ubje fina notlia specificattioo change M65855FP SERIES

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ubje fina notlia specificattioo change M65855FP SERIES

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M65855FP
SERIES
KARAOKE
Chip Digital Echo with Microphone mixing Amplifier
DESCRIPTION
M65855FP CMOS built-in Digital Echo function with microphone mixing circuits KARAOKE equipment packed single chip. suitable KARAOKE equipments such Video Player,Mini stereo,CD Radio cassette,TV VCR.
FEATURES
Internal Input/Output pass filter,A/D,D/A converters,microphone mixing amplifier,memory achieve digital echo system with single chip. High performance digital echo circuit thanks 20Kbit memory Thanks improvement A/D,D/A converters,decrease external output Internal echo mute circuit echo volume achieve mixing level control Built-in current control oscillation circuit generating clocks Delay time =164msec (Min.15ms max. set) Small 16-Pin Flat package (16P2N) Built-in automatic reset circuit with power turned single power supply
Package Outline
Outline 16P2N
RECOMMENDED OPERATING CONDITIONS
Supply voltage Rated supply
SYSTEM CONFIGURATION
VOCAL CONTROL BASS BASS
MIC1
ECHO M65855FP ECHO
MIC2
MITSUBISHI ELECTRIC
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M65855FP
SERIES
KARAOKE
CONFIGURATION
ECHOVOL LPF2 LPF2
CLOCK ECHOMUTE
M65855FP
LPF1 LPF1
MITSUBISHI ELECTRIC
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M65855FP
SERIES
KARAOKE
INTERNAL BLOCK DIAGRAM
CLOCK ECHOMUTE ECHOVOL
OSCILLATOR
LPF2
CLOCK
AUTO RESET
RESET
MAIN CONTROL
20Kbit SRAM
LPF1
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M65855FP
SERIES
KARAOKE
DESCRIPTION
Symbol ECHOVOL LPF2 LPF2 LPF1 LPF1 ECHOMUTE CLOCK
Name
Echo Volume control
Function
Echo level control with external voltage (from -10,- steps) connect output filter capacitor
Reference
Opeamp input Opeamp output
pass filter input pass filter output Microphone mixing output Microphone input pass filter input pass filter output
Uses external form conversion integrator
Uses external form pass filter input side
Mixing output echo output microphone Microphone input
Uses external form pass filter input side
Opeamp output Opeamp input
Uses external form conversion integrator
Power Supply
Echo mute control
Applies voltage 3.5V 5.5V(Rated5V) Echo mute control clock stop control with external voltage
Controls built-in clock generation circuit with external
Clock control
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M65855FP
SERIES
KARAOKE
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Supply voltage Circuit current Power dissipation Operating temperature Storage temperature
(Ta=25°C,unless otherwise noted) Ratings Unit
Test conditions
Topr Tstg
-20~75 -40~125
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter Supply voltage input voltage "Ref" input voltage "H"input voltage
Test conditions
Min.
Limits Typ.
Max.
Vcc-1
Unit
1/2Vcc-0.5 1/2Vcc+0.5
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M65855FP
SERIES
KARAOKE
ELECTRICAL CHARACTERISTICS otherwise noted)
Limits Symbol
TOTAL
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Circuit current When signal provided
Voltage gain between input output
-6.5
V(rms)
RL=47k
-3.5 -0.5
Vomax Maximum output voltage THD=10%
ECHO
Output distortion 30kHz
Output noise voltage JIS-A
Clock frequency Rc=120k Delay time
Voltage gain between input output
Rc=120k
RL=47k
-3.0
V(rms)
Vomax Maximum output voltage THD=10% Output distortion 30kHz
Output noise voltage JIS-A,ECHO=Mute
0.05 0.10
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M65855FP
SERIES
KARAOKE
FUNCTION DESCRIPTION
Clock oscillator circuit M65855FP incorporates current control type clock oscillator circuit thus providing circuit configuration just connecting resistor current control CLOCK. Fully internal clock supply prevents occurrence undesired radiation without affecting external circuit When Rc=120k fck=1MHz
Clock oscillator circuit
Delay time delay time calculated equation; Td=N/fs (N=The number memory bits=20480) when fck=1MHz,Td 164ms.
clock frequency
<<Reference>>The M65855FP adopts (adaptive Delta Modulation) system A/D,D/A converters. sampling frequency calculated following equation; fs=clock frequency /8(Hz) clock frequency fck=1MHz, calculated sampling frequency fs=1MHz/8=125kHz
Mute When power When power turned mute function works automatically prevent noise generation. (Here,however,"mute" means function which prevents noise generation after reset time.)
Power time
Reset period
internal mode setting time
Mute time
(about 260msec)
Mute time
(a)When power fck=1MHz)
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M65855FP
SERIES
KARAOKE
When mute signal input Delay output mute control from supply voltage. (Please refer following) supply voltage H(Vcc-1V) Ref(1/2 Vcc±0.5V) L(1.0V) Mode
Normal mode Mute mode (clock stop +Microphone output mute) Mute(clock stop)
When setting change from mute normal mode,it also mute function work same time setting.
change time
internal mode (about setting time
Mute time mute 260msec)time change setting (fck=1MHz)
(b)Mute
change time
Mute time mute (about 260msec)time change setting (fck=1MHz)
(c)Mute
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M65855FP
SERIES
KARAOKE
Input/Output necessary change setting (signal pass band;fsig)of digital echo according clock frequency.
fsig=
20log
C2=4700pF, frequency voltage gain following. fsig= 2.3KHz -6dB
recommend voltage gain ,D/A signal pass band, please refer table below. Delay time 164msec (When Master clock 1MHz)) Signal pass band 3KHz Gain -6dB Signal pass band 3KHz Gain +3dB
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M65855FP
SERIES
KARAOKE
APPLICATION EXAMPLE
0.012µ Echo Mute 120K 0.01µ 4700p 100µ 8.2k
LPF1
LPF1
CLOCK
3300p ECHO Volume 0.01µ 1.0µ 0.01µ 4.7k 2.2µ
MITSUBISHI ELECTRIC
ECHO ECHO
Unit Resistance: Capacitor:F
ECHO MUTE
ECHOVOL
LPF2
LPF2

ubje fina notlia specificattioo change M65855FP SERIES

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