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| M65850P/FP Digital Echo (Digital Delay) REJ03F0171-0201 Rev.2.01 Jan 25, 2008 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 1 MHz) (Selection of delay time in a range between 15 ms and 200 ms) * Small package (14-pin DIP: PRDP0014AA-A (14P4), 16-pin SOP: PRSP0016DE-A (16P2N-A)) * Built-in 20 Kbit SRAM * Built-in auto reset circuit (The IC reset as power is turned on) * Single power supply (5 V) Recommended Operating Condition * Supply voltage range: VCC = 3.5 to 5.5 V * Rated supply voltage: VCC = 5 V 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 MIX Echo M65850P/FP Echo VOL MIC2 MIC AMP MIC VOL Note: Dolby is the registered trademarks of Dolby Laboratories Licensing Corporation. REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 1 of 11 M65850P/FP Block Diagram * M65850P CLOCK 13 CC2 6 OP2 IN 11 OP2 OUT 10 LPF2 IN 9 LPF2 OUT 8 REF 12 1/2 VCC Oscillator D/A LPF2 CLOCK Auto reset DO1 MO RESET Main control MI D1 DO0 20 kbit SRAM A/D LPF1 1 LPF1 IN 2 LPF1 OUT 3 OP1 OUT 4 OP1 IN 5 CC1 7 GND 14 VCC * M65850FP CLOCK 14 CC2 7 OP2 IN 12 OP2 OUT 11 LPF2 IN 10 LPF2 OUT 9 REF 13 1/2 VCC NC 16 NC 1 Auto reset Oscillator D/A LPF2 CLOCK DO1 MO RESET Main control MI D1 DO0 20 kbit SRAM A/D LPF1 2 LPF1 IN 3 LPF1 OUT 4 OP1 OUT 5 OP1 IN 6 CC1 8 GND 15 VCC REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 2 of 11 M65850P/FP Pin Arrangement M65850P LPF1 IN 1 LPF1 OUT 2 OP1 OUT 3 OP1 IN 4 CC1 5 CC2 6 GND 7 14 VCC 13 CLOCK 12 REF 11 OP2 IN 10 OP2 OUT 9 LPF2 IN 8 LPF2 OUT GND 8 (Top view) Outline: PRDP0014AA-A (14P4) 9 LPF2 OUT NC 1 LPF1 IN 2 LPF1 OUT 3 OP1 OUT 4 OP1 IN 5 CC1 6 CC2 7 M65850FP 16 NC 15 VCC 14 CLOCK 13 REF 12 OP2 IN 11 OP2 OUT 10 LPF2 IN (Top view) Outline: PRSP0016DE-A (16P2N-A) Pin Description Pin No. P FP 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 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 Operational amplifier 1 output Operational amplifier 1 input Current control 1 Current control 2 GND Low pass filter 2 output Low pass filter 2 input Operational amplifier 2 output Operational amplifier 2 input Reference Clock generator input Supply voltage No connection 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 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 To form D/A conversion integrator by connecting external capacitor Analog reference voltage 1/2 VCC To form clock generator by connecting external resistor To apply 3.5 to 5.5 V power (Rated voltage: 5 V) REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 3 of 11 M65850P/FP Absolute Maximum Ratings (Ta = 25C, unless otherwise noted) Item Supply voltage Circuit current Power dissipation Operating temperature Storage temperature Symbol VCC ICC Pd Topr Tstg Ratings 6.0 100 800 (P), 550 (FP) -20 to +75 -40 to +125 Units V mA mW C C Conditions Recommended Operating Condition Item Supply voltage Clock frequency Symbol VCC fck Min 3.5 0.8 Limits Typ 5 -- Max 5.5 11.0 Unit V MHz Conditions Electrical Characteristics (VCC = 5 V, f = 1 kHz, Vi = 100 mVrms, fck = 1 MHz, Ta = 25C, unless otherwise noted) Item Circuit current Voltage gain Maximum output voltage Total harmonic distortion Output noise voltage Clock frequency Symbol ICC GV Vomax THD No fck Min 5 -3.0 0.7 -- -- 0.85 Limits Typ 13 0 1.0 1.2 -85 1 Max 25 3.0 -- 3.0 -70 1.15 Unit mA dB Vrms % dBV MHz Test Conditions No signal input RL = 47 k THD = 10% 30 kHz LPF DIN-AUDIO RC = 120 k REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 4 of 11 M65850P/FP 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 = 1 MHz (fs = 125 kHz), Td can be set at 164 ms. VCC RC * 13 Clock oscillator circuit * (FP: 14) Clock frequency: fck K is the coefficient, and changes according to clock frequency, as shown below. (VCC = 5 V, Ta = 25C) Delay Time (ms) 15 to 30 31 to 100 101 to 200 Clock Frequency (Hz) 11.0 M to 5.5 M 5.3 M to 1.64 M 1.62 M to 800 k K Value 0.8 x 1011 1.0 x 1011 1.2 x 1011 RC () 7.5 k to 15 k 18 k to 62 k 75 k to 150 k REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 5 of 11 M65850P/FP 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) * C2 R2 2 * 9 * (FP: 10) * C2 R2 8 * * (FP: 3) * (FP: 9) R1 C1 R1 R1 C1 R1 fsig = 1 2 C1 * C2 * R1 * R2 (VCC = 5 V, Vi = 100mVrms, f = 1 kHz, Ta = 25C) LPF Delay Time (ms) 15 to 30 31 to 100 101 to 200 Clock Frequency (Hz) 11.0 M to 5.5 M 5.3 M to 1.64 M 1.62 M to 800 k Signal Pass Band (Hz) 7k 5k 3k R1 () 15 k 13 k 16 k R2 () 15 k 13 k 16 k C1 (F) 3300 p 4700 p 6800 p C2 (F) 680 p 1000 p 1500 p Distortion (Reference Value) (%) 0.2% (Td = 20 ms) 0.3% (Td = 50 ms) 1.2% (Td = 160 ms) 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 260 ms) When power is ON (fck = 1 MHz) Mute off time REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 6 of 11 M65850P/FP Test Conditions Item Circuit current Voltage gain between input and output Maximum output voltage Output distortion Output noise voltage Symbol ICC GV Vomax THD No S1 2 1 1 1 2 S14 2 1 1 1 1 Remarks No-signal time RL = 47 k THD = 10% 30 kHz LPF DIN-AUDIO REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 7 of 11 M65850P/FP Test Circuit * M65850P (2) S14 (1) 120 k 1500 p 14 13 12 11 10 9 8 Vo 16 k 47 0.068 + 16 k 6800 p 16 k 1 47 k REF OP2 OUT OP2 IN LPF1 OUT OP1 OUT LPF1 IN OP1 IN 1 1500 p 2 3 0.068 4 0.22 5 6 0.22 51 1 (2) (1) 16 k 6800 p 16 k 16 k S1 Vi * M65850FP (2) S15 (1) 120 k 1500 p 10 9 16 k 47 0.068 + 16 k 6800 p 16 k 1 47 k OP2 IN REF OP2 OUT LPF2 IN NC LPF1 OUT OP1 OUT LPF1 IN OP1 IN 1 2 1500 p 3 4 0.068 5 0.22 6 7 0.22 51 1 (2) (1) 16 k 6800 p 16 k 16 k S2 Vi GND CC1 CC2 NC LPF2 OUT VCC CLOCK REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 8 of 11 + 47 0.1 16 15 14 13 12 11 + A GND 7 CC1 CC2 LPF2 OUT LPF2 IN VCC CLOCK + 47 0.1 + A + + Vo 8 Units R: C: F M65850P/FP Application Example 1. Echo Delay time 164 ms (Signal pass band 3 kHz) * M65850P 6800 p 47 0.1 120 k 1500 p 14 VCC 1 OUT + 47 0.068 16 k 16 k 16 k 13 CLOCK 12 REF OP2 OUT OP2 IN LPF1 OUT OP1 OUT LPF1 IN OP1 IN 1 1500 p 16 k 16 k 6800 p 2 3 4 0.22 0.068 0.15 5 6 0.22 IN 1 + 16 k 50 k Feedback gain setting volume * M65850FP 16 k + + 47 0.1 120 k 1500 p 10 9 LPF2 IN LPF2 OUT 6800 p 16 k GND CC1 CC2 LPF2 OUT LPF2 IN 47 0.068 16 k 16 NC 15 VCC 14 CLOCK 13 REF 12 OP2 IN 11 OP2 OUT LPF1 OUT OP1 OUT LPF1 IN OP1 IN 1 2 1500 p 16 k 16 k 3 4 5 0.22 0.068 0.15 6 7 0.22 IN 1 + 16 k 6800 p 50 k Feedback gain setting volume GND CC1 CC2 NC 8 Units R: C: F REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 9 of 11 + + + 11 10 9 8 7 1 OUT M65850P/FP 2. Surround Delay time 20 ms (Signal pass band 7 kHz) * M65850P 15 k + + 47 0.1 11 k 680 p 14 VCC 3300 p 15 k 1 OUT + 47 0.047 15 k 13 CLOCK 12 REF 11 OP2 IN 10 OP2 OUT 9 LPF2 IN 8 LPF2 OUT LPF1 OUT OP1 OUT LPF1 IN OP1 IN 1 680 p 15 k 15 k 3300 p 2 3 4 0.15 0.047 5 6 0.15 IN 1 + 15 k * M65850FP 15 k + + 47 0.1 11 k 680 p 16 NC 3300 p 15 k GND CC1 CC2 7 1 OUT + 47 0.047 15 k 15 VCC 14 CLOCK 13 REF 12 OP2 IN 11 OP2 OUT 10 LPF2 IN 9 LPF2 OUT LPF1 OUT OP1 OUT LPF1 IN OP1 IN 1 2 680 p 15 k 15 k 3 4 5 0.15 0.047 6 7 0.15 IN 1 + 15 k 3300 p GND CC1 CC2 NC 8 Units R: C: F REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 10 of 11 M65850P/FP Package Dimensions JEITA Package Code P-DIP14-6.3x19-2.54 RENESAS Code PRDP0014AA-A Previous Code 14P4 MASS[Typ.] 1.0g 14 8 1 7 *1 c e1 E *2 D NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET. A2 Reference Dimension in Millimeters Symbol A e SEATING PLANE *3 b3 bp e1 D E A A1 A2 bp b3 c e L Min Nom Max 7.32 7.62 7.92 18.8 19.0 19.2 6.15 6.3 6.45 4.5 0.51 3.3 0.4 0.5 0.6 1.4 1.5 1.8 0.22 0.27 0.34 0 15 2.29 2.54 2.79 3.0 JEITA Package Code P-SOP16-5.3x10.1-1.27 L RENESAS Code PRSP0016DE-A Previous Code 16P2N-A MASS[Typ.] 0.2g 16 9 HE *1 E A1 F NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET. 1 Index mark 8 A2 A1 c *2 D Reference Dimension in Millimeters Symbol e y *3 bp Detail F D E A2 A1 A bp c HE e y L Min Nom Max 10.0 10.1 10.2 5.2 5.3 5.4 1.8 0.1 0.2 0 2.1 0.35 0.4 0.5 0.18 0.2 0.25 0 8 7.5 7.8 8.1 1.12 1.27 1.42 0.1 0.4 0.6 0.8 A REJ03F0171-0201 Rev.2.01 Jan 25, 2008 Page 11 of 11 L Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Notes: 1. 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