Dual SPST Depletion Mode Audio Switch with Negative Swing

The FSA557 is a high-performance dual single-pole single-throw (SPST x 2) audio switch. The Depletion technology allows the device to conduct signals when there is no VCC available and to isolate signals when VCC is present. During signal conduction, the Depletion gate control allows the FSA557 to achieve excellent THD+N performance while consuming minimal power.