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參數(shù)資料
| 型號(hào)： | LA1845NM |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Single-Chip Home Stereo IC |
| 中文描述： | 單芯片家用音響集成電路 |
| 文件頁(yè)數(shù)： | 5/10頁(yè) |
| 文件大小： | 190K |
| 代理商： | LA1845NM |
Continued from preceding page.
No. 5888-5/10
LA1845N, 1845NM
Pin No.
Pin function
Pin voltage
Notes
Equivalent circuit
V
CC
– 1.0
Pilot detector low-
pass filter (Forced
mono) (VCO stop)
12
The device is forced to monaural when a current of
over 50 μA flows from this pin.
The VCO is stopped when a current of over 200 μA
flows from this pin.
The limit values for the resistor are the same as
those for pin 11.
12
A10642
3.2 V
3.2 V
L outputs
R outputs
13
14
Output impedance r
o
= 3.3 k
13
14
A10647
( )
Vreg
Pilot canceler
output
15
15
3
A10645
Vreg
Decoder input
16
Inverting input pin
RNF = 20 k
16
RNF
Vreg
PLL input
17
Input impedance ri = 20 k
17
Continued on next page.
Vreg + 0.7 (FM)
Vreg + 0.7 (AM)
FM demodulator
output
18
Output impedance r
o
= 2.3 k
The channel separation can be adjusted with an
external capacitor connected between this pin and
ground.
18
A10649
0 V (FM)
1.5 V (AM)
AM detector
output
19
Output impedance r
o
= 10 k
100V
19
0.2 V (FM)
0.9 V (AM)
S meter,
AM AGC
20
The resistance of the built-in resistor R is 13.9 k
The SD responce during seek operation is
determined with the external capacitor connected
to this pin.
20
A10651
R
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