S-19680 Series, Easy Connection Diagnostics for GPS Antennas and Other Automotive Applications

SII Semiconductor Corporation, a subsidiary of Seiko Instruments Inc., announced the launch of the S-19680 series high-side switch equipped with a current monitoring function that enables easy connection diagnosis for GPS antennas and other automotive applications.

This new product can detect phase loss, normal, and open circuit conditions. Target applications include remote LNA phantom power for GPS antennas, ADAS locators, communication systems for transportation/automotive communication systems, e-call, automotive navigation systems, automotive audio systems, and infotainment systems.

GPS antennas require continuous monitoring and diagnosis to verify their connection status. Traditional circuit designs using discrete components are complex and require a vast assembly area. However, the S-19680 is compact and allows for easy diagnosis of antenna connection status using an IC. With the S-19680 series, design engineers can enjoy the additional benefit of minimal board space, along with a powerful, accurate, and commercially available solution that simplifies antenna connection diagnosis.

The S-19680 series receives ON/OFF signals from the MCU to appropriately control the power supply to the antenna amplifier while simultaneously monitoring the load current. It can detect phase loss or open circuit conditions in the load current through the output of a warning signal. With this feature, a phase failure detection current of 2.5mA can be used in the connection state of light-load applications.

There is also a load limiting circuit that allows the user to select a 10mA increment from 40mA to 100mA. Load short-circuit detection is based on the user-selected limit current x 0.3 and limit current x 1.0 (selectable in 0.1 increments). Load phase loss detection allows for a 2.5mA increment selection from 2.5mA to 30mA. The S-19680 series provides a wide supply voltage range of 2.7V to 10.0V and ultra-low current consumption of 12 μA during operation. The package is TMSOP-8. The AEC-Q100 is under production, and PPAP is available upon request.