LT1034CZ-2.5#PBF

Voltage Reference Overview

The LT1034CZ-2.5#PBF is a micropower dual voltage reference from Analog Devices, housed in a TO-92-3 package. It integrates a precision 2.5V band-gap reference with an auxiliary 7V zener reference. The primary output features a guaranteed initial accuracy of ±1% and a temperature coefficient of 20 ppm/°C. Operating current is typically 20 µA, with a maximum shunt current of 20 mA. The device supports an input voltage up to 15 V and operates within a commercial temperature range of 0°C to +70°C.

Voltage Reference Feature Summary

• Integrates a trimmed thin-film band-gap reference with a subsurface zener auxiliary reference
• Provides low dynamic impedance for stable operation from unregulated supplies
• Delivers high long-term stability with minimal temperature cycling hysteresis

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference sources
• Data acquisition system calibration
• Portable instrumentation power management
• Low-power sensor signal conditioning circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'CZ' indicates the TO-92-3 through-hole package variant rather than the SOIC surface-mount version. Confirm that the '#PBF' designation ensures compliance with lead-free manufacturing standards required by your assembly process. Cross-reference the manufacturer part number against official Analog Devices documentation to ensure compatibility with existing board layouts and thermal requirements.

Voltage Reference Selection Notes

Select this component when a compact through-hole solution is required for dual-voltage applications. The 20 ppm/°C drift specification suits moderate precision environments where space constraints preclude larger packages. Consider the 20 µA quiescent current for battery-operated designs, while ensuring the load current remains within the 2 mA to 20 mA operational window for optimal regulation performance.

Voltage Reference Part Context

This part belongs to the LT1034 series of micropower references, designed to replace older discrete zener diode configurations. It consolidates two distinct reference functions into a single semiconductor die, reducing board area and improving matching characteristics compared to separate components. The series is widely utilized in industrial control and measurement systems requiring reliable, low-drift voltage standards.

Voltage Reference Replacement Considerations

LT1034BCZ-2.5#PBF