indicates the ±2mV initial accuracy and 5ppm/°C temperature coefficient grade. Confirm the '+T' designation corresponds to tape-and-reel packaging rather than tube packaging. Ensure the component is sourced from authorized distributors to guarantee authenticity and traceability, as counterfeit parts may exhibit degraded long-term stability or incorrect electrical characteristics.

Selection Notes

Select this part when a stable 4.5V reference is required with minimal board space due to the lack of external capacitor requirements. Consider the 100μA quiescent current for power-sensitive designs. Verify that the input voltage remains above VOUT + 200mV to ensure proper regulation. Evaluate the 5mA source capability against the application's peak load demands to prevent excessive voltage droop.

Part Context

This component belongs to the MAX6161–MAX6168 family of precision voltage references manufactured by Analog Devices / Maxim Integrated. The family shares a common SO-8 package and internal architecture, differing primarily in their fixed output voltage options ranging from 1.25V to 5V. The MAX6167 specifically targets applications needing a 4.5V rail derived from higher voltage supplies.

Replacement Considerations

Public confirmed substitute part numbers: MAX6167ESA+