MAX6143AASA41+

Overview

The MAX6143AASA41+ is a high-precision series voltage reference providing a fixed output of 4.096V with ±0.06% initial accuracy and a maximum temperature coefficient of 3ppm/°C. It operates from an input voltage range of 6.1V to 40V, drawing up to 650µA of supply current while sourcing 30mA or sinking 2mA of load current. The device features a linear temperature sensor output (TEMP) proportional to die temperature and includes an active-low shutdown pin that reduces current to 0.01µA. It is housed in an 8-pin SO package and functions within a -40°C to +125°C temperature range.

Feature Summary

• Proprietary curvature-correction circuit and laser-trimmed thin-film resistors ensure low drift and high precision.
• Integrated TEMP pin provides a voltage output linearly proportional to the internal die temperature.
• Active-low SHDN pin enables deep power-down mode for significant current reduction.
• TRIM pin allows fine adjustment of the output voltage using an external resistive divider network.

Applications

• High-resolution A/D converters
• D/A converters
• Digital voltmeters
• Threshold detectors

Procurement Notes

Verify the specific suffix 'AASA41+' corresponds to the 4.096V output variant and the 8-SOIC package. Confirm the 'A' grade indicates the ±0.06% accuracy level and 3ppm/°C temperature coefficient as specified in the datasheet. Ensure the component meets RoHS3 compliance requirements if applicable to your manufacturing standards.

Selection Notes

Select this part when a stable 4.096V reference is required alongside integrated temperature sensing capabilities. The wide input voltage range accommodates various supply rails, while the low noise characteristics support precision signal chain applications. Consider the TRIM functionality if tighter system-level accuracy than the factory preset is necessary.

Part Context

This component belongs to the MAX6143 family of high-precision voltage references manufactured by Analog Devices Inc./Maxim Integrated. The family offers multiple fixed output voltages including 2.5V, 3.3V, 5.0V, and 10V variants. All members share the same core architecture featuring bandgap technology, low noise performance, and the integrated temperature sensor feature.

Replacement Considerations

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