مدار مجتمع (آی سی) آی‌سی صوتی ویژه

Product Attributes

Introduction

The TDA7404 is a high performance signal processor specifically designed for car radio applications. The device includes a high performance audioprocessor with fully integrated audio filters. The digital control allows a programming in a wide range of all the filter characteristics. By the use of a BiCMOS process and a linear signal processing low distortion and low noise are obtained.

Features

• 4 stereo inputs 1 mono input
• Soft-step volume
• Bass, Treble and Loudness control
• Direct -mute and soft-mute
• Internal beep
• Four independent speaker outputs
• Subwoofer stereo output
• Digital control: I2C bus interface
• Audio filter characteristics programmable
• Input multiplexer
• 1 pseudo-differential stereo input (selectable single end stereo input)
• 3 single-end stereo inputs
• 1 differential mono input
• In-Gain 0..14 dB, 1 dB steps, 14..20 dB, 2 dB steps
• Auto Zero
• Internal beep with 3 frequencies 781 Hz/1.56 kHz/1.8 kHz
• 4 step-mixing-stage with mono or beep as mix-signals
• Loudness second order frequency response programmable center frequency 15x1 dB steps selectable low and high frequency boost selectable flat-mode (constant attenuation)
• Volume 1 dB attenuator 100 dB range soft-step control with programmable times
• Bass 2nd order frequency response center frequency programmable in 4 steps 60 Hz / 80 Hz / 100 Hz / 200 Hz Q programmable 1.0/1.25/1.5/2.0 DC gain programmable ±15 dB x 1 dB steps
• Treble 2nd order frequency response center frequency programmable in 4 steps 10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz ±15 dBx1 dB steps
• 4 independent speaker controls in 1 dB steps control range 50 dB with mute Zero crossing attenuate
• Subwoofer Stereo output attenuator range 50 dB
• Mute functions direct mute digitally controlled Soft Mute with 4 programmable mute-times