LH0070-0H

Overview

The LH0070-0H is a precision 10V voltage reference IC manufactured by Analog Devices Inc. It operates within an input voltage range of 11.4V to 40V and provides a fixed output accuracy of ±0.1% at 25°C. The device features ultralow drift with a maximum temperature coefficient of 5ppm/°C and exhibits very low noise, measuring 6µVP-P in the 0.1Hz to 10Hz frequency band. Designed for high stability, it offers long-term stability of ±0.2%/year and includes internal short-circuit protection. The component utilizes a buried Zener diode structure to minimize thermal regulation effects and hysteresis.

Feature Summary

• Operates in both series and shunt modes with output current sourcing and sinking capabilities
• Utilizes a buried Zener diode structure for superior noise reduction and time stability
• Features ultralow drift characteristics without requiring on-chip heaters
• Includes built-in short-circuit protection for indefinite operation under specific conditions

Applications

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

Procurement Notes

Verify the exact part number suffix against official manufacturer documentation before procurement. Confirm that the component meets all required electrical specifications for your specific application environment. Check for any obsolescence notices or recommended replacement parts from Analog Devices. Ensure compatibility with existing system designs if used as a direct replacement.

Selection Notes

Select this component when high precision and low drift are critical requirements. Consider the TO-39 metal can package for through-hole mounting applications. Evaluate the need for series versus shunt mode operation based on circuit topology. Assess thermal management needs given the package's thermal resistance characteristics. Verify input voltage ranges align with available power supplies.

Part Context

The LH0070 series represents a line of precision three-terminal voltage references. The LH0070-0H specifically denotes a grade with ±0.1% initial output accuracy. This family is designed to replace older discrete Zener-based references with integrated solutions offering better performance. The device is pin-compatible with other industry-standard references like the AD581.

Replacement Considerations

The LT1031 is documented as a plug-in replacement for the LH0070 with improved electrical and thermal performance.