PT12917 Datasheet | PTC

DESCRIPTION The PT12917 is a car audio processor with 6 input sources selector and 3-band equalizer, which includes a fully integrated high performance audio filters that are built into a single chip to provide audio system having the highest audio performance and reliability. Digital control allows programming in a wide range of filter characteristics. APPLICATION - Car audio system FEATURES - Controlled by I2C Bus Micro-processor interface - Input gain from 0 to +15d B with 1d B/step - 4 stereo inputs for audio sources - 1 Quasi-Differential input for external auxiliary input. - 1 Fully-Differential input for auxiliary input or disc changer. - 2 mono mixing inputs for GPS navigation system and mobilephone. - 2 channels electronic volume with soft step, from +15 to -79d B with 1d B/step - Soft mute - 1 mono output with soft step volume for subwoofer, from +15 to -79d B with 1d B/step - 3 band equalizer with gain, Q-factor and center frequency programmable, bass and middle band with soft step gain. - Frequency and gain programmable loudness : 0 to -15d B with 1d B/step and soft step - 4 independent speaker outputs volume with soft step: from +15 to -79d B with 1d B/step - 28-pin SOP package BLOCK DIAGRAM MONO1 26 MONO2 25 SE4L 28 SE4R 27 FDL+ 1 FDL- 2 FDR+ 3 FDR- 4 SE3L 5 SE3R 6 SE2L 7 SE2R 8 SE1L 9 SE1R 10 QDL 11 QDG 12 QDR 13 INPUT MULTIPLEXER Soft Step Mixing Volume Soft Step Mixing Volume In Gain Soft Step Loudness Soft Mute Soft Step Volume Treble Soft Step Middle Soft Step Bass L+R SUPPLY DIGITAL I2C CONTROL BUS 24 15 14 VDD GND CREF 21...