TDA7339

® TDA7339 3 BAND DIGITAL CONTROLLED AUDIO PROCESSOR PRODUCT PREVIEW THREE STEREO INPUT ONE RECORD OUTPUT ONE STEREO OUTPUT TWO INDEPENDENT VOLUME CONTROL IN 1.0dB STEPS TREBLE, MIDDLE AND BASS CONTROL IN 1.0dB STEPS ALL FUNCTIONS PROGRAMMABLE VIA SERIAL I2 CBUS DESCRIPTION The TDA7339 is a volume and tone (bass , middle and treble) processor for quality audio application in car radio and Hi-Fi system. Control is accomplished by serial I2C bus microprocessor interface. The AC signal setting is obtained by resistor networks and switches combined with operational amplifiers. BLOCK DIAGRAM DIP28 ORDERING NUMBER: TDA7339 Thanks to the used BIPOLAR/MOS Technology, Low Distortion, Low Noise and Low DC stepping are obtained. R1 2.7K C7 5.6nF 3x 2.2 µF C1 C2 C3 REC OUT(L) TREBLE(L) 2 4 5 MUTE 8 1st VOL TREBLE MIDDLE 3 C9 18nF M IN(L) 6 C10 22nF M OUT(L) 7 9 C13 100nF B IN(L) R3 2.7K C14 100nF B OUT(L) 10 2nd VOL BASS SOFTMUTE IN1(L) IN2(L) IN3(L) 12 OUT L 14 13 SERIAL BUS DECODE & LATCHES 18 15 1st VOL TREBLE MIDDLE BASS 2nd VOL SOFTMUTE 17 11 SCL SDA ADDR DIG.GND CMUTE CSM 22nF OUT R BUS MULTIPLEXER IN1(R) IN2(R) IN3(R) C4 C5 C6 3x 2.2 µF 27 25 24 MUTE 1 VS SUPPLY 16 ANAL.GND CREF 28 21 26 M IN(R) C11 18nF 23 M OUT(R) C12 22nF R2 2.7K 22 20 B IN(R) C15 100nF R4 5.6K 19 B OUT(R) C16 100nF D94AU067C REC OUT(R) TREBLE(R) CREF 10µ F C8 5.6nF July 1999 This is preliminary information on a new product now in development. Details are subject to change without notice. 1/...