![](/images/new-backgrounds/1179633/17963341x1.webp)
Bus Control Tuner IC
LV25200M Under
development
Overview
The LV25200M integrates an optimal reception system for varying reception conditions plus AM NC functions that support reception worldwide. It also reduces the number of external components required.
Clear Surround Controlontrol ICIC IncludesIncludes PlusPlus SoundSound AlgorithmAlgorithm
LA2655VV ProductProduct | ❋❋ :: UseUse ofof conditionalconditional productsproducts requiresrequires |
ConditionalConditional | consultationconsultation withwith aa SANYOSANYO representativerepresentative |
priorprior toto thethe useuse ofof thethe devicedevice.. |
Overview
The LA2655V is a sound field recreation IC that is optimal for audio equipment and that includes the Plus Sound algorithm.
Functions
■FM front end
■Multiplex
■PLL
■FM IF
■AM upconversion
■Autoalignment
■Noise canceller
■FM/AM switch
■MRC
❋: CCB is SANYO's original bus format.
All bus addresses are managed by SANYO for this format.
Block Diagram
Features
FM
■Image rejection mixer adopted
■
■Supports reception in all areas worldwide
■Crystal oscillator: 20.5 MHz
PLL
■Supports
■Serial bus control circuit (SANYO CCB bus)
AM
■Increased mixer dynamic range, improved noise filter
■Increased IF amplifier dynamic range, improved noise filter
■
MC, MPX, and MRC
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■Package: QFP80 (14 14 mm)
The LA2655V is optimal for use in radio/cassette players, personal computers, TV sets, and other consumer audio products including
The Plus Sound algorithm corrects for both delays and attenuations of the high and low frequency signals due to the characteristics of the speakers and creates audio with extreme clarity.
Functions
■Plus Sound algorithm
■Clear Surround signal processing
■Variable clear level effect (using external components)
■Package: SSOP20 (225 mil)
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| 10K |
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| C57 |
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| 4.7U+ |
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| C |
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| C50B |
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| 8200p |
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| C46 R43 | C43 |
| C42 | 68K |
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| AM |
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| C56 |
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| TESTPLL | + | MOD |
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| R47 0.1∝F | 0.47∝F | 0.22∝F |
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| AGCIF | AMCL | TESTPLL |
| V | INDEX |
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| OUTDET |
| VREF |
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| INAFC | MUTE DRIVE | INMRC | R41 |
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| C59 |
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| 10K | 3300p |
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| 450K |
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| C49 |
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| C48 |
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| 1000p |
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| CC |
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| 0.022∝F | 60 | 59 | 58 | 57 |
| 56 | 55 | 54 | 53 | 52 | 51 | 50 | 49 | 48 |
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| C40 |
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| C61 | AM |
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| rey2.7V |
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| AFC |
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| AM low cut |
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| QD | N amc |
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| 62 |
| AM IF AMP |
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| det |
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| Mute |
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| Time | 39 | + |
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| C62 | 0.022∝F |
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| AMP |
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| 1U |
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| CF10.7 |
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| MIX |
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| AM/FM C38 |
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| ∝ |
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| BPF |
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| VSM |
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| 1M |
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| 0.022 F | AM |
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| NC in |
| Gtime |
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| NOISE R37 |
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| 64 |
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| delay |
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| C58 |
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| IF AGC |
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| Ccont |
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| AGC C37 |
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| NOISE10K |
| C36 |
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| 65 | MIX |
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| 36 SENC R381000p |
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| 66 |
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| 35 CHCC |
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| C35 |
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| L_MI | 2 OUT |
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| N AGC |
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| R66 |
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| 10∝F | + Vref | reg4.9V |
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| LPF |
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| AGC |
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| R58 | L_AM3 | 67 |
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| RF AGC |
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| BUFF |
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| 34 |
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| 75 |
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| W AGC |
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| 620 |
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| AM NC 0.47∝F |
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| 68 |
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| HPF |
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| Trig |
| Gate |
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| 0.022∝F |
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| Triger OUT |
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| anp |
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| FET |
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| 32 GND |
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| C69 |
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| Phase |
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| 19K<90 |
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| FM cut | CPH5905 | + |
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| BYPASS |
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| select |
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| R31 |
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| 3K |
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| MPX VCC 19K<0 |
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| DAC |
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| 31 |
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| Lodins coil |
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| 8bit AD |
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| C35 |
| 0.022∝F |
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| ANT d |
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| TRIG |
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| C30 |
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| 1U |
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| 0.022∝F | 100K | 47U |
| C71 |
| BIAS 71 |
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| FF |
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| 38K<0 |
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| 30 |
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| 10.7MS3 |
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| C29 |
| 1U |
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| 72 |
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| HCC |
| 29 |
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| 1SV234 | Pin_D | 470 |
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| HCC R29 |
| 15K |
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| R73 |
| CF10.7 TEST |
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| SNC |
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| 82K |
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| C78 |
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| Keyed AGC |
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| 28 SNC R280.22∝F |
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| N AGC |
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| Sub |
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| C73 |
| 0.022∝F | C74 |
| 30P | 74 |
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| 27 | C27 |
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| W AGC |
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| decorder | VDD |
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| 0.022∝F |
| L_MIX |
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| IN1/IN2 |
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| bus |
| MATRIX | 26 |
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| C26 |
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| 32K |
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| C75 |
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| OSC BUFFER |
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R101 |
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| 76 |
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| orogramable | ohase |
| reference |
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| 25 | F |
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| R102 |
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| R70 | 30 |
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| swallow |
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| C25 |
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| 330 |
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| counter |
| divider |
| detector |
| counter |
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| 0.015∝F |
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C105 | D | 2.2k C106 | L104 | 0.025∝F |
| 0 | 77 |
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| 1/10.1/8div |
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| 24 X' TAL GND |
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| 2200P |
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| C77 |
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2200P | Pin |
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| R77 | 0.022∝F |
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| MIX |
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| 23 | X TAL IN |
| C23 |
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| L102 | C102 |
| L103 | SVC203 |
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| AM |
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| 3K |
| CP1 |
| SD Stereo |
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| 18pF |
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| Pin_D | 1000P |
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| R8 |
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| 6P | 0.047 | ∝ | 79 |
| IQ MIX |
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| div |
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| OSC | 22 | 20.5M | C22 |
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| Vref 3V |
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| C79 |
| IN |
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| 18pF |
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C101 |
| C103 |
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| ANT | D |
| RF AGC |
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| X TAL OUT |
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18P |
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| 1000P |
| IN 80 |
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| 500K |
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| 21 X' TAL V |
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L101 |
| 1P |
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| 12P |
| C105 |
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| CC |
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0.22∝F |
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| C80 |
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| 1 | 2 | 3 | 4 |
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| 8 | 9 | 10 | 11 | 12 | 13 |
| 14 | 15 | 16 | 17 |
| 18 | 19 | 20 |
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| ANT D | RF AGC |
| GND | IN2 |
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| FM OSC |
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| 3V |
| TEST |
| sep adj. | GND |
| CE | DI | CL | DO100K |
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| C107 | C109 | R103 |
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| 3p |
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| C11B |
| C12B |
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| 1 F |
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| C6 | C7 |
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| C12 C15 |
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| + |
| 100 |
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| +C2 | C4 | 0.022∝F |
| L_OSC |
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| C10AF0.039∝ |
| R11 | CPAM | 4700p |
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| 0.47∝F |
| p11 up |
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| p11 up |
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| ∝ |
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| VCD_OSC |
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| 2200P | 0.01∝F |
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| 100K |
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| R20 |
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| R13 |
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| 30K |
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| 2.4K |
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| 0 | 0 | 0 | 0 |
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8V |
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| R12 |
| SD Stereo IND. |
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| Lch | Rch | |||||||
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| C9A |
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VCC |
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| 6.8K |
| TEST |
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| OUT | OUT | |||
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| 1000p |
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| C8 |
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| 220pF |
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| GND |
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| DO |
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| TEST |
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| DI |
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| NC |
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| VDD |
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| CS |
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| 30 |
| EEPROM |
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| CS | CE |
| DI | CL | DO | DO |
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| VCC2 VCC |
| |||
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| TUNER EEPROM |
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| 5V | 5V |
|
❋:This product is subject to change without notice for improvement. When considering the use of this product, first refer to the latest SANYO "Semiconductor News" publication related to this device and finally refer to the latest specifications for the device.
Block Diagram
| VCC |
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| C7 |
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| 2200pF | R4 |
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| + |
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| C11 |
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| 4.7∝F |
| C10 |
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| C12 |
| C13 | ∝ | |||
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| ||||||
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| C |
| C | + 1∝F |
| R |
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| 1 F | ||
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| + | ||||
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| 4.7∝F | 2200pF |
| 82000pF |
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| ||||
N.C |
| VCC | AGND | LC1 | LV1 | LC2 | LC3 | LV2 |
| ||||
20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | ||||
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| A |
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| Brightness control |
| SW |
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| B |
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On/off control |
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| Brightness control |
| A |
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| BSW |
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1 |
| 2 | 3 |
| 4 | 5 |
| 6 | 7 | 8 | 9 | 10 | |
CONT1 | GND | VREF | RC1 | RV1 | RC2 | RC3 | RV2 |
| |||||
|
| C | + | C | + C |
| R |
| C5 |
| C |
| + 1∝F |
|
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| |||||||
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| 4.7∝F |
|
| 1∝F | 2200pF |
| 82000pF |
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| ||
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| C |
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| R2 |
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| 2200pF |
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L/H |
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| 37 Car Audio | 38 Car Audio |
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