LT1634BIS8-1.25#TRPBF

Voltage Reference Overview

The LT1634BIS8-1.25#TRPBF is a micropower precision shunt voltage reference manufactured by Analog Devices Inc., featuring a fixed output of 1.25V with an initial accuracy of ±0.05%. It operates within the industrial temperature range of –40°C to 85°C and exhibits a maximum temperature coefficient of 25ppm/°C. The device draws a minimum operating current of 7µA and maintains low dynamic impedance below 1Ω. Packaged in an 8-lead plastic SOIC (S8) format, it utilizes tape and reel delivery.

Voltage Reference Feature Summary

• Utilizes trimmed precision thin film resistors for high initial voltage accuracy
• Features improved curvature correction technique ensuring low temperature drift
• Capable of stable operation with capacitive loads without requiring output compensation

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the presence of the lead-free finish designation and ensure the tape and reel packaging aligns with automated assembly requirements. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and compliance specifications before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when low quiescent current and high precision are critical for battery-powered or energy-constrained applications. The industrial temperature rating makes it suitable for environments with significant thermal variations. Ensure the circuit design accommodates the minimum operating current requirement to maintain regulation stability during all operational states.

Voltage Reference Part Context

This component belongs to the LT1634 family of micropower precision shunt voltage references. It serves as a high-performance upgrade alternative to legacy devices such as the LM185, LM385, LT1004, and LT1034, offering superior power efficiency and guaranteed temperature drift characteristics while maintaining compatibility with standard shunt reference circuit topologies.

Voltage Reference Replacement Considerations

LT1634BCMS8-1.25#TRPBF

Voltage Reference FAQ

Does the LT1634 require an external capacitor for stability?

No, the LT1634 does not require an output compensation capacitor, although it remains stable when driving capacitive loads.

What technology is used to achieve the specified initial accuracy?

The bandgap reference uses trimmed precision thin film resistors to achieve the stated 0.05% initial voltage accuracy.