FSA8049 Series

Audio Jack Detection and Configuration, MIC / GND Cross Point Switch

Catalog

Audio Jack Detection and Configuration, MIC / GND Cross Point Switch

Part	Applications	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Max]	Voltage - Supply [Min]	Specifications	Mounting Type	Number of Channels	Supplier Device Package [x]	Supplier Device Package	Supplier Device Package [y]	Function	Package / Case	Interface
ON Semiconductor FSA8049UCX	Communication Systems Consumer Audio	85 °C	-40 °C	4.4 V	2.5 V	4-Pole	Surface Mount	1	1.22	9-WLCSP	1.22	Detection Switch	9-UFBGA WLCSP	Logic
ON Semiconductor FSA8049UCX	Communication Systems Consumer Audio	85 °C	-40 °C	4.4 V	2.5 V	4-Pole	Surface Mount	1	1.22	9-WLCSP	1.22	Detection Switch	9-UFBGA WLCSP	Logic

Catalog

Audio Jack Detection and Configuration, MIC / GND Cross Point Switch

Key Features

• Detection: Audio Plug GND & MIC Polarity

• VDD: 2.5 to 4.4V

• THD (MIC): 0.002% Typical

• ESD (IEC 61000-4-2 Air Gap): 15kV

• Operating Temperature: -40°C to 85°C

• Package: 9-Ball WLCSP 3x3 Array, 0.4mm Terminal Pitch, 250µm Ball

• Top Mark: M3

Description

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 different audio pole configurations, into the mobile device and have them operate correctly.￭ Detects 3- or 4-pole audio accessories￭ Detects polarity of GND and MIC on 4-pole plugs￭ Automatically routes GND and MIC to audio jack terminals