LT1634BCMS8-2.5#PBF

Voltage Reference Overview

The LT1634BCMS8-2.5#PBF is a micropower precision shunt voltage reference manufactured by Analog Devices Inc., housed in an 8-lead plastic MSOP package. It provides a fixed output voltage of 2.5V with an initial accuracy of ±0.05%. The device operates within a commercial temperature range of 0°C to +70°C and features a maximum temperature coefficient of 25ppm/°C. It requires a minimum operating current of 8µA and supports a maximum cathode current of 50mA.

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
• Designed for micropower operation with minimal static current consumption
• Capable of stable performance with capacitive loads without requiring external compensation

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and tube packaging when sourcing. Confirm the BC grade designation matches the required 25ppm/°C temperature coefficient and 0°C to +70°C operating range. Ensure the MSOP package type aligns with the PCB footprint requirements. Cross-reference the manufacturer part number against official Analog Devices documentation to validate authenticity and specifications.

Voltage Reference Selection Notes

Select this component when a precise, low-power shunt reference is needed for commercial applications. The 2.5V output suits systems requiring higher resolution than 1.25V references. The MSOP package offers a compact solution for space-constrained designs. Verify that the 50mA maximum cathode current meets the load requirements and that the 25ppm/°C drift specification satisfies the system's thermal stability needs.

Voltage Reference Part Context

This part belongs to the LT1634 family of micropower precision shunt voltage references. The 'B' grade specifies a 25ppm/°C temperature coefficient, while the 'C' indicates the commercial temperature range. The 'MS8' denotes the 8-lead MSOP package, and the '-2.5' identifies the 2.5V output version. This series serves as a high-performance upgrade to older LM185/LM385 and LT1004/LT1034 devices.

Voltage Reference Replacement Considerations

LT1634BCS8-2.5#PBF (SO-8 package variant)

Voltage Reference FAQ

Does the LT1634BCMS8-2.5#PBF require an output compensation capacitor?

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

What is the maximum cathode current for the 2.5V version?

The maximum cathode current for the LT1634BCMS8-2.5#PBF is 50mA.