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| 00W073A Sound processor for CD radio cassette player BD3871FS 7.80.3 5.40.2 Description BD3871FS is a sound processor for CD/MD radio cassette player. This IC provides all functions, such as input selector (3 input sources), an input gain amplifier (25dB, 27dB, 29dB),and a surround, tone (bass, treble). This IC can be controlled by a 2-wire serial data interface. Features Dimension (Units : mm) 10.00.2 24 13 1 1.80. 1 12 0. 1 1 0.8 0.360. 1 0.3Min 0. 15 1) Can select center frequency and Q value of Bass characteristics by external components. 2) Mute switch at the input terminal can reduce cross talk. 3) Surround function is composed without external components. 4) Ideal for energy-saving designs with low current consumption due to the adoption of the BiCMOS process, allowing easy-design of the regulator blocks in the set. Applications CD radio cassette player, MD radio cassette player, Micro component stereo SSOP-A24 Absolute Maximum Ratings (Ta=25C) Parameter Power supply voltage Power dissipation Operating temperature range Storage temperature range Symbol Vcc Pd Topr Tstg -25 -55 Limits 10 800 ~ ~ * Unit V mW +75 +125 C C * Derating : 8.0mW/C for operation above Ta=25C Recommended Operating Conditions (Ta=25C) Parameter Operating voltage Symbol VDD Min. 4.5 Typ. 8 Max. 9.5 Unit V September, 2000 0.150. 1 Electrical characteristics (Unless otherwise noted ; Ta=25C, Vcc=8V, f=1kHz, Vi=50mVrms, RL=10k , Rg=600 , INPUT GAIN=24dB, Vol=0dB, bass,treble=0dB, surround=OFF) Parameter Circuit current Output voltage gain Total harmonic distortion Maximum output voltage Residual noise voltage Output residual noise voltage Volume control range Bass control range Treble control range Surround gain (Antiphase) Symbol IQ GV THD Vomax Vno Vmno VRI GB TB Vsur Min. -- 22 -- 1.6 -- -- -90 +12 -16 +10 -14 Typ. 8 24 0.01 2.1 4.5 40 -87 +14 -14 +12 -12 Max. 21 26 0.1 -- 15 80 -84 +16 -12 +14 -10 Unit mA dB % Vrms Vrms Vrms dB dB dB dB No signal Conditions VOUT=1Vrms, Bw=400~30kHz THD=1%, Bw=400~30kHz Rg=0 , Vol=-*, Bw=IHF-A Rg=0 , Vol=0dB, Bw=IHF-A VIN=1Vrms, 1dB/STEP VIN=100mVrms, 2dB/STEP VIN=100mVrms, 2dB/STEP VIN=100mVrms 8 10 12 Application Circuit OUT1 OUT2 0.33 0.0022 0.0022 Vcc DATA CLOCK LATCH 0.1 5.6K 0.1 0.1 5.6K 0.1 + 18 10 + 17 10 390K 390K 24 23 22 21 20 19 16 15 14 13 Surround Treble1 fc=8kHz Treble2 fc=8kHz Bass 2 f0= 80Hz Bass 1 f0= 80Hz Logic Vcc/2 Vcc/2 0dB ~ -87dB -* Vcc/2 Vcc/2 Vcc/2 BD3871FS 50k 50k 50k 50k 50k 50k 1 2 3 + 10 + 10 4 5 + 10 6 + 10 7 + 10 8 + 10 9 + 10 4.7K 10 + 10 4.7K C2 11 + 47 12 UNIT RESISTANCE : CAPACITOR : F A1 A2 B1 B2 C1 |
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