MAX6168AESA+

Overview

The MAX6168AESA+ is a precision, low-dropout, micropower voltage reference from the MAX6161–MAX6168 series. 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 2.5V 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 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.
• 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 specifications. Confirm the 'E' denotes the 8-pin SO package type and the '+' signifies RoHS compliance. Ensure the ordering code matches the exact 1.8V output requirement. Cross-reference the manufacturer's latest documentation for any potential obsolescence notices or pin configuration updates before finalizing procurement.

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 lack of external capacitor requirements. Consider the 5mA sourcing capability for driving moderate loads directly. Verify that the input voltage remains within the specified dropout limits for the expected load conditions.

Part Context

This part belongs to the MAX6161–MAX6168 family of precision voltage references manufactured by Analog Devices Inc./Maxim Integrated. The family shares common architectural features including micropower operation and low-dropout characteristics. Variations within the series are defined by their specific fixed output voltages, ranging from 1.25V to 5V, allowing designers to choose the exact reference level required for their system architecture.

Replacement Considerations

Other members of the MAX6161–MAX6168 series may serve as functional replacements if different output voltages are acceptable. Verify pin compatibility and thermal performance when substituting. Check for updated datasheet revisions that might affect electrical characteristics or packaging details.