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參數(shù)資料
| 型號： | FSA2000UMX |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 5/11頁 |
| 文件大小： | 0K |
| 描述： | IC HS-USB/AUDIO SWITCH 16UMLP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 功能： | 音頻，USB 開關(guān) |
| 電路： | 1 x 1:1 |
| 電壓電源： | 單電源 |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 4.3 V |
| 電流 - 電源： | 6µA（USB），3mA（音頻） |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-UMLP |
| 供應(yīng)商設(shè)備封裝： | 16-UMLP（1.8x2.6） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | FSA2000UMXDKR |
2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSA2000
Rev. 1.0.0
3
FS
A2
0
00
–
Auto
-Se
lecti
ng
HS
-US
B
Swit
ch
with
Cap
-Free
He
ad
phon
e
Au
dio
Ampli
fier
Functional Diagram
Functional Mode
Power Down
Audio Power Down
Transient
Suppression
Audio Mode
USB Mode
V
BUS
LOW
HIGH
V
CC
LOW
HIGH
/SHDN
LOW
HIGH
MUTE
HIGH
LOW
Charge Pump
OFF
ON
OFF
R/L Amplifiers
OFF
ON
OFF
D+/R, D-/L
HI-Z
D+/R, D-/L=0V
R/L
D+/D-
Figure 3 Label
A
B
C
D
E
Notes:
1.
The (X) indicates “Don’t Care” state.
Figure 3. Functional Diagram
Audio Power Down
–An active-LOW shutdown pin (/SHDN) allows the amplifiers to be placed in low-power
(or shutdown) mode to conserve battery power. While the FSA2000 is in shutdown mode, USB data transfers are
allowed whenever a USB cable is connected to a host (VBUS is HIGH). The audio amplifiers are enabled and
connected to the common port when /SHDN is HIGH and VBUS is LOW.
Transient Suppression
– The FSA2000 audio amplifier has a soft turn-on feature that suppresses click and pop on
the audio path when the path is selected. In addition to the soft turn-on feature of the amplifier, the MUTE pin mutes
the audio path when asserted HIGH. The mute functionality also has an internal pull-down that disables mute if the
MUTE pin is floated. The MUTE pin allows control of the mute functionality by the application. Please refer to
application note AN-8031, describing the recommended timing and control of MUTE for optimal performance.
V
BUS
D+
D-
D+/R
D-/L
R
L
MUTE
/SDHN
V
CC
Audio
Control
USB
Control
A
B
C
D
E
Audio Mode
USB Mode
C
B
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