ISL21009DFB841Z

Overview

The ISL21009DFB841Z is a precision, low-noise Floating Gate Analog (FGA) voltage reference IC manufactured by Intersil. It features a fixed output voltage of 4.096V with an initial accuracy tolerance of ±0.04%. The device operates within an input voltage range of 3.5V to 16.5V and draws a supply current of 180µA. Key performance metrics include a temperature coefficient of 3ppm/°C, a noise level of 4.5µVp-p from 0.1Hz to 10Hz, and a maximum output current of 7mA. It is housed in an 8-SOIC package and supports an operating temperature range of -40°C to 125°C.

Feature Summary

• Utilizes proprietary Floating Gate Analog (FGA) technology for high precision and stability
• Delivers low noise performance suitable for sensitive analog applications
• Provides fixed output voltage with tight initial accuracy tolerance
• Operates over a wide input voltage range and extended temperature spectrum

Applications

• High-resolution data acquisition systems
• Precision instrumentation circuits
• Medical equipment requiring stable reference voltages
• Industrial process control systems

Procurement Notes

Verify the specific suffix DFB841Z to confirm the 4.096V output variant, as the ISL21009 family includes other voltage options. Check Renesas or Intersil archives for current availability status, as older Intersil parts may be discontinued or subject to product change notices. Ensure compatibility with your PCB footprint for the 8-SOIC package. Confirm RoHS compliance requirements if applicable to your manufacturing standards.

Selection Notes

Select this component when a fixed 4.096V reference is required with ultra-low drift and noise characteristics. The FGA technology offers superior long-term stability compared to traditional bandgap references. Consider the 180µA supply current for power-sensitive designs. Ensure the input voltage remains within the 3.5V to 16.5V range for proper regulation. Evaluate the 7mA output drive capability against load requirements.

Part Context

The ISL21009 series belongs to Intersil's FGA™ voltage reference family, designed for high-precision applications. This specific part number denotes the 4.096V output version in an 8-SOIC package. Intersil was acquired by Renesas Electronics, so documentation and support are now managed under the Renesas portfolio. The series is known for combining low power consumption with high accuracy.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.