ISL21009BFB50ZR5314T

Overview

The ISL21009BFB50ZR5314T is a series voltage reference IC from Renesas Electronics, part of the FGA™ family. It provides a fixed 5V output 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. It features a maximum temperature coefficient of 3ppm/°C and supports an output current of 7 mA. Low-frequency noise is specified at 4.5µVp-p (0.1Hz to 10Hz) and 22µVrms (10Hz to 1kHz). The component is housed in an 8-SOIC package and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Ultra-low low-frequency noise performance for high-precision signal conditioning
• High DC accuracy with tight initial voltage tolerance
• Low supply current consumption for energy-efficient operation
• Wide operating temperature range suitable for industrial environments

Applications

• High-end instrumentation systems requiring stable reference voltages
• Data acquisition and processing applications demanding high DC precision
• Medical equipment utilizing precision analog front-ends
• Industrial process control systems with strict accuracy requirements

Procurement Notes

Verify authenticity carefully as this component is officially obsolete. Check manufacturing date codes against available stock sources. Confirm package integrity and pin alignment upon receipt. Ensure compliance with RoHS3 standards if required by your assembly specifications. Request detailed traceability documentation from suppliers to mitigate counterfeiting risks associated with end-of-life parts.

Selection Notes

Select this component when a fixed 5V reference with ±0.04% accuracy is required. Consider the 180µA supply current for power budgeting. Evaluate the 8-SOIC package constraints for PCB layout. Compare noise specifications against application needs. Verify input voltage compatibility within the 3.5V to 16.5V range. Assess thermal management requirements for the -40°C to +125°C operating range.

Part Context

This part belongs to the ISL21009 series of precision voltage references. It utilizes advanced bipolar technology to achieve sub-microvolt noise levels. The series offers multiple output voltage options including 1.25V, 2.5V, and 7.5V variants. The specific suffix indicates the 5V output version in tape and reel packaging. It is designed for surface-mount applications in compact electronic designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available for this obsolete component. Engineers should evaluate equivalent precision voltage references from other manufacturers. Verify matching electrical parameters such as accuracy, noise, and temperature coefficient. Ensure physical footprint compatibility with existing PCB layouts during transition planning.