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BU9253AS-E2 Datasheet(PDF) 7 Page - Rohm |
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BU9253AS-E2 Datasheet(HTML) 7 Page - Rohm |
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7 / 17 page  7/16 ●Pin description, Block diagram, Application circuit ＜ BU9253AS/FS＞ BU9253AS Pin No. BU9253FS Pin No. Symbol Function 1 1 GND GND pin 2 2 ECHO VR Echo level DC control pin 3 － NC1 Not connected 4 3 BIAS Analog unit DC bypath pin 5 4 DAINT IN DA side integrator input pin 6 5 DAINT OUT DA side integrator output pin 7 6 DALPF IN DA side LPF input pin 8 7 DALPF OUT DA side LPF output pin 9 8 MIX OUT Mixing output of original sound and echo sound 10 9 MIX IN Original sound input pin of mixing amplifier 11 10 ADLPF IN AD side LPF input pin 12 11 ADLPF OUT AD side LPF output pin 13 12 ADINT OUT AD side integrator output pin 14 13 ADINT IN AD side integrator input pin 15 14 VCC VCC pin 16 － NC2 Not connected 17 15 MUTE Mute control pin 18 16 CR Oscillator CR pin + - - + 12 456 78 9 18 17 15 14 13 12 11 A/D SRAM D/A MIX COUNTOR OSC 10 OUT + + IN + VCC C1 100p R2 39k C3 0.01u R4 10k R5 20k R6 8.2k C5 0.012u R7 20k C4 4700p 2.2u 22u C6 0.01u R9 10k 0.47u R10 4.7k R11 15k C7 0.01u C8 3300p 2.2u 16 3 VR1 10k R8 2.2k VCC VCC + 100u 0.1u VCC + C2 22u R3 22k MUTE A/D側LPF用オペアンプ D/A側LPF用オペアンプ ・ Description of terminal ・ BU9253AS Block diagram, Application circuit Fig.27 Application circuit ・ BU9253AS pin assignment Fig.26 BU9253FS pin assignment 1 23 4 5 6 78 16 15 14 13 12 11 10 CR MUTE VCC ADINT IN ADINT OUT ADLPF OUT ADLPF IN MIX IN GND ECHO VR BIAS DAINT IN DAINT OUT DALPF IN DALPF OUT MIX OUT 9 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 CR MUTE VCC ADINTIN ADINTOUT ADLPFOUT ADLPFIN MIXIN GND ECHOVR BIAS DAINTIN DAINTOUT DALPFIN DALPFOUT MIXOUT NC NC A/D side LPF operation amplifier D/A side LPF operation amplifier ・ BU9253FS pin assignment Fig.25 BU9253AS pin assignment |
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