TDA741 系列 SO 20 高性能 3频段 汽车音频处理器
Description
The TDA7418 includes a high performance audio procesor with fully integrated 3-Band filters to processs signals at audible frequencies. The digital control allows a full programming of the audioprocessor and filters characteristics..
Features
■ Input Multiplexer
– PD/SE4: pseudo differential stereo input, programmable as single-ended input
– SE1: stereo single-end input
– SE2: stereo single-end input
– SE3: stereo single-end input
– input gain adjust from 0 to 15dB with 1dB steps
– internal offset-cancellation AutoZero
■ Loudness
– Second order frequency response
– programmable center frequency400Hz/800Hz/2400Hz
– 15dB with 1dB steps
– selectable low & high frequency boost
– selectable flat-mode constant attenuation
■ Volume
– +15dB to -79dB with 1dB step resolution
– soft-step control with programmable blend times
■ Bass
– second order frequency response
– center frequency programmable in 4 steps 60Hz/80Hz/100Hz/200Hz
– Q programmable 1.0/1.25/1.5/2.0
– DC gain programmable
– -15 to 15dB range with 1dB resolution
■ Middle
– second order frequency response
– center frequency programmable in 4 steps 500Hz/1KHz/1.5KHz/2.5KHz
– Q programmable 0.5/0.75/1.0/1.25
– -15 to 15dB range with 1dB resolution
■ Treble
– second order frequency response
– center frequency programmable in 4 steps 10KHz/12.5KHz/15KHz/17.5KHz
– -15 to 15dB range with 1dB resolution
■ Speaker
– 4 independent soft step speaker controls, +15dB to -79dB with 1dB steps direct mute
■ Subwoofer
– single-ended mono output
– independent soft step level control, +15dB to -79dB with 1dB steps
■ Mute Functions
– direct mute
– digitally controlled SoftMute with 3 programmable mute times0.48ms/0.96ms/123ms
