MAX6168AESA+T

Overview

The MAX6168AESA+T is a precision, micropower, low-dropout voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 1.8V with an initial accuracy of ±2mV and a maximum temperature coefficient of 5ppm/°C. The device operates within an input voltage range of 2.0V to 12.6V and draws a typical quiescent supply current of 100µA. It can source up to 5mA or sink 2mA of load current while maintaining stability with capacitive loads. The component is housed in an 8-pin SO package and functions reliably across an extended temperature range from -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 stable operation with capacitive loads while minimizing board space requirements.

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 required initial accuracy and temperature coefficient grade before procurement. Confirm that the '+T' designation aligns with the required reel packaging format for surface-mount assembly. Ensure the 8-pin SO package dimensions match the target PCB land pattern specifications. Cross-reference the manufacturer part number against the latest datasheet revision to confirm pinout consistency.

Selection Notes

Select this component when a precise 1.8V reference is needed with minimal power consumption. It is suitable for applications where board space is limited due to the elimination of external capacitors. Consider the 5mA sourcing capability for driving moderate loads directly. Verify that the input voltage remains above the minimum dropout requirement for the intended load conditions.

Part Context

This device belongs to the MAX6161–MAX6168 family of precision voltage references. The family shares common architectural features including micropower operation and low-dropout characteristics. Variants within the series differ primarily in their fixed output voltage levels, ranging from 1.25V to 5.0V. All members utilize the same 8-pin SO package and offer similar performance metrics regarding noise and long-term stability.

Replacement Considerations

Direct functional substitutes within the same family include MAX6168ESA+ for tube packaging. Other voltage options like MAX6166AESA+ (2.5V) or MAX6163AESA+ (3.0V) may be used if the system allows for voltage adjustment. Verify pin compatibility and thermal characteristics when substituting with different package types or manufacturers.