LT1009IPWRG4

Voltage Reference Overview

The LT1009IPWRG4 is a precision 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%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 25 PPM/°C. Designed for surface-mount applications, it is housed in an 8-pin TSSOP package. The circuit supports a maximum shunt current of 10 mA and requires a minimum operating current of 400 uA to maintain regulation.

Voltage Reference Feature Summary

• Provides a stable 2.5 V reference voltage with high initial accuracy
• Low temperature coefficient ensures consistent performance across operating ranges
• Integrated shunt topology suitable for compact surface-mount designs

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Battery-powered instrumentation requiring low power consumption
• Portable measurement equipment calibration circuits

Voltage Reference Procurement Notes

Verify the specific suffix G4 indicates RoHS compliance and lead-free construction as per Texas Instruments standards. Confirm the TSSOP-8 package availability matches your PCB footprint requirements. Ensure the 0.2% accuracy grade meets your system tolerance specifications before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a fixed 2.5 V reference is required with tight initial accuracy. The 25 PPM/°C temperature coefficient makes it suitable for applications where thermal stability is critical. Consider the 10 mA maximum shunt current capability to ensure adequate headroom for load variations while maintaining regulation within specified limits.

Voltage Reference Part Context

This part belongs to the LT1009 series of micro-power voltage references from Texas Instruments. The series includes various packages such as SOIC and TO-92, offering flexibility for different form factors. The IPWRG4 variant specifically denotes the TSSOP-8 surface-mount package with green (RoHS compliant) manufacturing attributes.

Voltage Reference Replacement Considerations

LT1009IDR: SOIC-8 package variant with potentially different accuracy grades. LT1009CDR: Commercial grade version with limited temperature range. LT1009ILP: TO-92 through-hole package alternative.