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BD3873FS Scheda tecnica(PDF) 5 Page - Rohm |
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BD3873FS Scheda tecnica(HTML) 5 Page - Rohm |
5 / 16 page Technical Note 5/15 www.rohm.com 2010.10 - Rev.A © 2010 ROHM Co., Ltd. All rights reserved. BD3870FS,BD3871FS,BD3872FS,BD3873FS ● Block diagram, application circuit, pin assignment (BD3870FS, BD3871FS, BD3873FS) Unit: Resistance =Ω, Capacitor = F Fig.2 ● Pin description (BD3870FS, BD3871FS, BD3873FS) Pin No. Pin Name Description Pin No. Pin Name Description 1 VIN1 1ch volume input pin 13 SC Serial clock input pin 2 VIN2 2ch volume input pin 14 SI Serial data input pin 3 SEL2 2ch input selector output pin 15 VCC Power supply pin 4 SEL1 1ch input selector output pin 16 OUT2 2ch output pin 5 A1 1ch input pin A 17 OUT1 1ch output pin 6 A2 2ch input pin A 18 BOUT1 1ch bass filter setting pin 7 B1 1ch input pin B 19 BNF1 1ch bass filter setting pin 8 B2 2ch input pin B 20 BOUT2 2ch bass filter setting pin 9 C1 1ch input pin C 21 BNF2 2ch bass filter setting pin 10 C2 2ch input pin C 22 TNF2 2ch treble filter setting pin 11 FILTER 1/2 VCC pin 23 TNF1 1ch treble filter setting pin 12 GND Ground pin 24 CAP Time constant setting pin for absorbing surround switching shock sound 5.6k 5.6k 13 14 15 16 17 18 19 20 21 22 23 24 12 11 10 9 8 7 6 5 4 3 2 1 Treble1 fc=8k Hz Treble2 fc=8kHz Bass2 f0=80Hz Bass1 f0=80Hz Logic Vcc/2 Vcc/2 Vcc/2 Vcc/2 Vcc/2 0dB ~ -87dB -∞ 50k 50k 50k 50k 50k 50k 10μ 10μ 47μ 10μ 10μ 10μ 10μ 10μ 10μ 4.7k 4.7k A1 A2 B1 B2 C1 C2 CLOCK DATA LATCH VCC OUT2 OUT1 10μ 10μ 390k 390k 0.1μ 0.1μ 0.1μ 0.1μ 0.0022μ 0.0022μ 0.33μ |
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