LT1009CPWR

Voltage Reference Overview

The LT1009CPWR is a precision shunt voltage reference manufactured by Texas Instruments, delivering a nominal output of 2.5 V with an initial accuracy of 0.2%. It operates within a temperature range of -40°C to +85°C and features a low temperature coefficient of 25 PPM/°C. The device supports a maximum shunt current of 10 mA and requires a minimum operating current of 400 uA for regulation. Packaged in an 8-pin TSSOP surface-mount format, it is designed for applications requiring stable reference voltages under varying thermal conditions.

Voltage Reference Feature Summary

• Provides a fixed 2.5 V output with high initial accuracy
• Maintains stability across extended industrial temperature ranges
• Operates efficiently with minimal quiescent current requirements

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) references
• Digital-to-analog converter (DAC) voltage standards
• Battery-powered instrumentation circuits

Voltage Reference Procurement Notes

Verify the specific suffix CPWR against official Texas Instruments documentation to confirm the TSSOP-8 package and commercial grade specifications. Ensure compatibility with standard surface-mount assembly processes. Cross-reference datasheet revisions to confirm pinout consistency and electrical parameter tolerances before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a compact surface-mount solution is required for 2.5 V reference applications. The TSSOP-8 package facilitates automated PCB assembly. Verify that the 400 uA minimum current requirement fits within the system's power budget and that the 25 PPM/°C drift meets the circuit's long-term stability needs.

Voltage Reference Part Context

The LT1009 series represents a family of micro-power shunt voltage references known for high precision and low cost. The LT1009CPWR specifically denotes the commercial temperature grade variant housed in a thin-shrink small-outline package. This part serves as a critical reference element in mixed-signal systems where accurate voltage thresholds are essential for reliable operation.

Voltage Reference FAQ

What is the minimum current required for the LT1009CPWR to regulate?

The device requires a minimum shunt current of 400 uA to maintain proper voltage regulation.

Does the LT1009CPWR support adjustable output voltages?

No, the LT1009CPWR provides a fixed 2.5 V output; adjustable versions typically carry different suffixes or model numbers.