LT581LH

Voltage Reference Overview

The LT581LH is a precision voltage reference integrated circuit manufactured by Analog Devices Inc. It provides a fixed output voltage of 10V and utilizes a series topology. The device is housed in a TO-5 metal can package with three pins, designed for through-hole mounting. Key electrical specifications include an initial accuracy of ±0.1%, a maximum output current of 10mA, and a maximum input voltage of 40V. Line regulation is specified at 0.005%/V, while load regulation is 500μV/mA. The unit operates within a temperature range of 0°C to +70°C and measures 9.4mm x 9.4mm x 4.7mm.

Voltage Reference Feature Summary

• Delivers a stable 10V reference output using a series regulator architecture.
• Features high initial accuracy of ±0.1% for precise measurement applications.
• Constructed in a durable TO-5 metal can package suitable for harsh environments.

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference sources
• High-accuracy data acquisition systems
• Calibration equipment requiring stable voltage standards

Voltage Reference Procurement Notes

Verify the specific suffix 'LH' against the official Analog Devices datasheet to confirm pinout compatibility and exact tolerance grades. Ensure the procurement channel provides traceability documentation for military or aerospace-grade components if required. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit products, as this component may be subject to obsolescence management protocols.

Voltage Reference Selection Notes

Select the LT581LH when a fixed 10V reference with ±0.1% initial accuracy is required in a TO-5 package. Consider the 10mA output current capability and 40V maximum input voltage limits during circuit design. Evaluate the 0.005%/V line regulation and 500μV/mA load regulation against system stability requirements. Confirm that the operating temperature range of 0°C to +70°C meets the environmental constraints of the target application.

Voltage Reference Part Context

The LT581LH belongs to the AD581/LT581 family of precision voltage references from Analog Devices. This series is known for providing stable, low-noise reference voltages in hermetically sealed metal packages. The LT581 variant typically denotes a specific grade or version within the broader AD581 product line, maintaining the core 10V output specification while potentially differing in testing or qualification standards compared to standard commercial versions.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify compatibility with AD581KH or AD581JH only if official cross-reference documentation confirms identical electrical and mechanical specifications.