View M65845_136047.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
DESCRIPTION
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
The M65845AFP 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. Being pin compatible with the M65845FP,the M65845AFP is suitable for upgrading the series.
PIN CONFIGURATION
MIC1 INPUT 1 ALC1 CONTROL 2 36 VOCAL CUT FILTER 35
ALC SUPPLY VOLTAGE CONTROL
FEATURES
*High performance digital echo circuit thanks to 16Kbit memory *Two microphone-mixing lines,vocal cut circuit,digital echo, and line-mixing amplifier are contained,enabling singlechip package of microphone peripheral circuit of "Karaoke" equipment. *ALC-equipped microphone amplifiers permit excessively high-input. ALC operating voltage can be set as desired. *Vocal cut circuit of complete stereo construction *Compatibility with the M65845FP *Built-in current-control oscillation circuit *Built-in automatic reset circuit activated with power on *Single power supply (5V)
MIC1 NF INPUT 3 MIC1 OUTPUT 4
34 AUDIO SW2 33 AUDIO SW1
M65845AFP
36P2R
MIC1 VOLUME INPUT 5 MIC2 INPUT 6 ALC2 CONTROL 7 MIC2 NF INPUT 8 MIC2 OUTPUT 9 MIC2 VOLUME INPUT 10 MIC OUTPUT 11 LOWPASS FILTER1 INPUT 12 LOWPASS FILTER1 OUTPUT 13 A/D INTEGRAL INPUT 14 A/D INTEGRAL OUTPUT 15 A/D CONTROL 16 REFERENCE 17 GND 18
32 CLOCK CONT 31 MIC SW 30 MICECHO OUTPUT 29 Lch LINE OUTPUT 28 Rch LINE OUTPUT 27 Lch LINE INPUT 26 Rch LINE INPUT 25 ECHO VOLUME INPUT 24 LOWPASS FILTER2 OUTPUT 23 LOWPASS FILTER2 INPUT 22 D/A INTEGRAL OUTPUT 21 D/A INTEGRAL INPUT 20 D/A CONTROL 19 POWER SUPPLY
RECOMMENDED OPERATING CONDITION
Supply voltage range**********Vcc=4.5~5.5V Rated supply voltage********** Vcc=5V
SYSTEM CONFIGURATION
AUDIO SW Lch INPUT
SOURCE SELECTOR L R VOCAL CUT
MIX
Lch OUTPUT
Rch INPUT
MIX
ALC
MIC1 MIC VOL MIX DIGITAL ECHO MIC VOL MIC VOL ECHO VOL MIX
Rch OUTPUT MIC SW
ALC
MIC2
MITSUBISHI ELECTRIC
( 1 / 15 )
P
h etric e;T otic param Ne som
AUDSW1 AUDSW2 VCFIL CLOCK CONT 32 17 19 29 Lout 18 36 34 REF 33
Vcc
GND
I je a L I Ms notlia fitin are sub s R E is i m
Lin 27
Rin 26 28 Rout
AUDIO SOURCE CONTROL 1/2Vcc
31 MIC SW
.
VALL 35
a RlY ecificcttitoonchange N A sp
MIC1IN
1
.
MIC1NFIN
3
MIC1OUT
4
CLOCK GENERATOR
16KRAM
30 MICECHO OUT
IC INTERNAL BLOCK DIAGRAM
ALC
ALC1 2
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
MITSUBISHI ELECTRIC
MIC1 VOLIN
5
MIC2IN
6
LOGIC
REF LPF1 A/D D/A REF LPF2
MIC2NFIN MIC2OUT
8
9
ALC
ALC2 11 MIC LPF1 OUT IN 12
7 25 13 16 14 15 20 21 22 23 24 LPF1 DAINTOUT DACON LPF2OUT ECHOVOLIN ADINTIN OUT LPF2IN DAINTIN ADCONT ADINTOUTT
M65845AFP
MIC2 VOLIN
10
MITSUBISHI SOUND PROCESSOR ICs
( 2 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
PIN DESCRIPTION No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol MIC1IN ALC1 MIC1NFIN MIC1OUT MIC1VOLIN MIC2IN ALC2 MIC2NFIN MIC2OUT Pin Name
MIC1 INPUT ALC1 CONTROL MIC1 NF INPUT Set up MIC1 amp gain for feedback circuit MIC1 OUTPUT MIC1 VOLUME INPUT MIC2 INPUT ALC2 CONTROL MIC2 NF INPUT Forms MIC 2 amp gain with feedback MIC2 OUTPUT Connect microphone volume which turn down input signal Mixing output with MIC 1 and MIC 2 Connect microphone volume which turn down input signal Connect MIC 2 Connect MIC1 Connect C which determine recovery time
Function
Connect C which determine ALC attack ,recovery time
MIC2VOLIN MIC2 VOLUME INPUT MICOUT LPF1 IN LPF1 OUT ADINTIN ADINTOUT ADCONT REF GND VCC DACONT
MIC OUTPUT LOWPASS FILTER1 INPUT LOWPASS FILTER1 OUTPUT A/D INTEGRAL INPUT
Forms the front lowpass filter with external CR for digital echo
Forms integrator with external C and R A/D INTEGRAL OUTPUT A/D CONTROL REFERENCE GND POWER SUPPLY D/A CONTROL ADM A/D adaptive control ADM A/D adaptive control
1/2Vcc, connect filter C
MITSUBISHI ELECTRIC
( 3 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
No 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
Symbol DAINTIN DAINTOUT LPF2 IN LPF2 OUT ECHOVOLIN RLINEIN LLINEIN RLINEOUT LLINEOUT
MICECHOOUT
Pin name
D/A INTEGRAL INPUT
Function
Forms integrator with external C
D/A INTEGRAL OUTPUT LOWPASS FILTER'2 INPUT LOWPASS FILTER2 OUTPUT ECHO VOLUME INPUT Rch LINE INPUT
Forms post lowpass filter with external CR for digital echo Connect microphone volume which turn down input signal
Lch LINE INPUT Rch LINE OUTPUT Mixing output with line and microphone Lch LINE OUTPUT Mixing output with microphone and echo L; Microphone OFF H; Microphone ON
MIC ECHO OUTPUT MIC SW CLOCK CONTROL AUDIO SW1
MICSW
CLOCK CONT
Controls built-in clock generation circuit with external R
AUDSW1 AUDSW2 VALC VCFIL
Changing source sound signal AUDIO SW2 ALC SUPPLY VOLTAGE CONTROL VOCAL CUT FILTER Forms ALC operation voltage with control voltage Through frequency under vocal level
MITSUBISHI ELECTRIC
( 4 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(Ta=25C,unless otherwise noted)
Symbol Vcc Parameter Supply voltage Circuit current Input voltage Power dissipation Operating temperature Storage temperature
Conditions
Rations
Unit V mA
Icc Vi
Pd Topr Tstg
6.0 85
-0.3~Vcc+0.3
V
mW C C
860 -20~+75 -40~+125
RECOMMENDED OPERATING CONDITION
Symbol
Parameter Supply voltage L input voltage H input voltage
Conditions
Min
Limits Typ
Max
Unit V V V
Vcc
ViL ViH
4.5
33,34PIN 0
5
5.5 1
Vcc
4
MITSUBISHI ELECTRIC
( 5 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
ELECTRICAL CHARACTERISTICS
(Vcc=5V,f=1kHz,Vi=100mVrms,fck=2MHz,Ta=25C ,unless otherwise noted) Limits Symbol
T/L
Parameter
Conditions
No signal Vo=-17dBV Vo=-17dBV,without ALC Vi=-27dBV,ALC operate at -10 ~ +3dBV at C=4.7F at C=4.7F THD=10% Gv=47dB,JIS-A,VI=0Vrms
Min
Typ
Max
Unit
Icc GVO
Circuit current
Voltage gain
MICROPHONE AMPLIFIER
25 44
34 47 0.5 3.0
70 50 1.5 6.0 +3 55 2.0 -57 20 226 3.0 4.0 -67 +3 0.1 -88 40 -72 +3
mA dB % % dB ms s dBV dBV k ms dB % dBV dBV dB % dBV dBV k dBV dB dBV dB
THD1 Distortion1 THD2 Distortion2 VoALC ALC voltage TALCAT ALC Attack time TALCRE ALC Recovery time VoMAX No Zi Td Gv THD VoMAX No Gv THD VoMAX No Zi No Gv VoMAX GREJ
Maximum output voltage
-3 25 1.0 -1 5
0 40 1.5 2 -68 10 197 0 2.0 1.0 -82 0 0.02 4 -97 20 -95 0 4 18
Noise Voltage
input impedance Delay Time Voltage gain Distortion
Maximum output voltage
Rc=51k
167 -3.0
ECHO
THD=10% JIS-A
-3 -3
Noise voltage Voltage gain Distortion
Maximum output voltage
LINE
THD=10% JIS-A,MICSW=off
1 10
Noise voltage Input impedance Noise voltage Voltage gain
Maximum output voltage
VOCAL CUT
JIS-A,Vocal cut ON input one side channel THD=10%
-3 1 14
Vocal rejection ratio
MITSUBISHI ELECTRIC
( 6 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
FUNCTION DESCRIPTION
(1) Microphone amplifier The gain(Gv) and low cut-off frequency(fcl) of microphone amplifier are expressed as follows. REF 1F MIC 5k 1.5k
3 4 2
R1+1.5K+334K fcl= 1 Gv=20log* 2*(R1+1.5K)*C1 R1+1.5K Gv(max)=47dB,fcl=50Hz R1=0,C1=2.2F Assuming Gv=37dB, fcl=15Hz,for instance, the constants take the following values. R1=3.3K,C1=2.2F
10k(typ)
334k
R1 C1
<< Attention point when M65845FP is replaced with M65845AFP >> REF R3 and C4 are required for the M65845FP, not for the M65845AFP. As mentioned above, the gain of microphone amplifier can set it up with R1. 1F MIC R2
3 2
10k(typ)
C4 R3 R1 C1
4
R3 and C4 are not required for the M65845AFP. R1 for the gain of microphone amplifier setting in use M65845AFP
Recommended circuit In use M65845FP
MITSUBISHI ELECTRIC
( 7 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
(2) ALC level block diagram
vo(dBV)
10 ALC supply voltage control limits +3 0
-10
-20
It is set 47dB for microphone amplifier gain.
-30 -60 -50 -40 -30 -20 -10
vi(dBV)
(3) ALC operation voltage control ALC operation voltage can be formed within the limits of -10 to +3 dBV controlled by DC control voltage which connect 35 pin. (Setting up forms)
2.5V( 1 Vcc) 2 internal direct bias half peak voltage Vpo 35 pin control voltage VALC 0V When ALC operation voltage is -5dBV (at Vcc=5V) -5dBV=0.56Vrms=1.59Vp-p=0.80Vp-o VALC=2.5-0.8=1.7V are concerned.
MITSUBISHI ELECTRIC
VALC= 1 Vcc-Vpo 2
( 8 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
Input impedance to 35 pin is so high (1M) that ALC base voltage can be determined by division resistance. Vcc R17(51k)
35
R16 C33(0.01 )
at Vcc=5V
ALC operation voltage (dBV) 35 pin control voltage VALC (V)
resistance R16 ()
+3 0 -2 -4 -6 -8 -10
0.50 1.09 1.38 1.61 1.79 1.94 2.05
5.6k 15k 20k 24k 27k 33k 36k
(4) MIC SW Input low level to 31 pin (MIC SW) ,then microphone and echo signal can be cut. 31 pin (MIC SW) H or OPEN L MIC SW ON OFF
ECHO SIGNAL OUTPUT
ON MUTE
MITSUBISHI ELECTRIC
( 9 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
(5) Audio source select Changing the switch ,sound source changes four patterns matching with KARAOKE soft. 33 AUDSW1;D1 34 AUDSW2;D2 Movements Stereo Lch monaural Rch monaural vocal cut
L L H H
1 Stereo
L H L H
Under the conditions usual 2channels are played back to each outputs.
2 Lch monaural Under the conditions Lch source is played back to 2ch outputs and suitable for KARAOKE reproduction of multiple KARAOKE soft and main sound reproduction of laser disks. 3 Rch monaural Under the conditions Rch source is played back to 2ch outputs and suitable for reference vocal reproduction of multiple KARAOKE soft and sub sound reproduction of laser disks.
MITSUBISHI ELECTRIC
( 10 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
4 Vocal cut It is a method turned down Lch and Rch input having the same phase and sound . Lowpass cut off frequency fc is determined by a capacitance which connect to 36 pin (vocal cut filter). It is also having a function which through frequency under vocal level for supplying a lack of low level sound.
Rvc=20k typ 36 C34 1 2RvcC34
fc=
at fc=50Hz, C34=0.15F is determined. Caution; Inside resistance is changeable one by one which rate is 30%.
MITSUBISHI ELECTRIC
( 11 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
(6) Digital Echo 1 Clock oscillator circuit This IC incorporates a current control type clock oscillator circuit in it, thus providing circuit configuration just by connecting an Rc for current control pin 32 (CLOCK CONT). Fully internal clock supply prevents occurrence of undesired radiation without affecting any external circuit. The oscillator frequency fck is following. fck = 2 MHz(Rc=51K)
Note: The delay time(Td) for echo is determined by the clock frequency(fck).
Rc
DC Current 32 Clock oscillator circuit
Delay time=1/fckX24XN (N=the number of memory bits = 16384 fck = 2 MHz(Rc=51K) : Delay time=197msec fck = 2.6MHz(Rc=39K) : Delay time=150msec fck = 3.9MHz(Rc=24K) : Delay time=100msec
Clock frequency:fck
2A@Auto mute function The IC carries out auto mute function at the time of powering up and switching on MIC SW in order to suppress shock noise that the digital delay may produce. *At power up
Reset Time
Mute time (400msec)
*At switching on MIC SW
MIC SW OFF
Mute time (400msec)
switching on MIC SW
MITSUBISHI ELECTRIC
( 12 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
3 Input and output LPF Signal through frequency fsig is also determined by LPF of Digital Echo cut off frequency. 2 degree LPF of Digital Echo is formed by external resistance and capacitor . (refer to next figure) So, cut off frequency is determined by next formula.
fsig= 2
1 R8 * R9 * C13 * C14
LPF1
REF
LPF2
REF
12
13
23
24
R7 24k
R8 C14 24k R9 24k
R7 24k
R8 C14 24k R9 24k
C13
C13
MITSUBISHI ELECTRIC
( 13 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
COMPATIBILITY WITH M65845FP
M65845FP>
5k MIC1
Units Resistance : Capacitance:F
0.15 0.01 51k VCC 24k D2 D1 39k
*2
0.22 4.7
1
MICIN
VCFIL 36 VALC 35 AUDSW2 34 AUDSW1 33 CLOCK 32 MICSW 31
MIC SW 2.2
2 ALC1
0.33 2.2k
*1
200p 0.1
3 MIC1NFIN 4 MIC1OUT 5 MIC1VOLIN
*2
*2
5k
150k 0.1 *2 30k
*1
*2
VCC
MIC2
*2
0.33 2.2k
0.22
6 MIC2IN
4.7
100p
*1
M65845AFP
7
*1
ALC2
MICECHO 30 OUT LLINEOUT 29
8 MIC2NFIN
200p *1 0.1
Lout 2.2 Rout 1 Lin 1 Rin *2 30k *2 *1 3k 2700p 0.1 0.047
*2
150k 0.1 *2 30k
9 MIC2OUT
RLINEOUT 28 LLINEIN 27 RLINEIN 26 ECHO VOLIN 25 LPF2OUT 24 LPF2IN 23
10k 0.1
10 MIC2VOLIN
*2 15k
*2
0.027
11 MICOUT 12 LPF1IN
10k 15k
2700p
13 LPF1OUT 14 ADINTIN
0.068 30
*1
15k 0.027 15k 0.068
*1
0.22
15 ADINTOUT 16 ADCONT 17 REF
DAINTOUT 22 DAINTIN 21 DACONT 20
0.22
*2
47
18 GND
VCC 19
0.1 100
VCC
*2
Feed Back
0.15 30k
As mentioned above, the M65845AFP can be replaced with the M65845FP without changing the board.
Note
*1: The components marked with a circle are required for the M65845FP, not for the M65845AFP. *2: The M65845AFP is different from the M65845FP a part of the components marked with a circle.
MITSUBISHI ELECTRIC
( 14 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
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 1 MIC1 4.7 0.15
1
MICIN
VCFIL 36 VALC 35 AUDSW2 34 AUDSW1 33 CLOCK 32 CONT MICSW 31 MICECHO OUT 30 LLINEOUT 29
2.2 D2 D1
0.01 51k VCC 24k
2 ALC1
2.2
3
1 5k 30k MIC2 1 2.2 4.7
MIC1NFIN
4 MIC1OUT
1
51k VCC
5 MIC1VOLIN 6 MIC2IN 7 ALC2
M65845AFP
MIC SW 2.2 Lout Rout 1 Lin 1 Rin 30k 1 1 1000p 24k 0.047 24k 0.068
8 MIC2NFIN
1
9 MIC2OUT
1
RLINEOUT 28 LLINEIN 27 RLINEIN 26 ECHO VOLIN 25 LPF2OUT 24 LPF2IN 23
24k
10 MIC2VOLIN
30k 0.047 24k 24k 24k
11 MICOUT 12 LPF1IN
1000p
13 LPF1OUT 14 ADINTIN
0.068
15 ADINTOUT 16 ADCONT
0.1
DAINTOUT 22 DAINTIN 21 DACONT 20
0.1
17 REF
47
18 GND
VCC 19
0.1 100
VCC
Feed Back
0.15 50k
Units Resistance : Capacitance:F
MITSUBISHI ELECTRIC
( 15 / 15 )

▲Up To Search▲

Price & Availability of M65845

	To Download M65845 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .