MAX6190AESA+T

Overview

The MAX6190AESA+T is a precision, micropower, low-dropout voltage reference IC manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 1.25V with an initial accuracy of ±2mV and a maximum temperature coefficient of 5ppm/°C. The device operates within a supply voltage range of 2.5V to 12.6V and draws a maximum quiescent supply current of 35µA. It supports source and sink currents up to 500µA with guaranteed load regulation. The component is housed in an 8-pin SO package and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Utilizes proprietary curvature-correction circuitry and laser-trimmed thin-film resistors for high precision
• Series-mode architecture ensures supply current remains virtually independent of input voltage variations
• Internally compensated design allows stability with capacitive loads up to 2.2nF without external components

Applications

• Hand-held instruments
• Analog-to-Digital and Digital-to-Analog Converters
• Industrial Process Control
• Precision 3V/5V Systems
• Hard-Disk Drives

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing from distributors. Confirm that the '+T' designation aligns with RoHS compliance requirements for your assembly process. Ensure the ordering part number matches the exact accuracy grade (A) and package type (SOIC-8) required for the design. Cross-reference the manufacturer's latest datasheet revision to confirm pinout and electrical characteristics have not changed.

Selection Notes

Select this component when battery-powered applications require minimal quiescent current consumption alongside high voltage stability. The low dropout characteristic makes it suitable for systems where the input voltage is close to the desired reference level. Consider the internal compensation benefits if board space constraints prevent the use of large external filtering capacitors while maintaining transient response performance.

Part Context

This device belongs to the MAX6190–MAX6195/MAX6198 family of precision voltage references. All members share similar architectural features, including micropower operation and low-dropout capabilities, but differ in their fixed output voltage levels ranging from 1.25V to 5.0V. The MAX6190 specifically targets applications requiring a 1.25V reference standard.

Replacement Considerations

Other members of the MAX619x family, such as MAX6191 or MAX6192, offer identical packages and electrical behaviors except for different fixed output voltages.