LT1634ACS8-5#PBF

Voltage Reference Overview

The LT1634ACS8-5#PBF is a micropower precision shunt voltage reference manufactured by Analog Devices Inc. It provides a fixed 5V output with an initial accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. The device operates at a low current of 10µA and features less than 1Ω dynamic impedance. It is housed in an 8-lead plastic SO package and supports commercial operating temperatures from 0°C to 70°C.

Voltage Reference Feature Summary

• Utilizes trimmed precision thin film resistors for high initial voltage accuracy
• Incorporates improved curvature correction techniques to ensure low temperature drift
• Operates stably with capacitive loads without requiring external compensation capacitors

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish compliance. Confirm the S8 package designation matches the required footprint. Ensure the 'A' grade selection aligns with the necessary 10ppm/°C temperature coefficient specifications for the target application environment.

Voltage Reference Selection Notes

Select this component when upgrading from older references like LM185 or LT1004 where lower power consumption and guaranteed temperature drift are critical requirements. Consider the 10µA operating current for battery-powered designs and verify that the 5V output level suits the system architecture.

Voltage Reference Part Context

This part belongs to the LT1634 family of micropower precision shunt voltage references. The family includes variants with different output voltages (1.25V, 2.5V, 4.096V) and packages (MSOP, TO-92). The 'A' suffix denotes the tighter 10ppm/°C temperature coefficient compared to the standard 'B' grade.

Voltage Reference Replacement Considerations

LT1634BCS8-5#PBF offers similar functionality with a 25ppm/°C temperature coefficient.