TDA7420

® TDA7420 MULTIFUNCTION AUDIO PROCESSOR CASSETTE PREAMPLIFIER: FORWARD/REVERSE INPUTS GROUND COMPATIBLE INTERNAL SWITCHES FOR EQUALIZATION INTERNAL ADJUSTMENT FOR TRAKING INTERNAL ADJUSTMENT FOR OUTPUT AMS: INPUT GAIN CONTROL ADJUSTABLE GAIN VERSUS FREQUENCY AUDIOPROCESSOR: INPUTS: 1 FULLY DIFFERENTIAL, 1 DIFFERENTIAL, 1 STEREO AND 1 MONO INPUT GAIN FROM 0 TO 15dB (1dB STEP) VOLUME CONTROL FROM +16 TO -63dB (1dB STEP) BASS AND TREBLE CONTROL FROM -18 TO 18dB (1dB STEP) DIRECT MUTE, SOFT MUTE AND RADIO MUTE FOUR INDEPENDENT OUTPUT STAGES: - ATTENUATION CONTROL FROM 0 TO -79dB (1dB STEP) - BEEP CONTROL (ON/OFF, FRONT/REAR) STEREO DECODER: ROLL-OFF ADJUSTMENT SELECTABLE DEEMPHASIS 19KHz CANCELLATION HIGH CUT CONTROL STEREO BLEND NOISE BLANKER AUTOMATIC THRESHOLD CONTROL AND PROGRAMMABLE TRIGGER THRESHOLD INTEGRATED HIGH PASS FILTER PACKAGE: TQFP64 (14x14) TQFP 64 (14x14) ORDERING NUMBER: TDA7420 DESCRIPTION The TDA7420 I 2C bus controlled multifunction audio processor contains all signal processing blocks of a high performance car radio, including audioprocessor, stereodecoder, noise blanker, different mute functions, cassette preamplifier and AMS function. The use of BICMOS technology allows the implementation of several filter functions with switched capacitor techniques like fully integrated, adjustment free PLL Loop filter, pilot detector with integrator. This minimizes the number of external components. Due to a highly linear signal processing, using CMOS-switching tec...