LT1634AIS8-1.25#TRPBF

Voltage Reference Overview

The LT1634AIS8-1.25#TRPBF is a micropower precision shunt voltage reference manufactured by Analog Devices Inc., featuring a fixed output of 1.25V. It utilizes trimmed precision thin film resistors to achieve an initial voltage accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. The device operates with a low current consumption of 10µA and maintains stability with capacitive loads without requiring an external compensation capacitor. It is housed in an 8-lead plastic SO package and supports an industrial operating temperature range from -40°C to +85°C.

Voltage Reference Feature Summary

• Achieves high precision through the use of bandgap references and trimmed thin film resistors for stable performance.
• Provides excellent thermal stability with guaranteed low drift characteristics across the full operating temperature range.
• Operates efficiently at micropower levels, ensuring minimal energy consumption during continuous operation.
• Maintains dynamic impedance below 1Ω, allowing reliable functionality when connected to unregulated power supplies.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the component meets RoHS3 compliance standards for environmental regulations. Ensure the specified industrial temperature range aligns with the operational requirements of the target application environment before finalizing procurement decisions.

Voltage Reference Selection Notes

Select this specific part number when an industrial temperature range spanning from -40°C to +85°C is mandatory for the design. Choose this variant over commercial options if the application demands superior temperature drift specifications of 10ppm/°C rather than higher drift values. Consider this component for designs requiring surface mount integration within standard 8-lead plastic packages.

Voltage Reference Part Context

This component belongs to the LT1634 family of micropower precision shunt voltage references produced by Analog Devices Inc. The series offers various output voltages including 1.25V, 2.5V, 4.096V, and 5V. Different suffixes indicate variations in temperature grades and physical packaging formats such as MSOP, SO, and TO-92.

Voltage Reference Replacement Considerations

LT1634ACS8-1.25#TRPBF

Voltage Reference FAQ

Does the LT1634 require an external compensation capacitor?

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

What technology is used to achieve the initial voltage accuracy?

The device uses a bandgap reference combined with trimmed precision thin film resistors to achieve its specified accuracy.