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TS4975 数据表(PDF) 29 Page - STMicroelectronics |
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TS4975 数据表(HTML) 29 Page - STMicroelectronics |
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29 / 33 page ![]() TS4975 Application Information 29/33 Figure 63. Demoboard schematic Figure 64. Bottom layer 10k R5 Vcc1 10k R4 Vcc1 1 6 2 7 3 8 4 9 5 CON1 RS232 GND2 DTR TXD GND SDA SDA SCL SCL R1IN 13 R2IN 8 T1IN 11 T2IN 10 C1+ 1 C1- 3 C2+ 4 C2- 5 V+ 2 V- 6 R1OUT 12 R2OUT 9 T1OUT 14 T2OUT 7 U3 ST232 Vcc2 GND2 Vcc2 GND2 Cn5 GND2 10K R7 GND2 C5 1µF C6 0.1µF C7 0.1µF C8 0.1µF C9 0.1µF GND2 Vcc2 Vcc2 Vcc2 SDA SCL Vcc2 SDA Vcc1 180R R8 GND2 360R R6 360R R9 Vcc1 Bias Volume control Select I2C Mode 1 6 9 10 12 13 TS4975 IN1 IN2 OUT1 OUT2 PHG1 PHG2 OUT1 Amplifier OUT2 Amplifier PHG1 Amplifier PHG2 Amplifier IN1 IN2 Pre-Amplifier Pre-Amplifier Bypass U1 10k R3 1 2 3 4 JP1 HEADER 4 Vcc1 Cn6 1k R1 1k R2 1 2 3 J1 PHONEJACK STEREO Cn8 Cn7 Vcc1 Cn1 C1 1µF C2 1µF + C3 220µF + C4 220µF P2 IN2 P1 IN1 Cn3 Cn4 Cn2 I2C BUS 1 2 3 4 JP2 HEADER 4 1 2 16 15 U2A KP1040 3 4 14 13 U2B KP1040 5 6 12 11 U2C KP1040 + C10 330nF + C11 330nF |
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