LT1634BCMS8-1.25

Voltage Reference Overview

The LT1634BCMS8-1.25 is a micropower precision shunt voltage reference manufactured by Analog Devices, formerly Linear Technology. It provides a fixed output voltage of 1.25 V with an initial accuracy of ±0.05%. The device operates within a temperature range of 0°C to +70°C and features a low temperature coefficient of 25 ppm/°C. It is housed in an 8-pin MSOP package and supports a maximum shunt current of 20 mA.

Voltage Reference Feature Summary

• Utilizes trimmed precision thin-film resistors for high initial voltage accuracy
• Designed for micropower applications with low quiescent current consumption
• Provides stable shunt regulation suitable for sensitive analog circuits

Voltage Reference Applications

• Single cell lithium-ion battery supervisory circuits
• Reference voltage generation for dual-channel digital-to-analog converters
• Portable instrumentation requiring precise voltage standards

Voltage Reference Procurement Notes

Verify the manufacturer designation as Analog Devices Inc., noting that Linear Technology is the historical brand name associated with this component series. Confirm the specific suffix indicates the MSOP package and 1.25V output variant. Ensure compliance with RoHS directives and check for any specific handling requirements related to surface-mount installation.

Voltage Reference Selection Notes

Select this component when a compact, low-power shunt reference is required for portable or battery-operated systems. The 1.25V output is ideal for interfacing with ADCs and DACs that require a stable internal reference. Consider the ±0.05% tolerance for applications demanding high precision without external trimming capabilities.

Voltage Reference Part Context

This part belongs to the LT1634 family of micropower precision shunt voltage references. The family includes various output voltages and package options, such as SOIC and MSOP. The LT1634 series is characterized by its use of bandgap technology with thin-film resistors to achieve superior stability and low noise performance compared to standard zener references.

Voltage Reference Replacement Considerations

Compatible substitutes include other parts from the LT1634 family with different voltage outputs or packages, such as LT1634BCS8-5. Verify pinout compatibility and thermal characteristics before substitution.