MAX6143AASA33+T

Overview

The MAX6143AASA33+T 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. It operates from an input voltage range of VOUT + 2V to 40V, drawing a typical quiescent supply current of 500µA at +25°C. The device sources up to 30mA and sinks 2mA of load current. It features a dedicated TEMP pin for die temperature sensing and a TRIM pin for fine voltage adjustment. The unit includes an active-low shutdown function reducing current to 0.01µA and requires no external output capacitor for stability.

Feature Summary

• Proprietary curvature-correction circuit ensures low temperature drift
• Integrated linear temperature transducer output proportional to die temperature
• Active-low shutdown capability minimizes power consumption in standby modes
• Stable without external output bypass capacitors

Applications

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

Procurement Notes

Verify the specific suffix '+T' indicates tape-and-reel packaging when sourcing components. Confirm that the 'A' grade designation corresponds to the tighter ±0.06% accuracy specification rather than the standard B grade. Ensure compatibility with the required 8-pin SO package dimensions for PCB layout.

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 characteristics support precision signal chain applications. Consider the trim functionality if system-level calibration is necessary to compensate for board-level variations.

Part Context

This part belongs to the MAX6143 family of high-precision voltage references manufactured by Analog Devices Inc./Maxim Integrated. The family offers multiple preset output voltages including 2.5V, 4.096V, 5.0V, and 10V variants. All members share the same 8-pin SO package and feature bandgap technology for low-noise performance.

Replacement Considerations

MAX6143BASA33+