LH0070-2H

Overview

The LH0070-2H is a precision 10V series voltage reference IC manufactured by Analog Devices Inc. It utilizes a buried Zener diode structure to achieve ultralow drift and noise, offering excellent long-term stability and immunity to input voltage variations. The device operates in both series and shunt modes, sourcing and sinking up to 10mA. Key electrical specifications include an output accuracy of ±0.05% at 25°C, a temperature coefficient of ±0.04%, line regulation of 0.03%, and load regulation of 0.03%. It features a minimum input voltage of 11.4V, quiescent current of 5mA, and operates within a temperature range of -55°C to 125°C.

Feature Summary

• Buried Zener diode structure for low noise and high stability
• Capable of operating in both series and shunt configurations
• Output stage supports both sourcing and sinking currents
• Pretrimmed output voltage for high initial accuracy

Applications

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

Procurement Notes

Verify the specific suffix '2H' against official documentation to confirm the exact accuracy grade and temperature coefficient parameters. Confirm package type and pinout compatibility with existing designs. Check for obsolescence status or lifecycle notices from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when ultralow drift and noise are critical requirements for high-precision measurement systems. Consider the TO-39 metal can package for thermal management and shielding needs. Evaluate the need for series versus shunt mode operation based on system power constraints and load characteristics.

Part Context

The LH0070 series is a legacy precision reference originally developed by National Semiconductor and later acquired by Linear Technology, now part of Analog Devices. It serves as a high-performance alternative to standard bandgap references, utilizing buried Zener technology for superior stability and lower noise profiles in demanding analog applications.

Replacement Considerations

The LT1031 is documented as a pin-compatible replacement for the LH0070 series with improved electrical performance.