LT1021DCH-5

Voltage Reference Overview

The LT1021DCH-5 is a precision voltage reference featuring an ultralow drift of 5ppm/°C maximum slope and very low noise. It provides a nominal output voltage of 5V with an initial tolerance of ±0.05%. The device utilizes a buried zener diode structure for excellent long-term stability and immunity to input voltage variations. It operates in series mode, sourcing or sinking up to 10mA, and requires a minimum input/output differential of 1V. The component is housed in an 8-lead plastic SO (S8) package.

Voltage Reference Feature Summary

• Ultralow temperature drift and noise characteristics
• Buried zener diode architecture for superior stability
• Capable of sourcing and sinking up to 10mA load current

Voltage Reference Applications

• A/D and D/A converters
• Precision regulators
• Digital voltmeters
• Inertial navigation systems
• Portable reference standards

Voltage Reference Procurement Notes

Verify the specific suffix 'DCH' against official documentation to confirm the exact grade, operating temperature range, and package type. Ensure compatibility with system requirements regarding thermal resistance and lead configuration. Confirm availability status as supply conditions may vary by region.

Voltage Reference Selection Notes

Select this component when high accuracy and stability are required over varying temperatures. Consider the 5V output option for systems needing precise scaling. Evaluate the S8 package suitability for PCB space constraints. Verify that the minimum input/output differential requirement fits within the available supply headroom.

Voltage Reference Part Context

The LT1021 family represents a line of precision references designed for applications demanding minimal drift and noise. Based on a buried zener structure, these devices offer performance comparable to higher-power heater-based references without the associated power consumption. The family includes 5V, 7V, and 10V variants in various packages.

Voltage Reference Replacement Considerations

LT1021BCH-5

Voltage Reference FAQ

Does the LT1021-5 require a trim pin connection?

Yes, the LT1021-5 has a trim pin. To maintain optimal temperature coefficient during trimming, external circuitry such as resistors R1 and R2 should be used to drive the pin.

What is the recommended capacitive loading for transient response?

For optimum settling with load transients, output capacitance should be under 1000pF. In critical applications, a 10µF solid tantalum capacitor with series resistance is suggested.