MAX6143AASA33+

Overview

The MAX6143AASA33+ is a high-precision series voltage reference providing a fixed 3.3V output in an 8-pin SO package. It features a maximum temperature coefficient of 3ppm/°C and initial accuracy of ±0.06%. The device accepts input voltages from VOUT + 2V up to 40V, drawing a typical supply current of 500µA at +25°C. It sources 30mA or sinks 2mA of load current and includes an active-low shutdown pin that reduces current to 0.01µA. A dedicated TEMP pin provides a linear voltage proportional to die temperature.

Feature Summary

• Proprietary curvature-correction circuit with laser-trimmed thin-film resistors for low drift and high accuracy
• Integrated linear temperature sensor output proportional to die temperature
• Active-low shutdown feature significantly reduces quiescent supply current
• Capable of fine output voltage adjustment via external resistive-divider network on the TRIM pin

Applications

• High-resolution A/D and D/A converters
• Precision voltage regulators
• Threshold detectors
• Digital voltmeters
• Temperature sensing applications

Procurement Notes

Verify the specific suffix 'AASA33+' corresponds to the 3.3V output variant with 0.06% accuracy and 3ppm/°C temperature coefficient. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated. Ensure the package type matches the required 8-SOIC footprint for your design constraints.

Selection Notes

Select this component when a stable 3.3V reference is required alongside integrated temperature monitoring capabilities. The wide input voltage range accommodates various supply rails, while the low noise and high precision make it suitable for demanding signal chain applications requiring minimal external components.

Part Context

This part belongs to the MAX6143 family of high-precision voltage references. The 'A' grade denotes tighter initial accuracy (±0.06%) compared to the 'B' grade (±0.1%). The 'S' indicates the SOIC package, and '33' specifies the 3.3V nominal output voltage. The '+' suffix typically indicates RoHS compliance.

Replacement Considerations

MAX6143BASA33+