LT1009CPWG4

Voltage Reference Overview

The LT1009CPWG4 is a precision shunt voltage reference manufactured by Texas Instruments, delivering a nominal output of 2.5 V. It features 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 shunt current range from 400 µA to 10 mA. Packaged in an 8-pin TSSOP (PW) format, it integrates a bandgap reference circuit for stable performance across varying load conditions.

Voltage Reference Feature Summary

• Provides high-precision 2.5 V reference with tight initial tolerance
• Ensures thermal stability through low temperature coefficient design
• Operates efficiently over a wide industrial temperature range
• Supports variable load currents without external adjustment

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) references
• Digital-to-analog converter (DAC) voltage sources
• High-accuracy digital voltmeter circuits
• Current loop measurement systems

Voltage Reference Procurement Notes

Verify the specific suffix 'CPWG4' against official Texas Instruments documentation to confirm package type and compliance status. Ensure compatibility with existing PCB footprints for the TSSOP-8 configuration. Cross-reference lead times and lifecycle status directly with authorized distributors to avoid obsolescence risks during production.

Voltage Reference Selection Notes

Select this component when a fixed 2.5 V reference with ±0.2% accuracy is required. Consider the TSSOP-8 package for surface-mount assembly constraints. Evaluate the 25 PPM/°C drift against system thermal requirements. Confirm that the 400 µA minimum operating current aligns with the application's quiescent power budget.

Voltage Reference Part Context

Part of the LT1009 series of integrated reference circuits designed for high-precision applications. This family offers trimmed bandgap references suitable for replacing discrete zener diodes in demanding environments. The CPWG4 variant specifically denotes the commercial grade temperature range and TSSOP packaging.

Voltage Reference Replacement Considerations

LT1009CDR

Voltage Reference FAQ

What is the maximum shunt current for the LT1009CPWG4?

The maximum shunt current is 10 mA.

Does the LT1009CPWG4 require external trimming?

No, the device is internally trimmed to achieve its specified initial accuracy of ±0.2%.