ISL21009DFB812Z

Overview

The ISL21009DFB812Z is a high voltage input precision voltage reference utilizing Intersil's proprietary Floating Gate Analog (FGA) technology. It provides a fixed output voltage of 1.25V with an initial accuracy of ±2.0mV and a temperature coefficient of 10ppm/°C. The device operates within an input voltage range of 3.5V to 16.5V, consuming a maximum supply current of 180µA. It features low output noise of 4.5µV P-P in the 0.1Hz to 10Hz bandwidth and supports an output current capability up to ±7.0mA. The component is housed in an 8-lead SOIC package and functions reliably across an industrial temperature range of -40°C to +125°C.

Feature Summary

• Utilizes proprietary Floating Gate Analog technology for extremely low power consumption and minimal temperature drift.
• Provides guaranteed initial accuracy as low as ±2.0mV with a wide input voltage operating range.
• Features ultra-low output noise performance suitable for sensitive analog signal processing applications.

Applications

• High resolution A/Ds and D/As
• Digital Meters
• Industrial instrumentation equipment

Procurement Notes

Verify that the specific suffix 'DFB812Z' corresponds to the required ±2.0mV accuracy and 10ppm/°C temperature coefficient specifications. Confirm the package type matches the 8 Ld SOIC requirement. Ensure compliance with RoHS standards and Pb-free material sets as defined by the manufacturer. Check for any specific handling precautions related to electrostatic discharge sensitivity during assembly.

Selection Notes

Select this component when a fixed 1.25V reference with moderate initial accuracy is sufficient for the application. Consider the 10ppm/°C temperature coefficient against stricter requirements; if higher precision is needed, evaluate variants with lower tempco values. Ensure the input voltage stays within the 3.5V to 16.5V range. Account for the 180µA maximum supply current for battery life calculations in portable devices.

Part Context

The ISL21009 series belongs to Renesas Electronics' FGA™ voltage reference family, designed for high precision and low noise applications. This specific part number represents one of several output voltage options available within the series, tailored for systems requiring stable reference voltages. The series leverages advanced floating gate CMOS processes to achieve superior stability and low power characteristics compared to traditional bandgap references.

Replacement Considerations

Direct substitutes include other ISL21009 variants such as ISL21009BFB812Z or ISL21009CFB812Z, which offer different accuracy and temperature coefficient grades while maintaining the same pinout and functionality. Verify that any replacement maintains the 1.25V output and compatible package dimensions.