onsemi

FSA839UCX

FSA839UCX Description

The FSA839UCX is a single-pole double-throw (SPDT) switch designed for high-performance signal routing applications. Manufactured by onsemi, this interface IC chip is part of the FSA83 series and is known for its robust performance and reliability. The FSA839UCX features a maximum on-state resistance of 750 mOhm, ensuring minimal signal loss and high efficiency. It operates within a supply voltage range of 1.65V to 5.5V, making it suitable for a wide range of power supply configurations. The device also boasts a -3dB bandwidth of 60MHz, which is ideal for high-frequency signal switching.

FSA839UCX Features

• Low Leakage Current: The FSA839UCX has a maximum leakage current (IS(off)) of 10nA, ensuring minimal power consumption and signal degradation when the switch is off.
• Low Channel Capacitance: With a channel capacitance (CS(off), CD(off)) of 50pF, the device minimizes signal distortion and ensures fast switching times.
• Fast Switching Times: The switch time (Ton, Toff) is maximized at 25ns and 20ns, respectively, enabling rapid signal routing and high-speed applications.
• Charge Injection: The device has a charge injection of 70pC, which helps maintain signal integrity during switching.
• Compliance and Packaging: The FSA839UCX is REACH unaffected and RoHS3 compliant, ensuring environmental and safety standards are met. It is available in a surface-mount 6-WLCSP package, which is ideal for compact designs.
• Multiplexer/Demultiplexer Circuit: The device features a 2:1 multiplexer/demultiplexer circuit, providing versatile signal routing options.

FSA839UCX Applications

The FSA839UCX is ideal for a variety of applications where high-frequency signal switching and minimal signal loss are critical. Some specific use cases include:

• High-Speed Data Communication: The device's high bandwidth and fast switching times make it suitable for routing high-speed data signals in communication systems.
• Audio Signal Routing: The low on-state resistance and minimal leakage current ensure high-fidelity audio signal switching in consumer electronics and professional audio equipment.
• Medical Devices: The compact size and high reliability of the FSA839UCX make it an excellent choice for medical devices where precision and reliability are paramount.
• Automotive Electronics: The device's robust performance and compliance with environmental standards make it suitable for automotive applications where signal integrity and reliability are crucial.

Conclusion of FSA839UCX

The FSA839UCX is a versatile and high-performance SPDT switch that offers significant advantages over similar models. Its low leakage current, fast switching times, and wide supply voltage range make it suitable for a wide range of applications. The device's compliance with environmental and safety standards ensures it meets the requirements of modern electronics manufacturing. While the FSA839UCX is currently marked as obsolete, its technical specifications and performance benefits make it a reliable choice for existing designs and legacy systems.