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參數(shù)資料
| 型號(hào)： | 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)： | 37/54頁 |
| 文件大?。?/td> | 830K |
| 代理商： | LA17000M |
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LA17000M
No. 6522-42/54
Methods for Using the LA17000M
(1) About VCC and GND
Pin 56
VCC for FM IF, AM, NC, MPX, and MRC
Pin 39
GND for FM IF and AM
Pin 14
GND for NC, MPX and MRC
Pin 77
VCC for FM FE, AM 1st MIX, and 1st OSC
*Pin 6
VCC for FM FE and AGC, and AM/FM switch
Pin 3
GND for FM FE, AM 1st MIX, and 1st OSC
(2) Notes on AM coil connection
VCC for the 1st OSC coil that is connected to pin 7 should have the same electric potential as pin 77.
Connect pin 61 IFT to pin 70 MIX coil. VCC should have the same electric potential as pin 56.
(3) AM/FM switch
Pin 6 serves as FM, FE, and RFAGC VCC.
(4) Relationship between pin 38 and pin 17
4-1. For FM
Pin 17
STEREO indicator and SD dual-purpose pin
Pin 38
DC input SEEK, STOP pin (control pin)
AC output IF count buffer pin
SW1
SW2
Pin 38 voltage
Pin 17
OPEN
5 V
IF count buffer on
SD
ON
OPEN
2.5 V
IF count buffer on
High-speed SD
—
ON
0.7 V or less
OFF
Stereo indicator
Relationship Between Pin 38 Control Method and Output from Pins 38 and 17
Pin 6 voltage
Mode
8FM
OPEN
AM
IF count buffer
0 to several k
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