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1 / 16 page 1/16 TDA7429L March 2000 s 3 STEREO INPUTS s AUXILIARY MONO INPUT s INPUT ATTENUATION CONTROL IN 0.5dB STEP s TREBLE MIDDLE AND BASS CONTROL s FOUR SPEAKERS ATTENUATORS: - 4 INDEPENDENT SPEAKERS CONTROL IN 1dB STEPS FOR BALANCE FACILITY - INDEPENDENT MUTE FUNCTION s SUBWOOFER OUTPUT (L+R) CONTROLLED IN 1dB STEP INPUTS s ALL FUNCTIONS PROGRAMMABLE VIA SERIAL BUS DESCRIPTION The TDA7429L is volume tone (bass middle and tre- ble) balance (Left/Right) processors for quality audio applications in TV and Hi-Fi systems, providing also an additional subwoofer control. The AC signal setting is obtained by resistor networks and switches combined with operational amplifiers. Thanks to the used BIPOLAR/CMOS Technology, Low Distortion, Low Noise and DC stepping are ob- tained. SDIP42 ORDERING NUMBER: TDA7429L 3 BAND EQUALIZER AUDIO PROCESSOR WITH SUBWOOFER CONTROL Figure 1. Test Circuit N.C. N.C. N.C. N.C. N.C. LP LP1 100nF VAR_L 2.2 µF HP2 BASSO_L VAR_R BASSO_R AUXOUT_L AUXOUT_R L_OUT R_OUT VS CREF 100nF 10 µF 22 µF 220nF R_IN3 0.47 µF R_IN2 0.47 µF DIG_GND SCL SDA AGND 18nF 2.7K MIDDLE_LO MIDDLE_LI 22nF 18nF 2.7K MIDDLE_RO MIDDLE_RI 22nF 100nF 5.6K BASS_LO BASS_LI 100nF 100nF 5.6K BASS_RO BASS_RI 100nF TREBLE_L 5.6nF D99AU1029 2.2 µF TREBLE_R 100nF MONITOR_R 100nF 42 1 14 2 3 4 5 6 23 24 37 19 20 21 22 41 15 16 17 18 32 31 30 29 28 27 26 25 13 12 11 8 7 40 39 MONO INPUT 0.47 µF L+R OUTPUT 9 10 R_IN1 0.47 µF 38 L_IN1 0.47 µF 35 L_IN2 0.47 µF 34 L_IN3 0.47 µF 33 MONITOR_L 36 |
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