參數(shù)資料
型號(hào): LA7458W
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝: 10 X 10 MM, SQFP-64
文件頁(yè)數(shù): 7/22頁(yè)
文件大小: 244K
代理商: LA7458W
LA7458W
No.A0642-15/22
Continued from preceding page.
Pin
No.
Pin name
DC
voltage
AC
voltage
Function
Equivalent Circuit
59
LINE IN
1.85V
(VREFH)
Standard
input :
-33dBs
Line input (ALC).
60
INT MIC VCC
2.3V
Internal microphone power supply.
61
INT MIC IN
1.575V
Internal microphone amplifier input.
The input impedance is 70k
Ω.
62
INT MIC MAP FB
Internal microphone amplifier
negative feedback input.
63
INT MIC OUT
1.575V
Internal microphone amplifier output.
This is a low-impedance output.
64
VREF L OUT
1.575V
VREF bias voltage output.
50k
Ω
59
200
Ω
VCC1
VREF
20k
Ω
38k
Ω
60
200
Ω
VCC1
70k
Ω
61
200
Ω
VCC1
VREF
62
200
Ω
100k
Ω
INT AMP OUT
VCC1
63
64
200
Ω
VCC1
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