MAX6143BASA41

Overview

The MAX6143BASA41 is a high-precision series voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 4.096V with an initial accuracy of ±0.06% and a temperature coefficient of 3ppm/°C. The device operates within an input voltage range of 6.1V to 40V, drawing a supply current of 650µA while sourcing up to 30mA of load current. It features low noise performance, specified at 7µVp-p from 0.1Hz to 10Hz and 11.5µVrms from 10Hz to 10kHz. The component is housed in an 8-SOIC package and supports operation across a temperature range of -40°C to +125°C.

Feature Summary

• Incorporates proprietary curvature-correction circuitry for exceptional thermal stability
• Provides integrated temperature sensing via dedicated TEMP output pin
• Enables fine output voltage adjustment through TRIM input capability
• Operates without requiring external output bypass capacitors for stability

Applications

• High-resolution analog-to-digital converter (ADC) references
• Digital-to-analog converter (DAC) voltage standards
• Precision temperature-sensing applications utilizing the TEMP output
• Data acquisition systems requiring stable reference voltages

Procurement Notes

Verify the specific suffix 'B' against official manufacturer documentation to confirm exact accuracy grade and feature set, as variations exist within the MAX6143 family. Ensure compatibility with the required 8-SOIC footprint and validate that the 4.096V output aligns with system design requirements before procurement.

Selection Notes

Select this component when ultra-low drift and high initial accuracy are critical for signal chain integrity. The integrated temperature sensor offers a cost-effective solution for monitoring die temperature without additional discrete sensors. Consider the 30mA source capability for driving moderate loads directly, reducing external buffer requirements in compact designs.

Part Context

The MAX6143 belongs to Maxim Integrated's high-precision voltage reference portfolio, designed for demanding industrial and automotive environments. Utilizing bandgap technology with laser-trimmed thin-film resistors, it ensures long-term reliability. The series includes various output voltages and packages, with the ASA41 variant specifically targeting precision measurement applications requiring tight tolerance specifications.

Replacement Considerations

Consult official substitution guides for verified alternatives such as the MAX6143AASA41 or MAX6143CASA41, which may offer different accuracy grades or packaging options. Cross-reference electrical parameters carefully to ensure functional equivalence in existing designs.