ISL21009BFB825Z-TK

Overview

The ISL21009BFB825Z-TK is a high voltage input precision, low noise FGA™ voltage reference with a fixed output of 2.5V and ±0.5mV initial accuracy. It features a 3ppm/°C temperature coefficient, 4.5µV P-P noise (0.1Hz to 10Hz), and a maximum supply current of 180µA. The device operates within an input voltage range of 3.5V to 16.5V and supports up to ±7.0mA output current capability. It is housed in an 8-lead SOIC package and functions across a -40°C to +125°C operating temperature range.

Feature Summary

• Utilizes proprietary Floating Gate Analog technology for extremely low power consumption and minimal temperature drift.
• Delivers high DC precision with guaranteed initial accuracy as tight as ±0.5mV.
• Provides exceptionally low output noise performance suitable for sensitive data acquisition applications.

Applications

• High Resolution A/Ds and D/As
• Digital Meters
• Battery Management/Monitoring

Procurement Notes

Verify the specific suffix '-TK' indicates tape and reel packaging configuration per manufacturer documentation. Confirm RoHS compliance status and check for any product change notifications or end-of-life notices associated with this part number before finalizing procurement plans.

Selection Notes

Select this component when high precision and low noise are critical requirements alongside low power consumption. Ensure the application input voltage remains within the specified 3.5V to 16.5V range. Consider the 100µs turn-on settling time for power sequencing designs.

Part Context

This device belongs to the ISL21009 family of voltage references manufactured by Renesas Electronics Corporation using Intersil's FGA™ technology. The 'B' grade denotes the highest accuracy tier, while 'FB825' specifies the 2.5V output option. The '-TK' suffix designates the specific tape and reel packaging format.

Replacement Considerations

Compatible variants include ISL21009CFB825Z and ISL21009DFB825Z, which offer different accuracy grades and temperature coefficients. Substitutes must match the 2.5V output requirement and 8-lead SOIC package form factor.

FAQ

How does the TRIM pin function on the ISL21009?

The TRIM pin allows for output voltage adjustment of approximately ±2.5%. It can be connected to a potentiometer between VOUT and GND to fine-tune the reference voltage.

What is the recommended handling procedure regarding X-rays?

FGA technology is sensitive to X-ray exposure. Devices passing through airport screening multiple times may require shielding with copper or aluminum planes to prevent cumulative output voltage shifts.