參數(shù)資料
型號(hào): BH7370FS
英文描述: TV Sound and Video Receiver Circuit
中文描述: 電視聲音和視頻接收器電路
文件頁(yè)數(shù): 4/9頁(yè)
文件大?。?/td> 131K
代理商: BH7370FS
4
Video ICs
BH7370FS
11
12
13
14
15
16
AF
OUT
AFTF
FB
AFC
GND
D
VCO
CONT
VO
4.5M
2.2V
2.4V
2.2V
0V
OUT
OUT
IN
2k
500
60k
2k
5.66p
11.3p
500
500
500
80k
200
100
800
5k
1k
5k
20k
50k
20k
20k
50k
Vcc
GND
12
10
13
Vcc
GND
14
Vcc
GND
15
Vcc
Vcc
GND
GND
11
17
V
DD
4.5V
Pin name
IN / OUT
Pin No.
Voltage
Equivalent circuit
Function
Audio signal output.
A de-emphasis constant should
normally be attached.
The Lo range of the AFT curve
can be expanded by feeding
back to PLL—FIL.
Automatic adjustment FB for
the 500kHz pulse counter FM
DEMO. Attach a capacitor
(roughly 4.7
μ
F). Lowering
this pin below 0.3V Mutes
Audio and Video.
2nd SIF output. Sound Filter
characteristics can be changed
by connecting this pin to the
TRAP. To reduce color buzzing,
attach a 3.5MHz trap. Internal
impedance is approximately
500
. Attach a Buffer if output.
C-MOS GND.
Locate the pattern as far as
possible from the Bipolar – GND.
Switching the internal VCO
frequency.
High = 45.75MHs (U.S.)
(connect to Vcc)
Low = 58.75MHz (Japan)
(connect to ground)
C-MOS V
DD
.
CMOS radiation can be greatly
reduced by positioning a CR filter
between this pin and Bipolar – Vcc.
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