. e ion Y icat o chang f R i c e N A l sp ct t P . MITSUBISHI SOUND PROCESSOR ICs M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som M65850P/FP 50 SERIES DIGITAL ECHO(DIGITAL DELAY) 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. PACKAGE 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) Outline 1 4 P 4 ( P ) 2.54mm pitch 300mil DIP RECOMMENDED OPERATING CONDITION Outline 1 6 P 2 N ( FP ) Supply voltage range • • • • • Vcc=3.5~5.5V Rated supply voltage • • • • • • • • • • Vcc=5V 1.27mm pitch 300mil SOP SYSTEM CONFIGURATION RAM L HPF VOCAL CUT LPF MIC1 BASS MIX L MIX BASS MIX R KEY CONTROL HPF R MIX MIC VOL MIC AMP MIC2 MIX MIX MIC VOL ECHO ECHO VOL MIC AMP M65850P/FP Note : Dolby is the registered trademarks of dolby laboratories licensing corporation. MITSUBISHI ELECTRIC ( 1 / 11 ) . e ion Y icat o chang f R i c e N A l sp ct t P . MITSUBISHI SOUND PROCESSOR ICs M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som M65850P/FP 50 SERIES DIGITAL ECHO(DIGITAL DELAY) KARAOKE PIN CONFIGURATION < M65850P > 1 LPF1 OUT 2 OP1 OUT 3 OP1 IN 4 CC1 5 CC2 6 GND 14 14 VCC M 6 5 8 5 0 P LPF1 IN 13 CLOCK 12 REF 11 OP2 IN 10 OP2 OUT 9 LPF2 IN 7 8 LPF2 OUT NC 1 14 16 LPF1 IN 2 LPF1 OUT 3 OP1 OUT 4 OP1 IN 5 CC1 6 CC2 7 GND 8 < M65850FP > M 6 5 8 5 0 F P MITSUBISHI ELECTRIC NC 15 VCC 14 CLOCK 13 REF 12 OP2 IN 11 OP2 OUT 10 LPF2 IN 9 LPF2 OUT ( 2 / 11 ) . e ion Y icat o chang f R i c e N A l sp ct t P . MITSUBISHI SOUND PROCESSOR ICs M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som M65850P/FP 50 SERIES DIGITAL ECHO(DIGITAL DELAY) KARAOKE IC INTERNAL BLOCK DIAGRAM < M65850P > CLOCK 13 REF 12 CC2 OP2IN OP2OUT LPF2IN LPF2OUT 6 11 10 9 8 OSCILLATOR D / A LPF2 1/2 Vcc CLOCK AUTO RESET DO1 RESET MAIN CONTROL D1 MO MI DO0 20Kbit SRAM A / D LPF1 1 2 3 4 LPF1IN LPF1OUT OP1OUT OP1IN < M65850FP > REF 13 CLOCK 14 5 CC1 7 14 GND VCC CC2 OP2IN OP2OUT LPF2IN LPF2OUT 7 12 11 10 9 OSCILLATOR D / A LPF2 1/2 Vcc NC 16 NC AUTO RESET 1 CLOCK DO1 MO RESET MAIN CONTROL MI D1 DO0 20Kbit SRAM A / D LPF1 2 3 4 5 LPF1IN LPF1OUT OP1OUT OP1IN MITSUBISHI ELECTRIC 6 CC1 8 15 GND VCC ( 3 / 11 ) . e ion Y icat o chang f R i c e N A l sp ct t P . MITSUBISHI SOUND PROCESSOR ICs M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som M65850P/FP 50 SERIES DIGITAL ECHO(DIGITAL DELAY) KARAOKE PIN DESCRIPTION Pin No. P FP 1 2 Symbol LPF1 IN Name I/O Low pass filter 1 input I O Function To form input-side low pass filter by connecting external capacitor and resistor 2 3 LPF1 OUT Low pass filter 1 output 3 4 OP1 OUT Operational amplifier1 output O 4 5 OP1 IN Operational amplifier 1 input I 5 6 CC1 Current control 1 - ADM control of A-D converter 6 7 CC2 Current control 2 - ADM control of D-A converter 7 8 GND GND - 8 9 LPF2 OUT Low pass filter 2 output O 9 10 LPF2 IN Low pass filter 2 input I 10 11 OP2 OUT Operational amplifier 2 output O 11 12 OP2 IN Operational amplifier 2 input I 12 13 REF Reference - Analog reference voltage • 1/2Vcc 13 14 CLOCK Clock generator input I To form clock generator by connecting external resistor 14 15 VCC Supply voltage - To apply 3.5 ~ 5.5 V power (Rated voltage : 5 V) NC No connection - - 1 16 MITSUBISHI ELECTRIC To form A-D conversion integrator by connecting external capacitor To form input-side low pass filter by connecting external capacitor and resistor To form D-A conversion integrator by connecting external capacitor • ( 4 / 11 ) . e ion Y icat o chang f R i c e N A l sp ct t P . MITSUBISHI SOUND PROCESSOR ICs M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som M65850P/FP 50 SERIES DIGITAL ECHO(DIGITAL DELAY) KARAOKE ABSOLUTE MAXIMUM RATINGS ( Ta = 25°C, unless otherwise noted ) Symbol Parameter Ratings Unit Vcc Supply voltage V Circuit current 6.0 100 Icc mA Pd Power dissipation 800(P),550(FP) mW Topr Operating temperature °C Tstg Storage temperature -20 ~ 75 -40 ~ 125 Conditions °C RECOMMENDED OPERATING CONDITION Symbol Parameter Vcc fck Supply Voltage Conditions Min Limits Typ 3.5 0.8 Clock frequency Max 5 5.5 11.0 Unit V MHz ELECTRICAL CHARACTERISTICS (Vcc=5V,f=1kHz,Vi=100mV(rms),fck=1MHz,Ta=25°C, unless otherwise noted) Limits Symbol Parameter Icc Circuit current Gv Voltage gain Vomax THD No fck Maximum output voltage Total harmonic distortion Min Typ Max Unit 5 13 25 mA RL=47kΩ -3.0 0 3.0 dB THD=10% 0.7 1.0 Test conditions No signal input 30kHz LPF Output noise voltage DIN-AUDIO Clock frequency Rc=120kΩ MITSUBISHI ELECTRIC 0.85 V(rms) 1.2 3.0 % -85 -70 dBV 1 1.15 MHz ( 5 / 11 ) . e ion Y icat o chang f R i c e N A l sp ct t P . MITSUBISHI SOUND PROCESSOR ICs M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som M65850P/FP 50 SERIES DIGITAL ECHO(DIGITAL DELAY) 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. Vcc Rc Clock oscillator circuit * 13 The oscillator frequency is: fck = 1 MHz. ( Rc=120kΩ ) * The resistor for current control can be calculated using the following equation. Rc • • K/Clock frequency (fck) [ Hz ] (FP:14) Clock frequency : fck K is the coefficient, and changes according to clock frequency ,as shown below. Delay Time ( ms ) Clock Frequency ( Hz ) K value 11 15~30 11.0M~5.5M 0.8 X 10 31~100 5.3M~1.64M 1.0 X 10 101~200 1.62M~800K 1.2 X 10 MITSUBISHI ELECTRIC Rc ( Ω ) 7.5k~15k 11 18k~62k 11 75k~150k ( 6 / 11 ) . e ion Y icat o chang f R i c e N A l sp ct t P . M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som MITSUBISHI SOUND PROCESSOR ICs M65850P/FP 50 SERIES DIGITAL ECHO(DIGITAL DELAY) 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 LPF2 REF REF 1* * (FP:2) R2 R1 2* * (FP:3) C2 9* * (FP:10) R2 R1 R1 C1 ••• fsig= 2π 8* C2 *(FP:9) R1 C1 1 C1 • C2 • R1 • R2 Delay time Clock signal pass LPF frequency( Hz ) band ( Hz ) R1( Ω ) R2 ( Ω ) C1 (F) C2 (F) ( ms ) Distortion (Reference value) (%) 0.2% 15~30 11.0M ~ 5.5M 7k 15k 15k 3300p 680p 31~100 5.3M ~ 1.64M 5k 13k 13k 4700p 1000p 101~200 1.62M ~ 800k 3k 16k 16k 1.2% 6800p 1500p (Td=160ms) (Td=20ms) 0.3% (Td=50ms) •Test Condition is Vcc=5V,Vi=100mV(rms),f=1kHz,Ta=25°C MITSUBISHI ELECTRIC ( 7 / 11 ) . e ion Y icat o chang f R i c e N A l sp ct t P . MITSUBISHI SOUND PROCESSOR ICs M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som M65850P/FP 50 SERIES DIGITAL ECHO(DIGITAL DELAY) 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 MUTE PERIOD (ABOUT 260ms) RESET PERIOD MUTE OFF TIME WHEN POWER IS ON (fck=1MHz) TEST CONDITIONS Symbol Parameter S1 S14 Remarks Icc Circuit current 2 2 No-signal time Gv Voltage gain between input and output 1 1 RL=47kΩ 1 1 THD=10% Vomax Maximum output voltage THD Output distortion 1 1 30kHz LPF No Output noise voltage 2 1 DIN-AUDIO MITSUBISHI ELECTRIC ( 8 / 11 ) . e ion Y icat o chang f R i c e N A l sp ct t P . MITSUBISHI SOUND PROCESSOR ICs M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som M65850P/FP DIGITAL ECHO(DIGITAL DELAY) 50 SERIES KARAOKE TEST CIRCUIT < M65850P > (2) + ~ 8 Vo 7 6 CC2 GND LPF2 IN LPF2 OUT 9 10 CC1 5 OP2 OUT 11 OP1 IN 4 OP2 IN 12 OP1 OUT 3 REF LPF1 OUT CLOCK 2 VCC 1µ 1500p LPF1 IN 14 16k 16k 1 13 120k 47µ 0.1µ 47k 6800p + 47µ + 16k 0.068µ S14 (1) 1500p 51 16k 1µ 16k (2) 0.22µ 0.22µ + 0.068µ (1) S1 ~ Vi 16k 6800p < M65850FP > (2) 1µ GND 8 9 LPF2 OUT CC2 7 10 LPF2 IN CC1 6 11 OP2 OUT OP1 IN 5 OP2 IN OP1 OUT 4 REF LPF1 OUT CLOCK 3 NC VCC LPF1 IN 12 1500p 2 13 + NC 15 16 16k 16k 1 14 0.1µ 47µ + 47k 6800p + 120k 47µ 16k 0.068µ S14 (1) ~ Vo 1500p 51 16k 1µ 16k (2) 0.22µ 0.22µ 0.068µ + (1) S1 6800p Vi 16k Units Resistance : Ω Capacitance:F ~ MITSUBISHI ELECTRIC ( 9 / 11 ) . e ion Y icat o chang f R i c e N A l sp ct t P . MITSUBISHI SOUND PROCESSOR ICs M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som M65850P/FP 50 SERIES DIGITAL ECHO(DIGITAL DELAY) KARAOKE APPLICATION EXAMPLE • ECHO Delay time 164ms (Signal pass band 3kHz) < M65850P > 16k 0.068µ + 16k 10 9 8 OP2 OUT LPF2 IN LPF2 OUT OP1 IN CC1 CC2 GND 4 5 6 7 REF OP2 IN OP1 OUT 3 12 LPF1 OUT CLOCK 11 1500p 2 14 + LPF1 IN VCC 1µ 16k 1 13 120k 47µ 0.1µ 47µ + OUT 6800p 1500p IN 16k 16k 1µ 0.22µ 0.22µ + 16k 6800p 0.068µ 0.015µ 50k FEEDBACK GAIN SETTING VOLUME < M65850FP > 16k 0.068µ + 16k 9 LPF2 OUT GND 8 10 LPF2 IN CC2 7 11 OP2 OUT CC1 6 12 OP2 IN OP1 IN 5 13 OP1 OUT 4 REF LPF1 OUT CLOCK 3 VCC LPF1 IN NC 2 15 1500p NC 16 + 1500p IN 1µ 16k 1 14 120k 47µ 0.1µ 47µ + 1µ OUT 6800p 16k 16k 0.22µ 0.22µ Units Resistance : Ω Capacitance : F + 0.068µ 16k 6800p 0.015µ 50k FEEDBACK GAIN SETTING VOLUME MITSUBISHI ELECTRIC ( 10 / 11 ) . e ion Y icat o chang f R i c e N A l sp ct t P . MITSUBISHI SOUND PROCESSOR ICs M Inot a finsaare subje I L R E is is limit ric ; Th ice aramet t o N p e som M65850P/FP 50 SERIES DIGITAL ECHO(DIGITAL DELAY) • SURROUND KARAOKE Delay time 20ms ( Signal pass band 7kHz ) < M65850P > 15k 0.047µ + 15k 15k + LPF2 OUT GND LPF2 IN 7 CC2 6 CC1 5 8 9 10 OP1 IN 4 OP2 OUT OP1 OUT 3 OP2 IN 11 12 LPF1 OUT CLOCK 2 REF LPF1 IN VCC 1µ 680p 1 14 11k 47µ 13 0.1µ 47µ + OUT 3300p 680p IN 15k 15k 1µ 0.15µ 0.15µ + 15k 0.047µ 3300p < M65850FP > 15k 0.047µ + 15k + LPF2 OUT CC1 CC2 GND 6 7 8 OP2 IN 9 LPF2 IN OP1 IN 5 10 OP2 OUT OP1 OUT 4 12 14 LPF1 OUT CLOCK 3 REF 15 VCC LPF1 IN 2 NC NC 11 680p 1 16 1µ 15k 13 11k 47µ 0.1µ 47µ + OUT 3300p 680p IN 1µ 15k 15k 0.15µ 0.15µ + 0.047µ 15k Units Resistance : Ω Capacitance : F 3300p MITSUBISHI ELECTRIC ( 11 / 11 )