MAX6174AASA+

Overview

The MAX6174AASA+ is a high-precision voltage reference providing a fixed +4.096V output. It features a maximum temperature coefficient of 3ppm/°C and an initial accuracy of ±0.06%. The device accepts input voltages from 6.1V to 40V, draws 500µA maximum supply current, and sources up to 30mA. It includes a TEMP pin for die temperature sensing and a TRIM pin for fine adjustment. Operating over -40°C to +125°C, it uses band-gap technology and requires no output bypass capacitor for stability.

Feature Summary

• Proprietary curvature-correction circuit with laser-trimmed thin-film resistors ensures low drift and high precision.
• Integrated linear temperature transducer output proportional to die temperature for sensing applications.
• Capable of sourcing 30mA or sinking 2mA load current without requiring external output capacitors.
• Output voltage can be finely adjusted using a resistive divider network connected to the TRIM pin.

Applications

• High-resolution analog-to-digital converters (ADCs)
• Digital-to-analog converters (DACs)
• Automotive electronic systems
• Precision digital voltmeters

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and RoHS compliance status. Confirm that the ordering code matches the required output voltage and accuracy grade. Check for AEC-Q100 qualification if automotive reliability is required, as this may involve a distinct /V suffix variant. Ensure the component meets the specified thermal operating range for the target environment.

Selection Notes

Select this component when a stable 4.096V reference is needed with minimal temperature drift. The integrated temperature sensor allows for simultaneous ambient monitoring. Consider the 30mA source capability for driving moderate loads directly. Verify that the input voltage remains within the guaranteed regulation range relative to the output level.

Part Context

This part belongs to the MAX6173–MAX6177 family of high-precision voltage references. All members share identical architectures, featuring curvature correction and temperature outputs. They differ primarily in their factory-preset output voltages, which include 2.5V, 3.3V, 4.096V, 5.0V, and 10V options. The family maintains consistent performance characteristics across all variants.

Replacement Considerations

Other members of the MAX6173–MAX6177 series offer different preset voltages but share the same package and functional interface. Direct substitutes must match the 4.096V output requirement. Verify pin compatibility and thermal specifications before integrating alternative components.

FAQ

Does the MAX6174AASA+ require an output capacitor for stability?

No, the device does not require an output bypass capacitor for stability and is stable with capacitive loads up to 100μF.

How is the output voltage trimmed on this device?

The output voltage is trimmed by connecting a resistive divider network between the OUT, TRIM, and GND pins.

What is the function of the TEMP pin?

The TEMP pin provides an output voltage that is linearly proportional to the internal die temperature.