M65854 Mitsubishi, M65854 Datasheet - Page 11

• Manufacturer Part Number: M65854
• Description: DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
• Manufacturer: Mitsubishi

(6) Input and output LPF for the digital echo
(5)ALC level diagram
Input
The accuracy of the internal resistance of the IC is approximately ±30%
Cut-off frequency(fc) is given as follows.
Quality factor (Q) is given by the following equation for long echo.
The input and output LPF for the digital echo are configured as shown.
figure below.
Q=
fc=
1
3
2 X 24k
C2
C1
24k
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
0.72
X
1
13
Vo(dBV)
-10
-20
-30
10
+2
0
-70
C1:4700pF
(Figure of 0.7 is recommended)
C1 X C2
-60
24k
-50 -40 -30 -20 -10
MICROPHONE AMPLIFIER GAIN SETTIG=47dB
Vi(dBV)
=
ALC OPERATING VOLTAGE SETTING RANGE
2 X 24k
14
MITSUBISHI
ELECTRIC
C2:1000pF
24k
MITSUBISHI SOUND PROCESSOR ICs
X 4700pF X 1000pF
1
M65854FP
15
Output
(
3.1KHz
1 1
/
KARAOKE
50
1 4 )
S E R I E S
S E R I E S