ISL28218

The ISL28218 is a high-performance, low-power quad-channel analog multiplexer from Renesas Electronics Corporation, designed for precision signal routing in demanding applications. It features four independent single-pole, double-throw (SPDT) switches that enable flexible and accurate selection of input signals to a shared output path. Each channel supports a wide supply voltage range of 2.7 V to 5.5 V, making it suitable for both low-voltage battery-powered systems and standard 3.3 V or 5 V logic environments. This device offers exceptional channel-to-channel matching, with a maximum on-resistance variation of 10 mΩ across all channels, ensuring minimal signal distortion and consistent performance. The typical on-resistance is just 120 mΩ at 3.3 V, which minimizes power loss and improves system efficiency. Its low leakage current—less than 1 nA at room temperature—ensures high accuracy in sensitive measurement applications such as sensor interfaces and data acquisition systems. The ISL28218 includes integrated protection features such as overvoltage and ESD protection, enhancing reliability in industrial and automotive environments. It operates with a fast switching speed of less than 1 μs, enabling rapid signal routing without introducing significant propagation delay. The device also features a low quiescent current of only 1 μA in standby mode, contributing to extended battery life in portable and energy-conscious designs. Designed for robust operation, the ISL28218 is available in a compact 16-pin TSSOP package, offering excellent thermal performance and ease of integration into space-constrained PCB layouts. It is fully specified over an industrial temperature range of -40°C to +125°C, making it ideal for harsh operating conditions found in automotive, medical, and industrial control systems. Applications include multi-sensor signal routing in IoT devices, analog front-end design in test and measurement equipment, and dynamic channel selection in communication modules. Its combination of low power, high precision, and ruggedness makes it well-suited for use in battery-operated instrumentation, wearable health monitors, and embedded control systems where reliable and efficient signal management is critical.