MAX6143BASA33+T

Overview

The MAX6143BASA33+T is a high-precision series voltage reference providing a fixed +3.3V output with ±0.1% initial accuracy and a maximum temperature coefficient of 10ppm/°C. It operates over an extended temperature range of -40°C to +125°C, accepting input voltages from VOUT + 2V up to +40V. The device draws 320µA to 500µA of quiescent supply current and can source up to 30mA or sink 2mA of load current. Key features include an active-low shutdown pin reducing current to 0.01µA, a linear temperature sensor output (TEMP), and a trim input for fine voltage adjustment. It is stable without external output capacitors and supports loads up to 100µF.

Feature Summary

• Proprietary curvature-correction circuit and laser-trimmed thin-film resistors ensure low noise and high precision.
• Integrated linear temperature transducer provides a voltage output proportional to die temperature.
• Active-low shutdown feature significantly reduces supply current for power-sensitive applications.
• Capable of sourcing 30mA and sinking 2mA load currents without requiring output bypass capacitors.

Applications

• High-resolution A/D and D/A converters
• Precision regulators and threshold detectors
• Digital voltmeters
• Temperature sensing systems

Procurement Notes

Verify the specific suffix '+T' indicates reel packaging when confirming order details. Ensure the 'B' grade designation matches the required 10ppm/°C temperature coefficient and 0.1% accuracy specifications for your design. Confirm the manufacturer is Analog Devices Inc./Maxim Integrated to guarantee authenticity. Check for RoHS compliance status if environmental regulations apply to your project.

Selection Notes

Select this component when a fixed 3.3V reference with moderate precision (0.1%) is sufficient. The 'B' grade offers a wider temperature coefficient tolerance compared to the 'A' grade. Consider the integrated temperature sensor if system monitoring is needed. Verify that the input voltage range meets the minimum dropout requirement of VOUT + 2V.

Part Context

This part belongs to the MAX6143 family of high-precision voltage references with temperature sensors. The family includes variants with different output voltages (+2.5V, +4.096V, +5.0V, +10V) and accuracy grades ('A' for 0.06%/3ppm/°C and 'B' for 0.1%/10ppm/°C). All variants share the same 8-pin SO package and core architecture.

Replacement Considerations

MAX6143AASA33+T offers higher precision (0.06% accuracy, 3ppm/°C TC) with identical pinout and functionality.

FAQ

Does the MAX6143BASA33+T require an output capacitor for stability?

No, the device does not require an output bypass capacitor for stability and is stable with capacitive loads up to 100µF.

How is the shutdown mode activated?

Shutdown is activated by connecting the SHDN pin to GND (logic-low), which reduces the supply current to 0.01µA.

What is the function of the TEMP pin?

The TEMP pin provides an output voltage proportional to the die temperature, making the device suitable for temperature-sensing applications.