MAX6345SUT

Overview

The MAX6345SUT is a precision voltage reference integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It utilizes buried-zener technology to deliver low noise and high stability, making it suitable for demanding analog applications. The device operates within a supply voltage range of 2.7V to 18V and provides a fixed output voltage of 4.096V. It features an initial accuracy of ±0.02% and a maximum temperature coefficient of 1ppm/°C. The component is housed in a compact SOT-23-3 package and supports operation across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Utilizes buried-zener technology for ultra-low noise performance
• Provides industry-standard pinout for easy integration
• Offers excellent long-term stability with minimal drift over time

Applications

• High-resolution data conversion systems
• Precision industrial process control instrumentation
• High-accuracy reference standards

Procurement Notes

Verify the specific suffix 'SUT' against official manufacturer documentation to confirm the exact packaging type and tape-and-reel specifications. Ensure compatibility with existing board layouts regarding the SOT-23-3 footprint. Confirm that the 4.096V output aligns with system requirements before procurement.

Selection Notes

Select this component when a stable, low-noise reference is required for high-resolution ADC or DAC circuits. The buried-zener architecture ensures superior performance compared to bandgap references in sensitive applications. Consider the SOT-23-3 package size constraints and verify thermal dissipation capabilities within the intended operating environment.

Part Context

This part belongs to the MAX6325/MAX6341/MAX6350 family of low-noise voltage references. While sharing similar architectural benefits such as low temperature coefficients and high accuracy, the MAX6345 variant specifically targets the 4.096V output requirement. It serves as a critical reference element in precision measurement and signal conditioning chains.

Replacement Considerations

Direct substitutes include other parts from the same family offering different fixed voltages, such as the MAX6325 (2.5V) or MAX6350 (5V), provided the system design allows for voltage adjustment. Verify pinout compatibility and electrical specifications before substituting.