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參數資料
| 型號： | FSA8049UCX |
| 廠商： | Fairchild Semiconductor |
| 文件頁數： | 1/8頁 |
| 文件大小： | 0K |
| 描述： | IC AUDIO JACK DETECT SW 9-WLCSP |
| 標準包裝： | 1 |
| 類型： | 音頻插孔探測器和配置開關 |
| 應用： | MP3 播放器，便攜式媒體播放器 |
| 安裝類型： | * |
| 封裝/外殼： | * |
| 供應商設備封裝： | * |
| 包裝： | 標準包裝 |
| 其它名稱： | FSA8049UCXFSDKR |
August 2012
2011 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSA8049 Rev. 1.0.2
FSA80
4
9
—
Audio
Jack
Detect
ion
and
Confi
guration,
MIC/GND
Cr
oss
point
Switch
FSA8049
Audio Jack Detection and Configuration, MIC / GND
Cross Point Switch
Features
Detection
Audio Plug GND & MIC Polarity
VDD
2.5 to 4.4 V
THD (MIC)
0.002% Typical
ESD (IEC 61000-4-2)
(Air Gap)
15 kV
Operating Temperature
-40°C to 85°C
Package
9-Ball WLCSP 3x3 Array, 0.4 mm
Terminal Pitch, 250 m Ball
Top Mark
M3
Ordering Information
FSA8049UCX
Applications
Cellular Phones, Smart Phones
MP3 and Portable Multimedia Player
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
Related Resources
For evaluation boards and questions, please contact:
Analog.Switch@fairchildsemi.com.
Typical Application
Figure 1. Mobile Phone Example
Oscillator &
Logic
100m
MIC
GNDA
GND/MIC2
GND/MIC1
VDD
Detection
EN
Switch Enable
Timing
CEXT
Audio Jack
LSPKR
RSPKR
3Pole
4Pole
To Audio Plug
Detection Circuit
Audio
Sub System
MIC Bias
MIC
Baseband
Processor
GPIO
RMIC
CMIC
5
tOn/Off
Capacitor
GND
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