MAX6177AASA+T

Overview

The MAX6177AASA+T is a high-precision voltage reference providing a fixed +3.3V output with ±0.06% initial accuracy and a maximum temperature coefficient of 3ppm/°C. It operates from an input voltage range of 5.3V to 40V, drawing a typical quiescent current of 320µA. The device sources up to 30mA and sinks up to 2mA of load current. It features a linear temperature sensor output proportional to die temperature and includes a TRIM pin for fine voltage adjustment. Stability is maintained without external capacitors, supporting loads up to 100µF.

Feature Summary

• Proprietary curvature-correction circuit and laser-trimmed thin-film resistors ensure low noise and high precision.
• Integrated linear temperature transducer output provides voltage proportional to die temperature.
• Short-circuit protection limits output current when shorted to ground or input.
• Stable operation without external output bypass capacitors.

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging rather than tube packaging. Confirm the 'A' grade designation matches the required ±0.06% initial accuracy specification. Ensure the operating environment falls within the -40°C to +125°C automotive temperature range. Validate that the input voltage exceeds the minimum dropout requirement for the 3.3V output.

Selection Notes

Select this component when a stable 3.3V reference is required alongside integrated temperature sensing capabilities. The wide input voltage range accommodates various supply rails up to 40V. Consider the low quiescent current for battery-powered applications. Verify that the package thermal characteristics meet the system's power dissipation requirements.

Part Context

This part belongs to the MAX6173–MAX6177 family of high-precision voltage references. The series offers preset voltages including 2.5V, 3.3V, 4.096V, 5.0V, and 10V. All variants share identical pinouts and feature sets, differing primarily in factory-preset output voltage and corresponding electrical specifications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.