LT1009IPW

Voltage Reference Overview

The LT1009IPWR is a precision shunt voltage reference manufactured by Texas Instruments, featuring a nominal output of 2.5 V. It operates within a temperature range of -40°C to +85°C and offers an initial accuracy of 0.2%. The device supports a maximum shunt current of 10 mA with a minimum operating current of 400 uA. It exhibits a temperature coefficient of 25 PPM/°C and is housed in an 8-pin TSSOP package.

Voltage Reference Feature Summary

• Provides high-precision 2.5 V reference voltage via on-chip trimming
• Features low dynamic impedance for enhanced versatility
• Includes a third terminal allowing ±5% voltage adjustment

Voltage Reference Applications

• Pin-to-pin replacement for LM136 without external trim networks
• Calibration of system errors through adjustable reference voltage
• Precision analog circuitry requiring stable voltage references

Voltage Reference Procurement Notes

Verify the specific suffix (e.g., IPWR) against the manufacturer's datasheet to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for TSSOP-8 packages. Confirm RoHS compliance status as indicated in official documentation before procurement.

Voltage Reference Selection Notes

Select this component when a fixed 2.5 V reference with 0.2% initial accuracy is required. Consider the 25 PPM/°C temperature coefficient for thermal stability needs. Verify that the 10 mA maximum shunt current meets the load requirements of the target application circuit.

Voltage Reference Part Context

Part of the LT1009 series of precision trimmed shunt regulators. Designed to minimize initial voltage tolerance and temperature drift through internal calibration. Offers a versatile solution for applications needing stable, low-drift voltage references in compact surface-mount packages.

Voltage Reference Replacement Considerations

Can serve as a pin-to-pin replacement for the LM136, potentially eliminating the need for external trim networks. Verify electrical specifications match the original design requirements before substitution.