M65845FP MITSUBISHI, M65845FP Datasheet
M65845FP
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M65845FP Summary of contents
Page 1
... 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. FEATURES •High performance digital echo circuit thanks to 16Kbit memory • ...
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... DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT IC INTERNAL BLOCK DIAGRAM MITSUBISHI SOUND PROCESSOR ICs M65845AFP MITSUBISHI ELECTRIC ( ...
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... REF 17 GND POWER SUPPLY DACONT 20 MITSUBISHI SOUND PROCESSOR ICs Pin Name Connect MIC1 MIC1 INPUT ALC1 CONTROL Connect C which determine recovery time Set up MIC1 amp gain for feedback circuit MIC1 OUTPUT Connect microphone volume which turn down input signal ...
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... ALC SUPPLY 35 VALC VOLTAGE CONTROL VCFIL VOCAL CUT FILTER 36 MITSUBISHI SOUND PROCESSOR ICs Forms integrator with external C Forms post lowpass filter with external CR for digital echo Connect microphone volume which turn down input signal Mixing output with line and microphone Mixing output with microphone and echo MIC SW L ...
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... Vi Input voltage Power dissipation Pd Operating temperature Topr Tstg Storage temperature RECOMMENDED OPERATING CONDITION Symbol Parameter Vcc Supply voltage L input voltage input voltage V iH MITSUBISHI SOUND PROCESSOR ICs M65845AFP Conditions Conditions Min 4.5 0 33,34PIN 4 MITSUBISHI ELECTRIC Unit Rations V 6 -0.3~Vcc+0.3 860 ...
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... V oMAX Noise voltage No Input impedance Noise voltage Gv Voltage gain V MAX Maximum output voltage o G Vocal rejection ratio REJ MITSUBISHI SOUND PROCESSOR ICs M65845AFP Conditions Min 25 No signal 44 Vo=-17dBV Vo=-17dBV,without ALC Vi=-27dBV,ALC operate at -10 ~ +3dBV - C=4.7µF 1.0 at C=4.7µF -1 THD=10% Gv=47dB,JIS-A,VI=0Vrms ...
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... Gv(max)=47dB,fcl=50Hz R1=0 ,C1=2.2µF Assuming Gv=37dB, fcl=15Hz,for instance, the constants take the following values. R1=3.3K ,C1=2.2µF << Attention point when M65845FP is replaced with M65845AFP >> 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. ...
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... ALC operation voltage can be formed within the limits of - dBV controlled by DC control voltage which connect 35 pin. (Setting up forms) half peak voltage V When ALC operation voltage is -5dBV -5dBV=0.56V rms V =2.5-0.8=1.7V ALC are concerned. MITSUBISHI SOUND PROCESSOR ICs -40 -30 v i(dBV) 35 pin control voltage V po (at Vcc=5V) =1.59V =0.80V p-p p-o ...
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... ALC operation voltage (dBV -10 (4) MIC SW Input low level to 31 pin (MIC SW) ,then microphone and echo signal can be cut. 31 pin (MIC SW OPEN L MITSUBISHI SOUND PROCESSOR ICs Vcc R17(51k) R16 C33(0.01µ pin control voltage VALC (V) 0.50 1.09 1.38 1.61 1.79 1.94 2.05 ECHO SIGNAL ...
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... 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 SOUND PROCESSOR ICs 34 AUDSW2;D2 Stereo L H Lch monaural ...
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... It is also having a function which through frequency under vocal level for supplying a lack of low level sound. fc= at fc=50Hz, C34=0.15µF is determined. Caution; Inside resistance is changeable one by one which rate is ±30%. MITSUBISHI SOUND PROCESSOR ICs Rvc=20k typ 36 C34 1 2 RvcC34 ...
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... MIC SW in order to suppress shock noise that the digital delay may produce. •At power up Reset Time •At switching on MIC SW MIC SW OFF switching on MIC SW MITSUBISHI SOUND PROCESSOR ICs M65845AFP fck = 2 MHz(Rc=51K ) Note: The delay time(Td) for echo is determined by the clock frequency(fck). ...
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... 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= LPF1 REF 12 R8 C14 24k R7 24k R9 C13 MITSUBISHI SOUND PROCESSOR ICs • R9 • C13 • C14 13 R7 24k 24k MITSUBISHI ELECTRIC M65845AFP LPF2 REF ...
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... 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. ...
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... MICOUT 11 24k 0.047µ 24k LPF1IN 12 1000p 24k LPF1OUT 13 ADINTIN 14 0.068µ ADINTOUT 15 ADCONT 16 0.1µ REF 17 47µ GND 18 MITSUBISHI SOUND PROCESSOR ICs M65845AFP 0.15µ VCFIL 36 VALC 35 AUDSW2 34 D2 AUDSW1 33 D1 CLOCK 32 CONT MICSW 31 MIC SW MICECHO 30 OUT 2.2µ LLINEOUT 29 2.2µ ...