參數(shù)資料
型號: LA75521VA
元件分類: 接收器
英文描述: AUDIO/VIDEO DEMODULATOR, PDSO24
封裝: 0.225 INCH, SSOP-24
文件頁數(shù): 8/13頁
文件大小: 191K
代理商: LA75521VA
LA75521VA
No.A1004-4/13
Package Dimensions
unit : mm (typ)
3287
System changeover
a. SIF system SW
The SIF system changeover can be made by connecting both/either A (pin 7) and/or B (pin 9) to GND or by keeping
both or either of them OPEN.
A
B
BG
I
DK
MN
FM DET LEVEL
de-emphasis
GND
0dB
50μs
GND
OPEN
0dB
50μs
OPEN
GND
0dB
50μs
OPEN
6dB
75μs
Note:
indicates that the system is selected.
b. IF system SW
The IF frequency becomes 38.9MHz when pin 10 is open.
The IF frequency changes to 38.0MHz when pin 10 is connected to GND.
This frequency also changes to 39.5MHz when pin 10 is set to VCC.
c. split/inter carrier SW
Inter carrier is selected by connecting the 1st SIF input (pin 13) to GND.
d. Reference frequency changeover SW
The frequency becomes 4.43MHz when pin 11 is open.
The frequency becomes 4.0MHz when 270k
Ω is connected between pin 11 and GND.
e. AFT mute level, TRAP point shift
By changing the voltage of pin 15, the potential when AFT is muted and the TRAP point of either “just” or “shift”
(about +220kHz) can be selected.
Pin 15 potential
AFT mute potential
TRAP point shift
VCC to 4V
MIDDLE (VCC/2)
Just
4V to 2.5V
MIDDLE (VCC/2)
Shift
2.5V to 1V
HI (VCC)
Just
1V to GND
HI (VCC)
Shift
* With VCC = 5V
f. When the FM detection function is not used
When the SIF circuit is not used and the FM detection VCO is to be stopped, short-circuit pin 1 - GND with the
resistance of 1k
Ω or less.
SANYO : SSOP24(225mil)
6.
4
6.5
0.5
4.
4
(0.5)
(1.
3)
24
13
1
12
0.22
0.
5
0.15
0.
1
1.
5max
Pd max - Ta
0
200
400
600
800
1000
1200
-20
0
20
40
60
80
100
Ambient T emperat ure, T a - °C
Allo
wa
b
le
P
o
w
e
rD
is
sip
a
tio
n
,Pd
m
a
x
-
m
W
Mounted on a specified board:
76.1mm
×114.3mm×1.6mm, glass epoxy board
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