LT1009CLPR

Voltage Reference Overview

The LT1009CLPR is a 2.5-V integrated reference circuit manufactured by Texas Instruments, classified as a shunt voltage reference within the PMIC category. It operates with an initial accuracy of ±0.4% and features a temperature coefficient of 35 ppm/°C. The device supports a maximum shunt current of 10 mA and requires a minimum operating current of 400 µA. Designed for surface-mount installation, it utilizes an 8-SOIC package (0.154 inch width). The component functions reliably across a temperature range of -40°C to +85°C and complies with RoHS3 standards.

Voltage Reference Feature Summary

• Provides a stable 2.5-V fixed output voltage suitable for precision analog applications
• Delivers high initial accuracy of ±0.4% for precise measurement systems
• Operates efficiently with low minimum current consumption of 400 µA
• Supports high load currents up to 10 mA for driving external circuits

Voltage Reference Applications

• Precision data acquisition systems requiring stable reference voltages
• Analog-to-digital converter (ADC) reference inputs
• Battery-powered instrumentation due to low quiescent current
• Portable test equipment calibration circuits

Voltage Reference Procurement Notes

Verify the specific suffix CLPR corresponds to the 8-SOIC surface-mount package and commercial temperature grade (-40°C to +85°C). Confirm RoHS3 compliance status during sourcing. Ensure ordering quantities align with standard reel or cut-tape availability from authorized distributors. Cross-reference datasheet revision dates to guarantee parameter consistency with design requirements.

Voltage Reference Selection Notes

Select this component when a fixed 2.5-V reference is required in an 8-pin SOIC footprint. Compare against LM236-2.5 equivalents if pin compatibility is critical. Consider the 35 ppm/°C temperature coefficient for thermal stability needs. Verify that the 10 mA maximum shunt current meets the load drive requirements of the target application circuit without exceeding power dissipation limits.

Voltage Reference Part Context

The LT1009 series represents Texas Instruments' line of 2.5-V integrated reference circuits. The LT1009CLPR specifically denotes the commercial grade variant housed in an 8-SOIC package. This family serves as a foundational voltage reference solution for general-purpose power management and signal conditioning applications where moderate precision and compact packaging are prioritized over ultra-low drift specifications.

Voltage Reference Replacement Considerations

LM236-2.5 is a documented functional equivalent within the Texas Instruments portfolio offering similar 2.5-V shunt reference characteristics.