參數(shù)資料
型號: LA17000M
元件分類: 接收器
英文描述: AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP80
封裝: 14 X 14 MM, QFP-80
文件頁數(shù): 24/54頁
文件大小: 830K
代理商: LA17000M
LA17000M
No. 6522-30/54
Continued from preceding page.
Pin No.
Function
Equivalent circuit
Description
6
F.E.VCC, AM/FM switch
Pin 6 is shared for FM F.E.VCC and
pin
the AM/FM SW circuit.
7
AM OSC
First OSC for AM.
Permits oscillation up to the SW
band.
ALC circuit connected.
8
Noise AGC sensitivity
9
AGC adjusting pin
10
AM 2nd OSC
A13366
AM/FM Switch
Circuit
V6 voltage
Mode
8V
FM
OPEN
AM
Pin 8 is the noise sensitivity setting
pin. After setting a moderate field
(approximately 50 dB
), use the pin 9
AGC adjusting pin to make the
setting for weak fields (approximately
20 to 30 dB
).
Shared pin.
CF selectivity switch.
Select either 10.7 MHz 1st IF input
pin 72 or pin 78.
A second local oscillation signal is
injected by the PLL XBuffer.
* The PLL X’tal is as follows:
AM 9 kHz step 10.35 MHz
AM 10 kHz step 10.25 MHz
(NDK AT-51 type: XTAL oscillator)
A13331
A13332
A13367
Continued on next page.
SWON
pin 78 input
SOWOPen pin 78 input
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