FSA557 Datasheet (ON Semiconductor) - Low Supply Signal Bypass-IC

FSA557, Low Supply Signal Bypass-IC

Pin No.

WLCSP12 Pin Name Description A1 L1 Low Supply Signal Path 1 A2 VDD Power Supply or Select Signal from Host GPIO A3 L2 Low Supply Signal Path 2 B1 COM1 Common Port 1 B2 NC No Connect B3 COM2 Common Port 2 C1 H1 High Supply Signal Path 1 C2 EN_N Path enable (active l

Low Supply Signal Bypass IC Product Preview FSA557 The FSA557 integrates 0.3 W depletion and enhancement mode switches to provide a signal bypass solution when batteries of wireless devices are low or have no charge left.

In addition, an optional slow gradual transition is included to suppress any undesirable artifacts (ex: click and pop) when switching between signal sources.

The depletion technology allows the device to conduct signals when there is no VDD available and to isolate signals when

FSA557 Features

* Dual Depletion Switches

* Normally Closed when VDD < 0.5 V

* VSW:

* 1.5 V to +5.5 V

* RON: 220 mW (Typical)

* THD+N:

* 110 dB (Typical)

* Dual Enhancement Switches

* VSW:

* 1.5 V to +5.5 V

* RON: 290 mW (Typical)