LT1634CCZ-1.25#TRPBF

Voltage Reference Overview

The LT1634CCZ-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 ±0.20% and a maximum temperature coefficient of 25ppm/°C. The device operates within a commercial temperature range of 0°C to 70°C and is housed in a 3-lead plastic TO-92 package. It requires a minimum operating current of 7µA and supports a maximum reverse current of 100mA.

Voltage Reference Feature Summary

• Micropower operation with low quiescent current consumption
• High initial voltage accuracy using trimmed thin film resistors
• Low temperature drift for stable performance across temperature ranges
• Capable of driving capacitive loads without external compensation

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging, distinct from bulk tube variants like #PBF. Confirm the CC grade designation matches the required ±0.20% accuracy and 25ppm/°C drift specifications for your application. Ensure the TO-92 package form factor aligns with your board layout constraints.

Voltage Reference Selection Notes

Select this component when a shunt reference with moderate accuracy (±0.20%) is sufficient. The TO-92 package suits through-hole designs or lower-density layouts. For tighter accuracy requirements such as ±0.05%, consider the BC or AC grades available in SO-8 or MSOP packages instead.

Voltage Reference Part Context

This part belongs to the LT1634 family of micropower precision shunt voltage references. It serves as a high-performance alternative to older references like the LM185 or LT1004, offering guaranteed temperature drift and lower power consumption. The family includes various voltage outputs and package options to suit different design needs.

Voltage Reference Replacement Considerations

LT1634CCZ-1.25#PBF (Bulk Tube)

Voltage Reference FAQ

Does the LT1634 require an output compensation capacitor?

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

What is the dynamic impedance characteristic of this reference?

The LT1634 features less than 1Ω dynamic impedance, making it easy to use from unregulated supplies.