ISL21090BFB850Z-TK

Overview

The ISL21090BFB850Z-TK is a precision voltage reference from the ISL21090 series, manufactured by Renesas Electronics Corporation. It provides a fixed output voltage of 5.0V with an initial accuracy of ±0.025%. The device utilizes advanced bipolar technology to achieve ultra-low noise performance, specifically 1.0µV p-p typical in the 0.1Hz to 10Hz frequency range. It operates within a supply voltage range of 3.7V to 36V and features a maximum temperature coefficient of 7ppm/°C. The component supports a source current capability of up to 20mA and a sink current of 10mA, ensuring robust regulation under varying load conditions.

Feature Summary

• Ultra-low low-frequency noise performance for critical signal integrity
• High DC accuracy with tight initial voltage tolerance
• Wide input voltage operating range for flexible system integration
• Excellent line and load regulation characteristics

Applications

• High-end instrumentation systems requiring precise voltage sources
• Data acquisition and processing applications demanding high DC precision
• Industrial control systems utilizing active sensor sources
• Communication infrastructure equipment needing stable references

Procurement Notes

Verify the specific suffix 'TK' against official Renesas documentation to confirm tape-and-reel packaging specifications and quantity per reel. Ensure the part number matches the exact 5.0V output variant required for your design. Cross-reference the manufacturer's latest datasheet for any recent package or qualification updates before finalizing procurement orders.

Selection Notes

Select this component when sub-microvolt noise levels are critical for system performance. The 5.0V output option suits applications requiring higher reference levels without external scaling. Consider the 8-lead SOIC package constraints and thermal management requirements for the specified -40°C to +125°C operating temperature range during PCB layout.

Part Context

This part belongs to the ISL21090 family of ultra-low noise precision voltage references. The family offers multiple fixed output voltages including 1.25V, 2.5V, 5.0V, and 7.5V options. All variants share similar core technologies, providing high accuracy and low drift suitable for demanding analog signal chain applications across industrial and scientific fields.

Replacement Considerations

Direct substitutes include other ISL21090 variants with different output voltages if electrical compatibility allows. Verify pinout and package dimensions match the existing footprint. Consult Renesas for recommended alternatives if the specific 5.0V version is discontinued.