LT1009IPWE4

Voltage Reference Overview

The LT1009IPWE4 is a precision shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 2.5 V. It is housed in an 8-pin TSSOP package and operates within a temperature range of -40°C to +85°C. The device offers an initial accuracy of 0.2% and a temperature coefficient of 25 ppm/°C. Maximum shunt current is 10 mA, with a minimum operating current of 400 µA.

Voltage Reference Feature Summary

• Precision on-chip trimming minimizes initial voltage tolerance and temperature drift for high stability.
• Integrated three-terminal design allows external adjustment of the reference voltage to calibrate system errors.
• Low dynamic impedance supports versatile operation across a wide range of load currents.

Voltage Reference Applications

• High-precision analog-to-digital converter (ADC) reference sources
• Data acquisition systems requiring stable voltage benchmarks
• Battery-powered instrumentation circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'E4' against the manufacturer's official documentation to confirm compliance status and material composition changes. Ensure the TSSOP-8 footprint matches the target PCB layout. Confirm availability through authorized distributors as lead times may vary based on production schedules.

Voltage Reference Selection Notes

Select this component when a 2.5 V reference with 0.2% initial accuracy is required in a surface-mount TSSOP-8 package. Consider the 25 ppm/°C temperature coefficient for thermal stability needs. Verify that the 10 mA maximum shunt current meets the circuit's power dissipation requirements.

Voltage Reference Part Context

This part belongs to the LT1009 series of precision shunt regulators. It serves as a direct replacement for older TO-92 packages like the LM136 in many applications, eliminating the need for external trim networks while maintaining similar performance characteristics in a compact integrated circuit format.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.