LH0070-0H#PBF

Overview

The LH0070-0H#PBF is a precision 10V series voltage reference IC manufactured by Analog Devices Inc. It features a buried Zener diode structure for ultralow drift and noise, with an output accuracy of ±0.1% at 25°C and a maximum temperature coefficient of 0.1%. The device operates within an input voltage range of 11.4V to 40V, drawing a quiescent current of up to 5mA while providing a fixed 10V output capable of sourcing or sinking 10mA. Key electrical specifications include 6µVp-p low-frequency noise (0.1Hz to 10Hz), >100dB ripple rejection, and long-term stability of ±0.2%/year. Packaged in a TO-39 metal can, it supports operation from -55°C to 125°C.

Feature Summary

• Ultralow drift performance utilizing a buried Zener diode structure that eliminates surface breakdown noise and stability issues.
• Operates in both series and shunt modes, allowing the output to source and sink current up to 10mA in series configuration.
• High immunity to input voltage variations with very low noise characteristics suitable for precision applications.
• Pin-compatible design enabling direct replacement for legacy AD581 and LH0070 components.

Applications

• A-to-D and D-to-A converters
• Precision regulators
• Digital voltmeters
• Inertial navigation systems
• Portable reference standards

Procurement Notes

Verify component authenticity through authorized distributors as this part may be discontinued. Confirm package integrity upon receipt, as the TO-39 metal can requires careful handling to prevent lead damage. Ensure environmental compliance documentation matches project requirements. Cross-reference datasheet revisions to confirm electrical parameters align with system specifications before finalizing procurement orders.

Selection Notes

Select this component when high precision and low drift are critical over wide temperature ranges. It is suitable for designs requiring a stable 10V reference without external trimming. Consider the TO-39 package constraints for thermal management and board space. Evaluate if the specific ±0.1% accuracy meets system error budgets compared to newer alternatives like the LT1031.

Part Context

The LH0070 series represents a class of precision three-terminal voltage references based on buried Zener technology. This architecture provides superior long-term stability and lower noise compared to standard bandgap references. The LH0070-0H variant specifically denotes the 10V output version with tight initial accuracy tolerances, designed for industrial and scientific instrumentation where reference stability is paramount.

Replacement Considerations

The LT1031 is documented as a plug-in replacement offering improved electrical and thermal performance. Verify pin compatibility and ensure the substitute meets or exceeds the required output voltage accuracy and temperature drift specifications for the specific application environment.