MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
APPLICATION EXAMPLE
Microphone amplifier : Gv=47dB,fcl=50Hz
ALC operating voltage -4dBV
ECHO
: Delay time 197ms (fs=83.3kHz)
Cut-off frecuency 3.1kHz
5k
0.15µ
1µ
VCFIL
0.01µ
51k
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
MICIN
MIC1
1
2
4.7µ
VALC
AUDSW2
AUDSW1
VCC
ALC1
2.2µ
24k
D2
D1
MIC1NFIN
MIC1OUT
MIC1VOLIN
MIC2IN
3
4
5
1µ
51k
1µ
CLOCK
CONT
VCC
5k
30kW
MICSW
MIC
SW
MIC2
6
7
4.7µ
1µ
MICECHO
OUT
ALC2
2.2µ
2.2µ
LLINEOUT
RLINEOUT
LLINEIN
Lout
MIC2NFIN
MIC2OUT
MIC2VOLIN
MICOUT
LPF1IN
8
9
2.2µ
1µ
Rout
1µ
1µ
Lin
10
1µ
30kW
RLINEIN
Rin
11
12
24k
30kW
1µ
1000p
24k
0.047µ
24k
ECHO
VOLIN
1µ
1000p
24k
LPF2OUT
LPF2IN
LPF1OUT
ADINTIN
ADINTOUT
ADCONT
REF
13
14
15
16
17
18
24k
0.047µ
0.068µ
DAINTOUT
DAINTIN
DACONT
VCC
24k
0.068µ
0.1µ
0.1µ
47µ
VCC
GND
0.1µ
100µ
Feed Back
0.15µ
50k
Units Resistance :W
Capacitance:F
MITSUBISHI
ELECTRIC
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MITSUBISHI [ Mitsubishi Group ]
