ISL21009BFB825Z

Overview

The ISL21009BFB825Z is a high voltage input precision voltage reference utilizing Intersil's proprietary Floating Gate Analog (FGA) technology. It provides a fixed output voltage of 2.500V with an initial accuracy of ±0.5mV and a temperature coefficient of 3ppm/°C. The device operates within an input voltage range of 3.5V to 16.5V, consuming a maximum supply current of 180µA. Output noise is specified at 4.5µVP-P from 0.1Hz to 10Hz. It supports up to ±7.0mA output current capability and functions in temperatures ranging from -40°C to +125°C.

Feature Summary

• Utilizes proprietary Floating Gate Analog technology for extremely low power consumption and minimal temperature drift.
• Delivers high DC precision with guaranteed initial accuracy as low as ±0.5mV.
• Features ultra-low output voltage noise of 4.5µVP-P in the 0.1Hz to 10Hz bandwidth.

Applications

• High Resolution A/Ds and D/As
• Digital Meters
• Battery Management/Monitoring
• Industrial/Instrumentation Equipment

Procurement Notes

Verify component authenticity through authorized Renesas or Intersil distributors. Confirm RoHS compliance status and package integrity upon receipt. Review datasheet FN6327.7 for handling procedures regarding electrostatic discharge sensitivity. Ensure storage conditions align with manufacturer specifications to maintain long-term stability and accuracy parameters.

Selection Notes

Select this component when design requirements demand high precision combined with low quiescent current. The wide input voltage range accommodates various supply rails without complex regulation. Consider the specific trim pin functionality if output adjustment flexibility is required. Evaluate thermal management needs given the SOIC package constraints and potential post-reflow voltage shifts.

Part Context

This part belongs to the ISL21009 FGA™ voltage reference family, manufactured by Intersil Americas Inc., now part of Renesas Electronics Corporation. The series includes variants with different output voltages and accuracy grades. The BFB825Z suffix denotes the 2.5V output option with the highest precision grade available in this specific product line.

Replacement Considerations

ISL21009CFB825Z

FAQ

How does the TRIM pin function on the ISL21009?

The TRIM pin allows the user to adjust the output voltage up or down by approximately 2.5%. This is achieved by connecting a potentiometer between VOUT and GND, with the wiper connected to the TRIM pin.

What are the board mounting considerations for this device?

To maintain accuracy, place the device near the edge of the PCB or on the shortest side where bending stress is minimized. Avoid areas subject to twisting, as plastic packaging can cause die stress that degrades reference voltage accuracy.