LT1004IZ-2.5#PBF

Voltage Reference Overview

The LT1004IZ-2.5#PBF is a micropower voltage reference manufactured by Analog Devices Inc., featuring a fixed output of 2.5V in a 3-lead plastic TO-92 package. It operates within an industrial temperature range of -40°C to +85°C with a guaranteed initial accuracy of ±20mV and a typical average temperature coefficient of 20ppm/°C. The device draws a minimum operating current of 10µA and supports up to 20mA shunt current, offering low dynamic impedance and wide-band noise performance suitable for precision applications.

Voltage Reference Feature Summary

• Provides high accuracy and excellent temperature characteristics at very low operating currents
• Features guaranteed initial accuracy and guaranteed temperature performance specifications
• Operates with a quiescent current as low as 10µA while supporting up to 20mA load current
• Designed as a pin-for-pin replacement for LM185/LM385 series references

Voltage Reference Applications

• Portable meter references
• Portable test instruments
• Battery-operated systems
• Current loop instrumentation
• Micropower cold junction compensation for thermocouples

Voltage Reference Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and standard tube packaging when ordering. Confirm that the IZ designation corresponds to the industrial temperature grade (-40°C to +85°C) and the Z package (TO-92). Ensure compatibility with existing circuit designs requiring a 2-terminal shunt reference before procurement.

Voltage Reference Selection Notes

Select this component for applications requiring a stable 2.5V reference with minimal power consumption. It is suitable for replacing older LM185/LM385 devices where improved accuracy is needed without increasing power dissipation. Consider the TO-92 package constraints for thermal management and board space requirements in portable designs.

Voltage Reference Part Context

This part belongs to the LT1004 family of micropower voltage references from Analog Devices. The family includes variants with different output voltages (1.2V, 2.5V) and packages (SO-8, TO-46). The LT1004 series is designed to offer high accuracy previously attainable only with selected units, optimizing key parameters through design and processing improvements.

Voltage Reference Replacement Considerations

LT1004 is explicitly documented as a pin-for-pin replacement for the LM185 and LM385 series references.