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參數(shù)資料
| 型號： | LA7458W |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 10 X 10 MM, SQFP-64 |
| 文件頁數(shù)： | 3/22頁 |
| 文件大小： | 244K |
| 代理商： | LA7458W |
LA7458W
No.A0642-11/22
Continued from preceding page.
Pin
No.
Pin name
DC
voltage
AC
voltage
Function
Equivalent Circuit
29
AF LIM IN/AF LPF
IN
1.575V
In standard
input
mode :
-20dBs
In playback mode : AF low-pass
filter input
In Record mode : AF limiter internal
30
HP COMMON
2.1V
HP common. Can be used without a
capacitor by outputting the same
DC level as the HP output pin.
31
SP/HP SELECT
Switches between HP and SP
mode.
When open, HP mode is selected.
When shorted to the common pin,
SP mode is selected.
32
HP OUT
2.1V
VR max
13dBs
HP output.
33
GND
Ground for the speaker and
headphone amplifier block.
34
VREF FIL
2.2V
VREF ripple rejection filter
connection.
35
SP VCC
4.8V
VCC for the speaker and
headphone amplifier block.
Continued on next page.
SP VCC
30
10k
Ω
31
SP VCC
32
34
50k
Ω
VREF
VCC1
29
200
Ω
300
Ω
200
Ω
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