FSA8049 Datasheet (Fairchild Semiconductor)

FSA8049, Audio Jack Detection

The FSA8049 is an audio jack detection switch for 3- or 4-pole accessories.

The FSA8049 detects the locations of ground (GND) and microphone (MIC) poles on the audio plug and automatically routes them to the appropriate connections.

This allows the end user to plug accessories, such as headsets with

FSA8049 Features

* Detection VDD THD (MIC) ESD (IEC 61000-4-2) (Air Gap) Operating Temperature Package Top Mark Ordering Information Audio Plug GND & MIC Polarity 2.5 to 4.4 V 0.002% Typical 15 kV -40°C to 85°C 9-Ball WLCSP 3x3 Array, 0.4 mm Terminal Pitch, 250 µm Ball M3 FSA8049UCX Applications

* Cellular Phone