LT1034IZ-2.5#TRPBF

Voltage Reference Overview

The LT1034IZ-2.5#TRPBF is a micropower dual voltage reference IC manufactured by Analog Devices Inc., housed in an 8-Lead SOIC package. It integrates a precision 2.5V shunt reference and a 7V auxiliary reference. The primary 2.5V output features a guaranteed temperature drift of 20 ppm/°C and an initial tolerance of 1%. Operating current is limited to 20µA, with a maximum cathode current of 30µA and a load current capability of 20mA. The device operates within a temperature range of -55°C to 125°C.

Voltage Reference Feature Summary

• Combines a precision thin-film bandgap reference with a subsurface zener auxiliary reference in a single compact package.
• Offers extremely low quiescent current consumption suitable for battery-powered applications.
• Provides low dynamic impedance for stable operation from unregulated power supplies.

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference sources
• Battery-operated instrumentation systems
• High-resolution data acquisition circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'IZ' against official manufacturer documentation to confirm the extended industrial temperature range (-55°C to 125°C), as standard variants may differ. Confirm that the '#TRPBF' designation indicates tape-and-reel packaging with lead-free compliance. Cross-reference the exact part number with the latest datasheet revision to ensure availability status and pinout compatibility before finalizing procurement plans.

Voltage Reference Selection Notes

Select this component when a dual-output reference is required within a strict micropower budget. The 2.5V output provides high accuracy for sensitive measurement tasks, while the 7V auxiliary output can serve biasing or level-shifting needs. Ensure the application requires the specific 20ppm/°C drift characteristic and that the 8-pin SOIC footprint fits the design constraints.

Voltage Reference Part Context

This part belongs to the LT1034 family of micropower dual references. It shares the core architecture with other LT1034 variants but differs in package type and temperature rating. The 'I' grade typically denotes industrial temperature performance, while the 'Z' suffix often specifies the extended temperature range in Linear Technology nomenclature.

Voltage Reference Replacement Considerations

LT1034IS8-2.5#TRPBF: Direct functional substitute with identical electrical specifications but packaged in SO-8 instead of SOIC-8. Verify mechanical footprint differences during replacement.

Voltage Reference FAQ

What is the difference between the 2.5V and 7V outputs?

The 2.5V output is a trimmed, thin-film bandgap reference with high precision and low drift. The 7V output is a subsurface zener device intended for less demanding auxiliary applications.

Can the LT1034 operate from unregulated supplies?

Yes, the low dynamic impedance of the reference allows it to be used easily from unregulated power supplies.