ISL21009CFB812Z

Overview

The ISL21009CFB812Z is a high voltage input precision voltage reference from the FGA™ series, manufactured by Intersil (Renesas). It provides a fixed output voltage of 1.25V with an initial accuracy of ±0.5mV. The device operates within an input voltage range of 3.5V to 16.5V and features low output voltage noise of 4.5µVP-P in the 0.1Hz to 10Hz band. Supply current is limited to 180µA maximum, while the temperature coefficient is specified at 3ppm/°C. It supports an output current capability of up to ±7.0mA and functions reliably across an operating temperature range of -40°C to +125°C in an 8-lead SOIC package.

Feature Summary

• Delivers high DC precision with an initial accuracy of ±0.5mV for stable reference performance.
• Achieves ultra-low noise characteristics with 4.5µVP-P output noise in the 0.1Hz to 10Hz frequency range.
• Supports wide input voltage operation from 3.5V to 16.5V for flexible power supply integration.
• Maintains stability over extended industrial temperatures (-40°C to +125°C) with a low temperature coefficient.

Applications

• High resolution analog-to-digital and digital-to-analog converters
• Precision digital meters and instrumentation equipment
• Battery management and monitoring systems

Procurement Notes

Verify the specific suffix 'CFB812Z' against official Renesas documentation to confirm the exact output voltage and tolerance grade. Ensure compatibility with the 8-lead SOIC package dimensions and thermal requirements for your design. Check for end-of-life notices or product change notifications regarding this specific part number before finalizing procurement plans.

Selection Notes

Select this component when designing circuits requiring sub-millivolt accuracy and minimal low-frequency noise. The wide input voltage range allows use in systems with varying supply rails. Consider the ±7.0mA output drive capability for direct sensor powering or buffer driving without additional amplification stages.

Part Context

This part belongs to the ISL21009 family of FGA™ voltage references, designed for high-performance signal chain applications. It utilizes advanced bipolar technology to achieve superior noise and drift specifications compared to standard bandgap references. The series includes various output voltage options to suit different precision measurement needs.

Replacement Considerations

Consult official substitution guides for equivalent parts within the ISL21009 family or compatible Renesas voltage references. Verify pinout compatibility and electrical parameter equivalence before replacing the component in existing designs.