LT1034BIZ-1.2#PBF

Voltage Reference Overview

The LT1034BIZ-1.2#PBF is a micropower, precision dual voltage reference IC manufactured by Analog Devices Inc. It integrates a trimmed, thin-film band-gap reference and an auxiliary Zener reference in a single TO-92-3 package. The primary output provides a fixed voltage of 1.225 V with an initial accuracy of ±1.2%. An auxiliary output delivers a stable 7 V reference. The device operates within a temperature range of -40°C to +85°C and supports a maximum shunt current of 20 mA.

Voltage Reference Feature Summary

• Integrates two distinct voltage references: a precision band-gap and an auxiliary Zener source on a single chip.
• Utilizes thin-film trimming technology to achieve high initial accuracy and low temperature drift.
• Designed for micropower applications, offering efficient performance in space-constrained through-hole packages.

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) excitation circuits
• Battery-powered instrumentation requiring stable bias voltages

Voltage Reference Procurement Notes

Verify the specific suffix 'BIZ' against the official Analog Devices datasheet to confirm the exact tolerance grade and temperature range specifications. Ensure the TO-92-3 through-hole package aligns with the target PCB footprint requirements. Cross-reference the manufacturer part number with authorized distributors to confirm current availability status and authenticity before procurement.

Voltage Reference Selection Notes

Select this component when a design requires two independent, stable voltage rails from a single compact package. The dual-output capability simplifies board layout compared to using separate discrete references. Consider the ±1.2% initial accuracy and thermal stability limits to ensure they meet the system's error budget constraints for precision measurement applications.

Voltage Reference Part Context

This part belongs to the LT1034 series, which combines a buried Zener reference with a band-gap reference. The series is known for ultra-low drift characteristics. The 'I' suffix typically denotes industrial temperature range, while 'Z' indicates the specific package type. This integration allows designers to reduce component count and board space in high-precision power management systems.

Voltage Reference Replacement Considerations

LT1034CZ-1.2#PBF offers similar functionality but may differ in initial accuracy and temperature coefficient specifications. Verify that the alternative part meets the required ±1.2% tolerance and operating temperature range (-40°C to +85°C). Ensure pin compatibility and package dimensions match the existing design constraints.