LT1634ACS8-2.5#TRPBF

Voltage Reference Overview

The LT1634ACS8-2.5#TRPBF is a micropower precision shunt voltage reference manufactured by Analog Devices Inc., featuring a fixed 2.5V output with ±0.05% initial accuracy and a maximum temperature coefficient of 10ppm/°C. It operates within the commercial temperature range of 0°C to 70°C, drawing a typical operating current of 10µA. The device utilizes trimmed precision thin film resistors for curvature correction and exhibits low dynamic impedance below 1Ω. It is housed in an 8-lead plastic SO package and is supplied in tape and reel format.

Voltage Reference Feature Summary

• Achieves high precision through bandgap technology utilizing trimmed precision thin film resistors
• Ensures stable operation without requiring an external output compensation capacitor
• Maintains stability when driving capacitive loads directly
• Provides low dynamic impedance suitable for use with unregulated power supplies

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 procurement channel provides valid manufacturer documentation. Cross-reference the part marking code against official datasheet tables to validate authenticity before integration into production designs.

Voltage Reference Selection Notes

Select this component when a fixed 2.5V reference is required with tight initial accuracy and low drift specifications. It serves as a direct upgrade for legacy references like the LM185 or LT1034 where lower power consumption and guaranteed temperature performance are critical design constraints.

Voltage Reference Part Context

This part belongs to the LT1634 family of micropower precision shunt voltage references. The 'A' grade indicates superior temperature coefficient performance compared to the 'B' grade. The 'S8' suffix denotes the 8-lead plastic SO package variant, while the '#TRPBF' suffix specifies the tape and reel packaging configuration with lead-free finish.

Voltage Reference Replacement Considerations

LT1634ACS8-2.5#PBF (Tube Packaging)

Voltage Reference FAQ

Does the LT1634 require an external capacitor for stability?

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

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

The minimum operating current for the LT1634ACS8-2.5 is typically 8µA.