MAX6177AASA+

Overview

The MAX6177AASA+ is a high-precision series voltage reference providing a fixed +3.3V output with ±0.06% initial accuracy and a maximum temperature coefficient of 3ppm/°C over the -40°C to +125°C range. It accepts input voltages from (VOUT + 2V) up to +40V, draws 320µA typical supply current, and sources 30mA or sinks 2mA load current. The device includes a TRIM pin for fine adjustment and a TEMP pin delivering a linear voltage proportional to die temperature.

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.
• Output voltage can be finely adjusted using an external resistive divider network connected to the TRIM pin.
• Short-circuit protected output capable of driving capacitive loads up to 100µF without requiring external stability capacitors.

Applications

• High-resolution analog-to-digital converters
• Digital-to-analog converters
• Precision digital voltmeters
• Automotive electronic systems

Procurement Notes

Verify the specific suffix 'AASA+' against the manufacturer's official ordering guide to confirm package type and RoHS compliance status. Ensure the selected variant matches the required automotive qualification level if operating in harsh environments. Cross-reference the datasheet revision date to validate electrical characteristics against current production standards.

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, while the low quiescent current supports battery-operated designs. Verify that the 30mA sourcing capability meets the load requirements of the downstream circuitry.

Part Context

This part belongs to the MAX6173–MAX6177 family of high-precision voltage references. All members share identical features, including the temperature sensor and trim functionality, differing only in their factory-preset output voltages (+2.5V, +3.3V, +4.096V, +5.0V, or +10V). They utilize band-gap technology for low-noise performance.

Replacement Considerations

Other members of the MAX6173–MAX6177 family are functionally compatible but provide different preset output voltages. Direct substitutes must match the 3.3V output requirement. Verify pin compatibility and thermal resistance specifications before integration.