LT1009IDR

Voltage Reference Overview

The LT1009IDR is a shunt voltage reference integrated circuit manufactured by Texas Instruments. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.2% and a temperature coefficient of 25 ppm/°C. The device operates within a junction temperature range of -40°C to +85°C and supports a maximum shunt current of 10 mA, with a minimum operating current of 400 µA. It is housed in an 8-pin SOIC surface-mount package.

Voltage Reference Feature Summary

• Provides a stable 2.5 V reference output suitable for precision analog circuits
• Features low temperature drift characteristics for consistent performance across varying thermal conditions
• Designed for shunt regulation applications requiring high initial accuracy

Voltage Reference Applications

• Precision data acquisition systems
• Analog-to-digital converter (ADC) reference inputs
• Digital-to-analog converter (DAC) reference sources
• Battery-powered instrumentation requiring stable bias voltages

Voltage Reference Procurement Notes

Verify the specific suffix 'IDR' corresponds to the SOIC-8 tape-and-reel packaging configuration. Confirm that the ±0.2% accuracy grade meets the design requirements, as other grades may exist within the LT1009 family. Ensure the operating environment remains within the specified -40°C to +85°C temperature range to maintain guaranteed performance specifications.

Voltage Reference Selection Notes

Select this component when a fixed 2.5 V reference is required in a compact surface-mount form factor. The 8-pin SOIC package facilitates automated assembly processes. Consider the 400 µA minimum operating current constraint to ensure proper regulation during low-load conditions. Verify that the 10 mA maximum shunt current capability aligns with the power dissipation limits of the target application.

Voltage Reference Part Context

The LT1009 series belongs to Texas Instruments' portfolio of precision voltage references. This specific part represents the industrial temperature grade version packaged for high-volume surface-mount production. It serves as a foundational component for establishing accurate voltage baselines in mixed-signal electronic designs.

Voltage Reference Replacement Considerations

LT1009CD: Identical electrical specifications but supplied in tube packaging instead of reel format.