LT1027DCH-5

Voltage Reference Overview

The LT1027DCH-5 is a precision 5V voltage reference in an obsolete 8-lead TO-5 metal can package. It provides a fixed output of 5.000V with a maximum temperature coefficient of 5ppm/°C and initial accuracy within ±0.05%. The device operates on a supply voltage between 8V and 40V, drawing approximately 3.1mA. It features low noise (less than 1µVp-p from 0.1Hz to 10Hz) and high transient response capability, sourcing 15mA and sinking 10mA.

Voltage Reference Feature Summary

• Ultra-low drift performance optimized for demanding accuracy requirements
• Fast settling output recovers quickly from load transients
• Proprietary advanced subsurface Zener bipolar process eliminates noise
• Includes dedicated noise reduction pin for filtering applications

Voltage Reference Applications

• A-to-D and D-to-A converter systems
• Digital voltmeters
• Precision current sources
• Reference standards

Voltage Reference Procurement Notes

Verify the H package designation carefully as this specific package type is marked obsolete in official documentation. Confirm that the supplier can provide genuine Analog Devices units rather than generic equivalents. Ensure the component meets the required military or industrial grade specifications if operating outside standard ranges.

Voltage Reference Selection Notes

Select this part when system accuracy requires less than 0.5LSB error contribution over wide temperature spans. It serves as a direct replacement for LT1021-5 and REF-02 in PDIP packages. Consider the NR pin for noise-sensitive designs requiring external filtering capacitors.

Voltage Reference Part Context

This component belongs to the LT1027 series of precision references designed for 12- to 16-bit data conversion systems. It replaces older heated substrate references by offering comparable stability without excessive power consumption. The series includes various accuracy grades and package options including SOIC and PDIP.

Voltage Reference Replacement Considerations

LT1021DIN8-10#PBF