LT1634BCS8-2.5#PBF

Voltage Reference Overview

The LT1634BCS8-2.5#PBF is a micropower precision shunt voltage reference with a fixed 2.5V output. It features ±0.05% initial voltage accuracy and a maximum temperature coefficient of 25ppm/°C. The device operates at a minimum current of 8µA and exhibits low dynamic impedance below 1Ω. It is housed in an 8-lead SOIC package and supports a commercial operating temperature range from 0°C to 70°C.

Voltage Reference Feature Summary

• Achieves high precision through trimmed thin film resistors for stable bandgap reference performance
• Ensures stability with capacitive loads without requiring external output compensation capacitors
• Provides low dynamic impedance for reliable operation 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 the specific suffix #PBF indicates lead-free finish and tube packaging configuration. Confirm the BC grade designation aligns with the required 25ppm/°C temperature coefficient and commercial temperature range specifications. Ensure the SOIC-8 package dimensions match the target PCB footprint requirements before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when low quiescent current and high initial accuracy are critical design constraints. The 2.5V output is suitable for driving ADC references or providing stable bias voltages. Consider the 25ppm/°C drift specification against application thermal variations. This part serves as a direct upgrade for legacy LM185/LM385 applications requiring lower power consumption.

Voltage Reference Part Context

This component belongs to the LT1634 family of micropower precision shunt voltage references. The family offers various output voltages including 1.25V, 4.096V, and 5V across different packages like MSOP and TO-92. The LT1634 series is designed to replace older reference standards while offering improved curvature correction and guaranteed temperature drift performance.

Voltage Reference Replacement Considerations

LT1634ACS8-2.5#PBF

Voltage Reference FAQ

Does the LT1634BCS8-2.5 require an output capacitor for stability?

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

What is the minimum operating current for the 2.5V version?

The minimum operating current for the LT1634BCS8-2.5 is 8µA.