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參數(shù)資料
| 型號(hào)： | M65853FP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT |
| 中文描述： | 數(shù)字回聲混合電路和麥克風(fēng) |
| 文件頁數(shù)： | 13/17頁 |
| 文件大?。?/td> | 113K |
| 代理商： | M65853FP |
ELECTRIC
MITSUBISHI
(
/ 1 7 )
M65853FP
MITSUBISHI SOUND PROCESSOR ICs
KARAOKE
50
S
S
S E
E
E R
R
R I
I
I
E
E
E S
S
S
PRELIMINARY
To set ALC operating voltage at -5dB(Vcc=5V)
-5dBV=0.56Vrms=1.59Vp-p=0.8Vp-o
V
ALC
=2.5-0.8=1.7V
Since the input impedance at pin 35 is high at 1M
it is possible to provide ALC operating voltage by dividing
resistance.
When Vcc=5V
or more,
ALC operating voltage can be set at a desired value between -10 and +3dBV by varying
the DC voltage applied to pin 35 (ALC operating voltage setting terminal).
(Setting method)
(6)ALC operating voltage setting
ONE SIDE
PEAK VOLTAGE,Vpo
VOLTAGE APPLIED TO 35 PIN,VALC
OV
VALC=
Vcc-Vpo
2
1
2.5V( Vcc)
INTERNAL DC BIAS
35
R
Vcc
51k
0.01
μ
Voltage applied to
pin 35 VALC(V)
0.50
1.09
1.38
1.61
1.79
1.94
2.05
ALC operating
voltage (dBV)
+3
0
-2
-4
-6
-8
-10
Resistance R(
)
5.6k
15k
20k
24k
27k
33k
36k
(5)ALC level diagram
-30
-20
-10
0
+3
10
-50 -40 -30 -20 -10
MICROPHONE AMPLIFIER GAIN SETTIG=47dB
ALC OPERATING VOLTAGE SETTING RANGE
Vo(dBV)
Vi(dBV)
-60
-70
1 3
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