ISL21009DFB825Z-TK

Overview

The ISL21009DFB825Z-TK is a high-voltage input precision voltage reference from the FGA™ series, manufactured by Intersil (Renesas). It provides a fixed 2.5 V output with an initial accuracy of ±0.04% and a temperature coefficient of 3 ppm/°C. The device operates within an extended temperature range of -40°C to +125°C and supports a maximum input voltage of 36 V. Key electrical characteristics include a low noise performance of 22 µVrms in the 10 Hz to 10 kHz bandwidth and a maximum shunt current of 20 mA.

Feature Summary

• High-voltage input capability supporting up to 36 V for flexible system integration
• Low noise architecture ensuring signal integrity in sensitive measurement chains
• Precision stability with minimal drift over wide temperature variations

Applications

• Industrial process control systems requiring stable reference voltages
• Data acquisition systems demanding high accuracy analog-to-digital conversion
• Medical instrumentation utilizing precision sensor interfaces

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest documentation to confirm exact electrical tolerances and package variants. Ensure compatibility with existing board layouts regarding the SOIC-8 footprint. Cross-reference thermal management requirements for operation at the upper limits of the specified temperature range.

Selection Notes

Select this component when high input voltage tolerance and low noise are critical alongside standard precision accuracy. Compare against lower voltage input alternatives if system power rails do not exceed 18 V. Evaluate noise specifications against application sensitivity thresholds to ensure adequate signal-to-noise ratio.

Part Context

This part belongs to the ISL21009 series of FGA™ voltage references, designed for high-performance applications. The series offers various output voltages and accuracy grades. The DFB825Z variant specifically denotes the 2.5 V output version with defined tolerance and temperature coefficient parameters within the Renesas portfolio.

Replacement Considerations

ISL21009BFB825Z-TK: Verify if the B-series suffix indicates identical electrical specifications or minor parameter variations compared to the D-series.

FAQ

What is the maximum input voltage supported by this device?

The device supports a maximum series reference input voltage of 36 V.

What is the noise performance specification?

The typical noise density is 22 µVrms measured in the 10 Hz to 10 kHz frequency band.