LT1634ACS8-1.25#TRPBF

Voltage Reference Overview

The LT1634ACS8-1.25#TRPBF is a micropower precision shunt voltage reference manufactured by Analog Devices Inc., featuring a fixed 1.25V 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. Packaged in an 8-lead plastic SO (S8) format, it is supplied in tape and reel configuration.

Voltage Reference Feature Summary

• Utilizes bandgap architecture with trimmed precision thin film resistors to achieve high initial voltage accuracy
• Incorporates improved curvature correction techniques to ensure minimal temperature drift across the operating range
• Designed for ultra-low power consumption suitable for battery-operated applications
• Capable of driving capacitive loads without requiring external output compensation capacitors

Voltage Reference Applications

• Portable meters and handheld instrumentation
• Precise analog-to-digital and digital-to-analog converter references
• Micropower precision regulators
• Calibrators and supervisory circuits

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 tape and reel packaging specifications. Ensure compliance with RoHS directives and check for any specific environmental or export control classifications relevant to the procurement region.

Voltage Reference Selection Notes

Select this component when a stable, low-drift voltage reference is required for commercial temperature environments. The 1.25V output is ideal for scaling lower voltage ranges in data acquisition systems. Consider the low operating current for extended battery life requirements and verify compatibility with the target PCB footprint for the 8-lead SO package.

Voltage Reference Part Context

This part belongs to the LT1634 family of micropower precision shunt voltage references. The series offers various output voltages including 1.25V, 2.5V, 4.096V, and 5V. The 'A' grade denotes superior performance characteristics compared to standard grades, specifically regarding temperature coefficient and initial accuracy. The family serves as a high-performance upgrade over legacy references like the LM185 or LT1004.

Voltage Reference Replacement Considerations

LT1634BCMS8-1.25#TRPBF

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 maximum temperature coefficient for the LT1634A grade?

The maximum temperature coefficient for the LT1634A grade is 10ppm/°C.