ISL21009BFB850ZS2568

Overview

The ISL21009BFB850ZS2568 is a high voltage input precision voltage reference utilizing Intersil's proprietary Floating Gate Analog (FGA) technology. It provides a fixed output voltage of 5.000V with an initial accuracy of ±0.5mV and a temperature coefficient of 3ppm/°C. The device operates within an input voltage range of 5.5V to 16.5V, drawing a maximum supply current of 180µA. It features low output noise of 4.5µV P-P in the 0.1Hz to 10Hz bandwidth and supports an output current capability of up to ±7.0mA. The component is housed in an 8-lead SOIC package and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Utilizes proprietary Floating Gate Analog technology for extremely low power consumption and minimal temperature drift.
• Provides high initial accuracy with guaranteed tolerance as tight as ±0.5mV at room temperature.
• Features ultra-low output noise performance suitable for sensitive analog signal chains.
• Includes a dedicated TRIM pin allowing user-adjustable output voltage variation.

Applications

• High resolution A/Ds and D/As
• Digital Meters
• Industrial and Instrumentation Equipment

Procurement Notes

Verify the specific ordering suffix against official documentation, as variations may indicate different packaging formats or material compositions. Confirm RoHS compliance status and check for any product change notices regarding lead times or availability. Ensure the selected variant matches the required initial accuracy grade and temperature coefficient specifications for the design.

Selection Notes

Select this component when designing systems requiring high DC precision combined with low quiescent current. The wide input voltage range accommodates various supply rails without complex regulation. Consider the thermal hysteresis and long-term stability characteristics if the application involves significant temperature cycling or requires extended operational life without recalibration.

Part Context

This part belongs to the ISL21009 FGA™ voltage reference family manufactured by Renesas Electronics Corporation. The series is designed for applications demanding superior stability and low noise. The specific model denotes the 5.000V output option with the highest accuracy grade available in the lineup.

Replacement Considerations

ISL21009CFB850Z

FAQ

How does the Floating Gate Analog technology impact the device's performance?

It enables extremely low supply current and very low temperature drift compared to traditional bandgap references, while maintaining high initial accuracy.

What is the function of the TRIM pin on the ISL21009?

The TRIM pin allows users to adjust the output voltage up or down by approximately 2.5% using an external potentiometer connected between VOUT and GND.