LT1009CDRG4

Voltage Reference Overview

The LT1009CDRG4 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%. 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 cathode current of 400 µA and supports a maximum shunt current of 10 mA. The component is housed in an SOIC-8 surface-mount package.

Voltage Reference Feature Summary

• Provides a stable 2.5 V reference voltage with high initial accuracy
• Operates reliably across extended industrial temperature 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 circuits
• Portable measurement equipment requiring stable bias voltages

Voltage Reference Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's latest documentation, as it may indicate lead-free or RoHS compliance status. Confirm that the SOIC-8 package matches your PCB footprint requirements. Check the official datasheet for any updates regarding end-of-life notices or recommended replacement parts, as availability may vary by region.

Voltage Reference Selection Notes

Select this component when a fixed 2.5 V reference is required with tight initial tolerance. Ensure the design allows for at least 400 µA cathode current to maintain regulation. Verify that the operating environment stays within the specified -40°C to +85°C range. Consider thermal dissipation if the shunt current approaches the 10 mA maximum limit during operation.

Voltage Reference Part Context

This part belongs to the LT1009 series of micro power shunt voltage references. It is designed to replace older zener diodes in precision applications. The series offers various packages including SOIC, TSSOP, and TO-92. The LT1009CDRG4 specifically denotes the tape-and-reel version of the commercial grade device in an SOIC-8 package.

Voltage Reference Replacement Considerations

Consult the manufacturer's cross-reference guide for direct pin-compatible alternatives. Verify that any substitute maintains the 2.5 V output and similar temperature coefficient specifications.