參數(shù)資料
型號(hào): LA72680M
元件分類(lèi): 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝: 14 X 14 MM, QFP-80
文件頁(yè)數(shù): 21/21頁(yè)
文件大小: 323K
代理商: LA72680M
LA72680M
No.7955-9/21
Continued from preceding page.
DC voltage
Pin
No.
Pin Function Name
AC level
Function
Equivalent circuit
17
REC mute terminal
DC; Unsettled
Two levels control terminal.
Hi ; 3.0V to Vcc
Low ; 0V to 1.5V
1k
150k
100k
18
45
NR waiting DET
terminal(L)
NR waiting DET
terminal(R)
Terminal for waiting detector.
The recommended external capacity is 10
F.
500
5.6k
500
DC; 2.5V
19
44
20
43
NR waiting filter
terminal1(L)
NR waiting filter
terminal1(R)
NR waiting filter
terminal2(L)
NR waiting filter
terminal2(R)
AC;
(Pin 19,Pin 44)between GND;4.7
F
(Pin 20,Pin 43)between GND;0.01
F
Pin19,44
22k
2.4k
Pin20,43
21
22
42
41
CCA reference
terminal(L)
NR emphasis
terminal(L)
NR emphasis
terminal(R)
CCA reference
terminal(R)
DC; 2.5V
By connecting 22F between Pin 21, Pin 41
and GND, 4700pF between Pin 22, Pin 42
and GND, form the NR emphasis.
Pin22,42
12k
39k
Pin21,41
10k
10k
30k
23
HiFi/Nor selecting
terminal
(PB)
(2)Monitor control
terminal at Pin 34
(EE)
In PB mode, Pin 23 becomes
“TRACKING_DC” when inputting HiFi audio
signal and becomes “L” when inputting
Normal signal.
In EE mode, this is used as the terminal for
monitor control of Pin 34.
Low(0 to 0.8V) ; VCO MIX
Middle(1.4V to 3.6V) ; Lch VCO
High(4.2V to VCC) ; Rch VCO
150k
5k
500
5E
Continued on next page.
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