ISL21009DFB825Z

Product Overview

The ISL21009DFB825Z from Intersil is a fixed series voltage reference IC that provides a 2.5 V output from an input range of 3.5 V to 16.5 V. It uses a surface-mount 8-SOIC package with a 0.154 inch, 3.90 mm body width. The device is specified with a ±0.16% output tolerance, a 10 ppm/°C temperature coefficient, and an output current capability of 7 mA. It is suited for designs that need a stable reference voltage for analog signal paths, data conversion, or control functions within an ambient temperature range of -40°C to 125°C.

Key Features

• Fixed 2.5 V series voltage reference output.
• Output tolerance of ±0.16% and temperature coefficient of 10 ppm/°C.
• Output current capability of 7 mA with supply current of 180 µA.
• Noise specified as 4.5 µVp-p from 0.1 Hz to 10 Hz and 22 µVrms from 10 Hz to 10 kHz.
• Operating input range of 3.5 V to 16.5 V and ambient temperature range of -40°C to 125°C.
• Surface-mount 8-SOIC package with 0.154 inch, 3.90 mm width.

Applications

• Reference voltage for analog-to-digital converter front ends in measurement systems.
• Stable bias reference for sensor signal conditioning and transducer interfaces.
• Fixed reference point for control loops and regulated power paths.

Design & Procurement Notes

Design considerations should include the fixed 2.5 V output, the 7 mA output current specification, and the 180 µA supply current when sizing the reference load and system power budget. The 3.5 V to 16.5 V input range and -40°C to 125°C ambient range should be checked against the board operating conditions. For low-noise analog paths, the 4.5 µVp-p and 22 µVrms noise figures should be considered during layout planning. The 8-SOIC surface-mount package requires footprint verification using the 0.154 inch, 3.90 mm width.