LT1009CLP

Voltage Reference Overview

The LT1009CLP is a fixed shunt voltage reference integrated circuit manufactured by Texas Instruments. It provides a nominal output voltage of 2.5 V with an initial accuracy of ±0.2%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 25 PPM/°C. It requires a minimum operating current of 400 µA and supports a maximum shunt current of 10 mA. The component is housed in a TO-92-3 through-hole package.

Voltage Reference Feature Summary

• Provides a stable 2.5 V reference voltage with high initial accuracy
• Low temperature coefficient ensures stability across operating ranges
• Designed for low-power applications with minimal quiescent current requirements

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Battery-powered instrumentation requiring stable bias voltages
• Portable measurement devices needing low power consumption

Voltage Reference Procurement Notes

Verify the specific suffix 'CLP' corresponds to the commercial temperature grade (-40°C to +85°C) and TO-92-3 package configuration. Confirm RoHS compliance status as indicated in official documentation. Ensure compatibility with through-hole assembly processes given the leaded package type. Cross-reference manufacturer datasheets for exact electrical tolerances before integration.

Voltage Reference Selection Notes

Select this component when a fixed 2.5 V reference is required in a through-hole form factor. The ±0.2% initial accuracy suits precision applications. Consider the 400 µA minimum current constraint for battery life calculations. Compare against SOIC or TSSOP variants if surface mount space is available, noting that package selection does not alter electrical performance.

Voltage Reference Part Context

The LT1009 series represents a family of micro-power shunt voltage references originally developed by Linear Technology and now produced by Texas Instruments. These devices utilize bandgap reference technology to achieve low noise and high stability. The LT1009CLP specifically denotes the commercial grade version in a three-pin TO-92 package, distinguishing it from industrial grades or surface-mount alternatives like the CD or IPWR series.

Voltage Reference Replacement Considerations

LT1009CDR: Surface mount alternative in SOIC-8 package with identical electrical specifications. LT1009IDR: Higher precision variant in SOIC-8 package. LT1009IS8#PBF: Analog Devices equivalent in SOIC-8 with slightly different accuracy specs. Verify pinout compatibility when substituting surface mount parts for through-hole designs.