LT1021DCN8-7#PBF

Voltage Reference Overview

The LT1021DCN8-7#PBF is a precision shunt voltage reference manufactured by Analog Devices Inc. It provides a fixed nominal output of 7 V with an initial accuracy of ±0.05% and a temperature coefficient of 3 ppm/°C. The device operates within a supply voltage range of 11.5 V to 40 V and draws a maximum supply current of 1.5 mA. It features a maximum shunt current capability of 10 mA, allowing it to both source and sink load currents. The component is housed in an 8-pin PDIP package and is rated for operation between 0°C and +70°C.

Voltage Reference Feature Summary

• Ultra-low drift and noise characteristics ensure high stability
• Extremely good long-term stability performance
• Total immunity to input voltage variations

Voltage Reference Applications

• Strain gauge conditioners
• Ultraprecise current sources
• Negative series voltage references

Voltage Reference Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the operating temperature range matches the DC variant (0°C to +70°C) rather than the wider C variant (-40°C to +85°C). Ensure the 8-pin PDIP package fits the target PCB footprint. Cross-reference the manufacturer part number directly with official Analog Devices documentation to avoid counterfeit components.

Voltage Reference Selection Notes

Select this component when a stable 7 V reference is required with low drift specifications. The DC suffix denotes the commercial temperature range; choose the CIN8 variant if extended industrial temperatures are necessary. The shunt architecture requires a series resistor to limit current. Verify that the 10 mA output current capability meets the load requirements without exceeding thermal limits.

Voltage Reference Part Context

This part belongs to the LT1021 family of buried zener voltage references known for superior stability compared to standard bandgap references. The LT1021 series includes variants with different output voltages and temperature grades. The DCN8-7 designation specifically identifies the 7 V output version in the commercial grade PDIP package.

Voltage Reference Replacement Considerations

LT1021CIN8-7#PBF offers the same electrical specifications but with an extended -40°C to +85°C operating temperature range.