LT1634BIS8-2.5#PBF

Voltage Reference Overview

The LT1634BIS8-2.5#PBF is a micropower precision shunt voltage reference manufactured by Analog Devices Inc., featuring a fixed 2.5V output. It utilizes trimmed precision thin film resistors to achieve an initial voltage accuracy of ±0.05% and a maximum temperature coefficient of 25ppm/°C. The device operates within the industrial temperature range of –40°C to +85°C and is housed in an 8-lead plastic SO package.

Voltage Reference Feature Summary

• Utilizes bandgap reference technology with trimmed precision thin film resistors for high accuracy
• Provides low operating current suitable for battery-powered applications
• Features less than 1Ω dynamic impedance for stability with unregulated supplies
• Does not require an external output compensation capacitor

Voltage Reference Applications

• Portable meters
• Precision regulators
• A/D and D/A converters
• Calibrators

Voltage Reference Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required package type and temperature grade. Check for lead-free finish compliance if RoHS standards are mandatory for the assembly process. Ensure proper ESD handling precautions are observed during storage and installation.

Voltage Reference Selection Notes

Select this part when a stable, low-drift reference is needed for industrial environments. The 2.5V output suits systems requiring intermediate reference levels. Verify that the 25ppm/°C drift meets system thermal requirements. Consider the 8-pin SO package dimensions for PCB layout constraints compared to MSOP alternatives.

Voltage Reference Part Context

This component belongs to the LT1634 family of micropower precision shunt voltage references. It serves as a high-performance upgrade to older references like the LM185/LM385, offering lower power consumption and guaranteed temperature drift characteristics across the full operating range.

Voltage Reference Replacement Considerations

LT1634AIS8-2.5#PBF (Commercial Temperature Range)

Voltage Reference FAQ

Is an output compensation capacitor required?

No, the LT1634 does not require an output compensation capacitor but remains stable with capacitive loads.

What is the minimum operating current?

The minimum operating current is 8µA at an IR of 10µA.