TDA7715LV

TDA7715LV 3 band car audio processor Datasheet - production data Center frequency programmable in 4 steps (10/12.5 /15/17.5 kHz) -15 to 15 dB range with 1 dB resolution SoftStep control with programmable blend times High pass filter LQFP64 (10x10x1.4mm) Two stereo-HPF for output0 and output1 nd 2 order frequency response Programmable cut off frequency Features (50/60/80/100/120/150/180/220 Hz) Low pass filter Input multiplexer One mono-LPF for output2 QD0 to QD3: quasi-differential stereo input nd 2 order low pass filter SE0 to SE4: stereo single-ended input Programmable cut off frequency Loudness nd (50 Hz/60 Hz/80 Hz/100 Hz/120 Hz) 2 order frequency response Speaker Programmable center frequency 6 independent SoftStep speaker controls (400 Hz/800 Hz/2400 Hz) +23 dB to 79 dB with 1 dB steps 15 dB with 1 dB steps SoftStep control with programmable blend Selectable high frequency boost times Selectable flat-mode (constant attenuation) Output driver Volume Four dedicated outputs for an internal (on- +23 dB to 23 dB with 1 dB step resolution board) power amplifier. (share output driver SoftStep control with programmable blend with line driver) times Six line-driver outputs for an external Bass (remote) power amplifier nd 2 order frequency response Mute functions Programmable center frequency Direct mute (60/70/80/100//110/120/130/150 Hz) Main/Sub channel: digitally controlled Q programmable 1.0/1.25/1.5/2.0 SoftMute with 4 programmable mute-times DC gain programmable (0.5 ms/4 ms/8 ms/16 ms) -15 to 15 dB range with 1 dB resolution Speaker: digitally controlled SoftMute with SoftStep control with programmable blend 4 programmable mute-times times (4 ms/8 ms/32 ms/64 ms) Middle AC coupling nd 2 order frequency response Three AC-coupling input Programmable center frequency One AC-coupling output (500 Hz/1 kHz/1.5 kHz/2 kHz) Offset detection Q programmable 1.0/2.0 Offset voltage detection circuit for on-board -15 to 15 dB range with 1 dB resolution power amplifier failure diagnosis SoftStep control with programmable blend times Table 1. Device summary Treble Order code Package Packing nd 2 order frequency response TDA7715LV LQFP64 Tray October 2013 DocID025456 Rev 1 1/52 This is information on a product in full production. www.st.com 0 03 Contents TDA7715LV Contents 1 Description and block circuit diagram 6 1.1 Description . 6 1.2 Block circuit diagram . 6 2 Pins connection and description . 7 2.1 Pins connection . 7 2.2 Pins description . 7 3 Electrical specifications . 10 3.1 Thermal data 10 3.2 Absolute maximum ratings 10 3.3 Electrical characteristics 10 4 Description of audio processor . 16 4.1 Input stage 16 4.1.1 Single-ended stereo input (SE0, SE1, SE2, SE3, SE4) 16 4.1.2 Quasi-differential stereo Input (QD0, QD1, QD2, QD3) . 16 4.1.3 Fast charge 16 4.2 Volume . 17 4.3 Loudness . 17 4.3.1 Loudness attenuation 17 4.3.2 Peak frequency . 18 4.3.3 High frequency boost . 18 4.3.4 Flat mode 19 4.4 SoftMute 19 4.5 Bass . 20 4.5.1 Bass attenuation 20 4.5.2 Center frequency 20 4.5.3 Quality factors 21 4.5.4 DC Mode 21 4.6 Middle 22 4.6.1 Middle attenuation . 22 4.6.2 Middle center frequency 22 2/52 DocID025456 Rev 1