7403

® TDA7403 BASIC SIGNAL PROCESSOR PRELIMINARY DATA DEVICE INCLUDES AUDIO PROCESSOR, STEREO DECODER AND NOISEBLANKER HIGH PERFORMANCE SIGNAL PROCESSOR WITH BASIC FUNCTIONS AM, FM, MPX AND CASSETTE INPUTS NO EXTERNAL COMPONENTS REQUIRED FULLY PROGRAMMABLE VIA I2C BUS LOW DISTORTION AND NOISE SO20 DESCRIPTION The TDA7403 is a high performance signal processor specifically designed for car radio applications focused on the low-end market. The device includes a complete audioprocessor and a stereo decoder with noiseblanker. Switched-capacitors design technique allows to obtain all these features without external components or adjustments. Using TDA7403 results is in a very performant low-cost signal processing BLOCK DIAGRAM SM ORDERING NUMBER: TDA7403D application The device is fully programmable by I2C bus interface allowing to customize key device parameters and especially filter characteristics. The BICMOS process combined with the optimized signal processing assure low noise and low distortion performances. 11 8 SOFT MUTE OUT LR TREBLE BASS OUT LF OUT RR OUT RF 17 19 16 18 OUT LR OUT LF OUT RR OUT RF AM VOLUME CASS R CASS L 1 2 INPUT MULTIPLEXER + AUTO ZERO 12 DIGITAL CONTROL I2C BUS 13 SCL SDA FM R FM L 9 MPX 80KHz LP PILOT CANCELLATION DEMODULATOR + STEREO ADJUST + STEREO BLEND 25KHz LP S&H HIGH CUT CONTROL 15 VS SUPPLY PLL PIL DET D NOISE BLANKER PULSE FORMER A 10 LEVEL D98AU918 14 GND 20 CREF October 1998 1/26 This is preliminary information o...