ON Semiconductor Introduces Analog Audio Switch and Precision Current Sense Amplifier

ON Semiconductor has introduced two new products that can be used together for USB-C applications and also provide advantages for other modern power applications. The new device is the USB Type-C analog audio switch FSA4480 with integrated protection, and a current sense amplifier. NCS21x series.

The FSA4480 is a high-performance USB Type-C port multimedia switch that supports analog audio headsets, allowing universal USB Type-C ports to transmit USB 2.0 signals, analog audio and analog microphone signals. The device supports audio detection paths and is fully integrated and Optimized solution, simplified import design, minimizes footprint of the entire solution. It integrates high voltage protection up to 20 volts (V) DC power and supports OMTP and CTIA (sometimes referred to as the American Headphone Jack (AHJ)) smartphone Headphone standard pinout. Overvoltage protection (OVP) is integrated on the common node pins and any audio device is automatically detected.

The FSA4480 integrates an I2C interface that is easily controlled by a host processor, greatly reducing audio pops and clicks due to changes. The device is packaged in a small WLCSP chip and measures only 2.24 mm x 2.28 mm x 0.5 mm, making it ideal for space. Restricted mobile applications such as smartphones, tablets, digital cameras and speakers. It can also be used in computing devices, including laptops, desktops and hybrid laptops.

The NCS21x family of bidirectional current sense amplifiers includes integrated, highly matched precision resistors to provide accurate, compact system design for measuring small differential voltages. These devices are capable of detecting common-mode voltages in the -0.3 to 26 V range and are suitable for high Edge and low side current sensing. The NCS21xR's zero-drift architecture provides low input bias voltage (down to 35 uV) and low offset drift (down to 0.5 uV/°C). Combined with these devices and integrated gain settings, It can detect the small voltage drop of the shunt, providing high gain accuracy and excellent temperature performance.

Configured for 50/100/200 and 500/gain options, these devices feature a maximum gain error of ±1%, consume 40 uA of low quiescent current, significantly improve energy efficiency, and are ideal for power-saving battery-powered applications. Small SC- The 70 and UQFN packages make them ideal for monitoring battery-managed charge and discharge currents in handheld applications such as smartphones, tablets and laptops. With USB Type-C in fast-growing markets such as hybrid and electric vehicles and some Used in consumer electronics, these current sense amplifiers have been used in power management, motor control and signal conditioning modules.

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