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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
50
SERIES
KARAOKE
DESCRIPTION
The M65850P/FP is a CMOS IC for generating echo to be added to the voice through a "karaoke" microphone. It is optimal to provide the echo effect function for karaoke player, such as radio cassette recorders, mini audio components and television sets. Increased master clock frequency assures high-performance short delay,enabling the IC to be used for dolby prologic surround system.
FEATURES
* Built-in input/output filters, A-D and D-A converters,and memory realize a delay system with only a single chip. * Built-in current control type clock oscillator circuit avoids clock affection outside,thus allowing prevention of undesired radiation. * Delay time = 164 ms (with master clock set at 1MHz) (Selection of delay time in a range between 15ms and 200ms) * Small package (14-pin DIP : 14P4,16-pin SOP:16P2N) * Built-in 20Kbit SRAM * Built-in auto reset circuit (The IC reset as power is turned on) * Single power supply (5V)
PACKAGE
Outline 1 4 P 4 ( P )
2.54mm pitch 300mil DIP
RECOMMENDED OPERATING CONDITION
Supply voltage range * * * * * Vcc=3.5~5.5V Rated supply voltage * * * * * * * * * * Vcc=5V
Outline 1 6 P 2 N ( FP )
1.27mm pitch 300mil SOP
SYSTEM CONFIGURATION
RAM L VOCAL CUT R HPF LPF HPF KEY CONTROL MIX BASS MIX R MIX BASS MIX L
MIC1
MIC AMP
MIC VOL MIX MIC VOL
MIC AMP
MIX ECHO ECHO VOL
MIC2
M65850P/FP
Note : Dolby is the registered trademarks of dolby laboratories licensing corporation. MITSUBISHI ELECTRIC
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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
50
SERIES
KARAOKE
PIN CONFIGURATION
< M65850P > LPF1 IN LPF1 OUT OP1 OUT OP1 IN CC1 CC2 GND 1 14 VCC 14
M65850P
2
3 4 5 6 7
13 CLOCK 12 REF 11 OP2 IN 10 OP2 OUT 9
8
LPF2 IN LPF2 OUT
< M65850FP > NC LPF1 IN LPF1 OUT OP1 OUT OP1 IN CC1 CC2 GND 1 2
3 4 5 6 7 8
14 16
NC
MITSUBISHI ELECTRIC
M65850FP
15 VCC 14 CLOCK 13 REF 12 OP2 IN 11 OP2 OUT 10 LPF2 IN 9 LPF2 OUT
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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
50
SERIES
KARAOKE
IC INTERNAL BLOCK DIAGRAM < M65850P >
CLOCK 13 REF 12 1/2 Vcc CLOCK AUTO RESET DO1 RESET MAIN CONTROL D1 A/D LPF1 1 2 3 4 LPF1IN LPF1OUT OP1OUT OP1IN 5 CC1 7 14 GND VCC DO0 MO MI 20Kbit SRAM OSCILLATOR CC2 OP2IN OP2OUT LPF2IN LPF2OUT 6 11 10 9 8 D/A LPF2
< M65850FP >
REF 13 1/2 Vcc NC 16 NC 1 AUTO RESET
CLOCK 14 OSCILLATOR
CC2 OP2IN OP2OUT LPF2IN LPF2OUT 7 12 11 10 9 D/A LPF2
CLOCK DO1 MO RESET MAIN CONTROL MI D1 DO0 A/D
20Kbit SRAM
LPF1 2 3 4 5 LPF1IN LPF1OUT OP1OUT OP1IN 6 CC1 8 15 GND VCC
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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
50
SERIES
KARAOKE
PIN DESCRIPTION
Pin No.
P 1 2 3 4 5 6 7 8 9 10 11 12 13 14 -
FP 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 16
Symbol LPF1 IN LPF1 OUT OP1 OUT OP1 IN CC1 CC2 GND LPF2 OUT LPF2 IN OP2 OUT OP2 IN REF CLOCK VCC NC
Name
Low pass filter 1 input Low pass filter 1 output
I/O I O O I O I O I I -
Function
To form input-side low pass filter by connecting external capacitor and resistor
Operational amplifier1 output Operational amplifier 1 input Current control 1 Current control 2 GND
Low pass filter 2 output Low pass filter 2 input
To form A-D conversion integrator by connecting external capacitor
ADM control of A-D converter ADM control of D-A converter
To form input-side low pass filter by connecting external capacitor and resistor
Operational amplifier 2 output Operational amplifier 2 input Reference Clock generator input Supply voltage No connection
To form D-A conversion integrator by connecting external capacitor Analog reference voltage * 1/2Vcc
*
To form clock generator by connecting external resistor To apply 3.5 ~ 5.5 V power (Rated voltage : 5 V)
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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
50
SERIES
KARAOKE
ABSOLUTE MAXIMUM RATINGS
( Ta = 25C, unless otherwise noted ) Symbol Vcc Parameter Supply voltage Circuit current Power dissipation Operating temperature Storage temperature Conditions Ratings Unit V mA mW C C
Icc
Pd Topr Tstg
6.0 100
800(P),550(FP)
-20 ~ 75 -40 ~ 125
RECOMMENDED OPERATING CONDITION
Limits Typ
Symbol
Parameter Supply Voltage Clock frequency
Conditions
Min
Max
Vcc fck
3.5 0.8
5
5.5 11.0
Unit V MHz
ELECTRICAL CHARACTERISTICS (Vcc=5V,f=1kHz,Vi=100mV(rms),fck=1MHz,Ta=25C, unless otherwise noted)
Limits Symbol Parameter Circuit current Voltage gain Maximum output voltage Total harmonic distortion Test conditions No signal input RL=47k THD=10% 30kHz LPF Min Typ Max Unit
Icc Gv Vomax THD No fck
5 -3.0 0.7
13 0 1.0 1.2 -85
25 3.0
mA dB V(rms)
3.0 -70 1.15
% dBV MHz
Output noise voltage DIN-AUDIO Clock frequency Rc=120k
0.85
1
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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
50
SERIES
KARAOKE
FUNCTION DESCRIPTION
(1) Delay time Td The delay time can be calculated by the equation : Td=8N / fck ( N=the number of memory bits=20480 ) When fck=1MHz ( fs=125kHz), Td can be set at 164ms. Reference The M65850P/FP adopts ADM ( Adaptive Delta Modulation ) system in A-D,D-A converters. The sampling frequency can be calculated by the following equation : fs=clock frequency / 8 ( Hz ) For clock frequency ( fck )=1MHz, the calculated sampling frequency is : fs=1MHz / 8 =125kHz (2) Clock oscillator circuit The M65850P incorporates a current control type clock oscillator circuit in it, thus providing circuit configuration just by connecting a resistor for current control to pin 13 ( FP:pin 14 ) CLOCK. Fully internal clock supply prevents occurrence of undesired radiation without affecting any external circuit. The oscillator frequency is: fck = 1 MHz. ( Rc=120k ) The resistor for current control can be calculated using the following equation. Rc * * K/Clock frequency (fck) [ Hz ] K is the coefficient, and changes according to clock frequency ,as shown below. Vcc
Rc
*
13
(FP:14)
*
Clock oscillator circuit
Clock frequency : fck
Delay Time ( ms ) 15~30 31~100 101~200
Clock Frequency ( Hz ) 11.0M~5.5M 5.3M~1.64M 1.62M~800K
K value
0.8 X 10 1.0 X 10 1.2 X 10
11
Rc ( )
7.5k~15k 18k~62k 75k~150k ( 6 / 11 )
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MITSUBISHI ELECTRIC
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h etric e;T otic param N e som
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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
50
SERIES
KARAOKE
(3) Input/output LPF It is necessary to change the LPF setting ( signal pass band,fsig ) of digital echo according to the clock frequency. ( Refer to the table below )
LPF1
REF
LPF2
REF
1* *
(FP:2)
2* * (FP:3) C2
9* *
(FP:10)
8* C2 *(FP:9)
R2 R1
R1 C1
R2 R1
R1 C1
***
fsig=
2
1 C1 * C2 * R1 * R2
Delay time Clock signal pass LPF frequency( Hz ) band ( Hz ) ( ms ) R1( ) R2 ( ) C1 (F) C2 (F) 15~30 31~100 101~200
11.0M ~ 5.5M 5.3M ~ 1.64M 1.62M ~ 800k
(Reference value) (%)
Distortion
7k 5k 3k
15k 13k 16k
15k 13k 16k
3300p 680p 4700p 1000p
0.2%
(Td=20ms)
0.3%
(Td=50ms)
1.2% 6800p 1500p (Td=160ms)
*Test Condition is Vcc=5V,Vi=100mV(rms),f=1kHz,Ta=25C
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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
50
SERIES
KARAOKE
(4) Mute When power is turned on, the mute function works automatically to prevent noise generation. (Here, however, "mute" means the function which prevents noise generation after the reset time.)
POWER ON TIME
RESET PERIOD
MUTE PERIOD (ABOUT 260ms)
MUTE OFF TIME
WHEN POWER IS ON (fck=1MHz)
TEST CONDITIONS
Symbol Icc Gv
Parameter Circuit current
Voltage gain between input and output
S1 S14 2 1 1 1 2 2 1 1 1 1
Remarks
No-signal time RL=47k THD=10%
Vomax Maximum output voltage THD No Output distortion Output noise voltage
30kHz LPF DIN-AUDIO
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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
50
SERIES
KARAOKE
TEST CIRCUIT < M65850P >
(2) S14 (1) + 12 11 10
OP2 OUT OP2 IN REF
0.068
16k 16k
6800p + 16k 1500p 9 8
LPF2 OUT LPF2 IN
47k 1
47 +
0.1 14
120k 47 13
~
Vo
LPF1 OUT CLOCK
VCC
OP1 OUT
LPF1 IN
OP1 IN
CC1
1
4
2
3
5
6
CC2
1500p 51 16k 1 16k (2) + (1) S1 16k 6800p 0.22 0.22 0.068
~ Vi
< M65850FP >
(2)
7
GND
S14 (1) + 13
0.068
16k 16k
6800p + 1 16k 1500p
47k
47 +
0.1 16 15
120k 47 14
12
11
10
9 8
GND LPF2 OUT
~
Vo
OP2 OUT
LPF1 OUT CLOCK
OP1 OUT
LPF1 IN
OP1 IN
CC1
NC
2
3
5
1
6
1500p 51 16k 1 16k (2) (1) S1 6800p Vi + 16k 0.22 0.22 0.068 Units Resistance : Capacitance:F MITSUBISHI ELECTRIC
~
4
7
CC2
LPF2 IN
OP2 IN
VCC
REF
NC
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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
50
SERIES
KARAOKE
APPLICATION EXAMPLE * ECHO Delay time 164ms (Signal pass band 3kHz) < M65850P >
0.068 120k 47 13 14 16k 16k + 12 11 10
OP2 OUT OP2 IN REF
6800p + 16k
OUT 1
47 +
0.1
1500p 9
LPF2 IN LPF2 OUT
LPF1 OUT CLOCK
VCC
OP1 OUT
LPF1 IN
OP1 IN
CC1
1
4
2
3
5
6
CC2
1500p IN 1 + 6800p 16k 16k 16k 0.068 0.015 50k FEEDBACK GAIN SETTING VOLUME 0.068 16k 16k + 13 12 11
OP2 OUT OP2 IN
0.22 0.22
< M65850FP >
7
GND
8
6800p + 16k 1
OUT
47 +
0.1 16 15
120k 47 14
1500p 10
LPF2 IN LPF2 OUT
LPF1 OUT CLOCK
VCC
OP1 OUT
LPF1 IN
REF
NC
OP1 IN
CC1
2
3
5
1
4
6
7
CC2
NC
1500p IN 1 + 16k 6800p 0.015 50k 16k 16k 0.068 0.22 0.22
8
GND
9
Units Resistance : Capacitance : F
FEEDBACK GAIN SETTING VOLUME MITSUBISHI ELECTRIC
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MITSUBISHI SOUND PROCESSOR ICs
M65850P/FP
DIGITAL ECHO(DIGITAL DELAY)
Delay time 20ms ( Signal pass band 7kHz )
50
SERIES
KARAOKE
* SURROUND < M65850P >
0.047
15k 15k
3300p + 15k
OUT 1
47 +
0.1 14
11k 47 13
+ 12 11 10
OP2 OUT OP2 IN REF
680p 9
LPF2 IN LPF2 OUT
LPF1 OUT CLOCK
VCC
OP1 OUT
LPF1 IN
OP1 IN
CC1
1
4
2
3
5
6
CC2
680p IN 1 + 3300p 15k 15k 15k 0.047 0.15 0.15
< M65850FP >
0.047 11k 47 15 14 15k 15k + 13 11 12
OP2 OUT LPF2 IN OP2 IN
7
GND
8
3300p + 15k 1
OUT
47 +
0.1 16
680p 10 7
CC2 LPF2 OUT
LPF1 OUT CLOCK
VCC
OP1 OUT
LPF1 IN
REF
NC
OP1 IN
NC
2
3
5
1
4
6
CC1
680p IN 1 + 15k 3300p 15k 15k 0.047 0.15 0.15 Units Resistance : Capacitance : F
MITSUBISHI ELECTRIC
8
GND
9
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