TDA7303 STMicroelectronics

TDA7303 Digital controlled stereo audio processor with loudness Features Input multiplexer: 3 stereo inputs Selectable input gain for optimal adaptation to different sources Volume control in 1.25 dB steps Loudness function SO-28 Treble and bass controL Four speaker attenuators: 4 independent speakers control in 1.25d B steps for balance and fader facilities Selectable input gain and external loudness Independent mute function function are provided. Control is accomplished by 2 All functions programmable via serial I C bus 2 serial I C bus microprocessor interface. The AC signal setting is obtained by resistor Description networks and switches combined with operational amplifiers. The TDA7303 is a volume, tone (bass and treble) balance (left/right) and fader (front/rear) Thanks to the used bipolar/CMOS technology, low processor for quality audio applications in car distortion, low noise and low DC stepping are radio, Hi-Fi and portable systems. obtained. Table 1. Device summary Order code Package Packing TDA7303 SO-28 Tray TDA7303TR SO-28 Tape and reel September 2013 Rev 4 1/20 1Contents TDA7303 Contents 1 Block, test and pin diagrams 5 1.1 Block diagram . 5 1.2 Test circuit . 6 1.3 Pin connection 6 2 Electrical specifications 7 2.1 Absolute maximum ratings . 7 2.2 Quick reference data . 7 2.3 Thermal data . 7 2.4 Electrical characteristics . 8 2.5 Electrical characteristics curves 10 2 3I C bus interface . 13 3.1 Data validity . 13 3.2 Start and stop conditions . 13 3.3 Byte format 13 3.4 Acknowledge 13 3.5 Transmission without acknowledge . 13 4 Software specification 15 4.1 Interface protocol . 15 4.2 Subaddress (receive mode) . 15 4.3 Data bytes (detailed description) . 16 5 Package information 18 6 Revision history . 19 2/20