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PDF M65854 Data sheet ( Hoja de datos )
| Número de pieza | M65854 | |
| Descripción | DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT | |
| Fabricantes | Mitsubishi | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de M65854 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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PRELIMINARY M65854FP 50soNmoeticpear;aTmheistriisc
nlimotitas fainrealssupbejecicfitctaoticohna. nge.
DIGITAL ECHO
WITH
MITSUBISHI SOUND PROCESSOR ICs
MICROPHONE MIXING CIRCUIT
SE
KARAOKE
RI
E
S
DESCRIPTION
The M65854 is a CMOS IC built-in Digital Echo function with microphone peripheral circuits for
"Karaoke" equipment packed in a single chip.
It is suitable for "Karaoke" equipments such as Video CD Player, Mini Stereo, CD-Radio Cassette, TV
or VCR.
FEATURES
• High performance digital echo circuit thanks to 16Kbit memory
• Built-in surround function which works Simulated Stereo for
monaural source and Stereo Surround for stereo source
• ALC-equipped microphone amplifiers permit excessively
high input. ALC operating voltage can be set as desired.
• 2 microphone volumes and echo effect volume are included
• Stereo microphone-line mixing amplifiers
• Karaoke entertainment functions such as vocal cut and
automatic vocal support system
• Built-in current-control oscillation circuit
• Built-in automatic reset circuit activated with power on
• The use of AUDIO SW easy to control without Microcomputer
• 5V single power supply
RECOMMENDED OPERATING CONDITION
• Supply voltage range • • • • • • • • • •Vcc = 4.5 ~ 5.5V
Rated supply voltage • • • • • • • • • • Vcc = 5V
PIN CONFIGURATION
MCLKCONT 1
MIC1IN 2
ALC1 3
MIC1NFIN 4
MIC1OUT 5
MIC1VOLIN 6
MIC2IN 7
ALC2 8
MIC2NFIN 9
MIC2OUT 10
MIC2VOLIN 11
MIC OUT 12
LPF1IN1 13
LPF1IN2 14
LPF1OUT 15
ADINTOUT 16
ADINTIN 17
ADCONT 18
REF 19
GND 20
VCC 21
42 MIC1VOL
41 MIC2VOL
40 ECHOVOL
39 AUDSW5
38 AUDSW4
37 AUDSW3
36 AUDSW2
35 AUDSW1
34 PS2
33 PS1
32 LOUT
31 ROUT
30 VCFIL
29 LIN
28 RIN
27 LPF2OUT
26 LPF2IN2
25 LPF2IN1
24 DAINTOUT
23 DAINTIN
22 DACONT
SYSTEM CONFIGURATION
Lch
INPUT
Rch
INPUT
SOURCE
SELECTOR
L
R
(L+R)/2
VOCAL
CUT
ALC
PHASE
SHIFTER
SURROUND
MIC
MIC
MIC VOL
ALC
MIC VOL
MIX
ECHO
ECHO VOL
FEEDBACK
VOL
MIX
Lch
MIX OUTPUT
Rch
MIX OUTPUT
MITSUBISHI
ELECTRIC
( 1 / 14 )
1 page  
PRELIMINARY M65854FP 50soNmoeticpear;aTmheistriisc
nlimotitas fainrealssupbejecicfitctaoticohna. nge.
DIGITAL ECHO
WITH
MITSUBISHI SOUND PROCESSOR ICs
MICROPHONE MIXING CIRCUIT
SE
KARAOKE
RI
E
S
ELECTRICAL CHARACTERISTICS
Symbol
Parameter
( Vcc=5V,f=1kHz,vi=100mVrms,Ta=25°C Unless otherwise noted )
Test conditions
Limits
Min Typ Max Unit
Icc Circuit current
No signal provided
— 35
mA
Gvo Amplifier gain
Vo = -17dBV
THD1 Distortion
THD2 Distortion
Vo = -17dBV,with ALC not operated —
Vi= -37dBV,with ALC operated
—
VoALC ALC operating voltage measurement : +2dBV
0
TALCAT ALC attack time
C=4.7µF
25
TALCRE ALC recovery time
C=4.7µF
1.0
VoMAX Maximum output voltage THD=10%
No Output noise voltage Gv=47dB,f=100 to 5KHz
1.2
—
Zi Input impedance
5
Gv I/O voltage gain
Volume max
-3
ATTmax Maximum attenuation Volume min
THD Distortion
Volume max
—
—
ViMAX Maximum input voltage THD=10%
No Output noise voltage JIS - A
1.3
—
Gv I/O voltage gain
Volume max
-3
ATTmax Maximum attenuation Volume min
—
THD Distortion
Volume max
VoMAX Maximum output voltage THD=10%
No Output noise voltage JIS - A
—
1.1
—
MITSUBISHI
ELECTRIC
47 dB
0.1 0.5
3.0 6.0
%
%
+2 +4 dBV
40 55 msec
1.5 2.0 sec
1.3 — Vrms
-68 -57 dBV
10 20 K
0 +3 dB
-72 -67 dBV
0.15 0.30 %
1.6 — Vrms
-96 -90 dBV
0 +3 dB
-72 -67 dBV
0.15 0.30 %
1.4 — Vrms
-96 -90 dBV
( 5 / 14 )
5 Page 
MITSUBISHI SOUND PROCESSOR ICs
M65854FP
50S E R I E S
KARAOKE
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
(5)ALC level diagram
Vo(dBV)
10
+2
0
-10
-20
-30
ALC OPERATING VOLTAGE SETTING RANGE
MICROPHONE AMPLIFIER GAIN SETTIG=47dB
-70 -60 -50 -40 -30 -20 -10
Vi(dBV)
(6) Input and output LPF for the digital echo
The input and output LPF for the digital echo are configured as shown.
figure below.
C2:1000pF
C1:4700pF
13 14
24k
15
Input
24k
24k
Output
The accuracy of the internal resistance of the IC is approximately ±30%
Cut-off frequency(fc) is given as follows.
fc= 1
2π X 24k X
1
=
C1 X C2
2π X 24k
X 4700pF X 1000pF
3.1KHz
Quality factor (Q) is given by the following equation for long echo.
Q=13
C1
C2
0.72 (Figure of 0.7 is recommended)
MITSUBISHI
ELECTRIC
( 11 / 14 )
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet M65854.PDF ] | |
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