YSS205B

The YSS205B is an LSI to carry out audio signal processing needed for "karaoke" systems through digital processing.There are some features as follows.First, 3 channels of 15-bit floating A/D converter and 2 channels of 15-bit floating D/A converter are intergrated to handle audio signals from L and R channels and from the microphone.Secondly, it is possible to input signals directly from CD or LD signal processing LSI's such and to output digital signals to the oversampling digital filter and the D/A converter.Then is 5 operating modes to cope with necessary processing operation.Next is key control fucntion with a maximum variable range of ±1 octave.The fifth is high-quality digital echo function by convoluting multiple taps.The sixth is use of microprocessor serial interface for setting varous parameters.At last, either 384fs or 256fs can be selected for the master clock.

What comes next is about the absolute maximum ratings of YSS205B.The VDD (power supply voltage) is from -0.3 V to +0.7 V.The VIN (input voltage) is from -0.3 V to VDD+0.3 V.The Top (operating temperature) is from -40 to 85.The Tstg (storage temperature) is from -50 to +125.Then is about the recommended operating conditions.The minimum VDD (power supply voltage) is 4.75 V,the typical is 5.0 V and the maximum is 5.25 V.The minimum Top (operating temperature) is 0, the typical is 25 and the maximum is 70.

The following is about the DC characteristics of YSS205B.The maximum PDD (power dissipation) is 300 mW at VDD=5.0 V.The minimum VIH1 (input high voltage) is 2.0 V applicable to input terminals except XI and /IC and is 3.5 V applicable to XI and /IC terminals.The maximum VIL (input low voltage) is 0.8 V.The minimum VOH (output high voltage) is VDD-1.0 V V at IOH=-0.4 mA.The maximum VOL (output low voltage) is 0.4 V at IOL=1.6 mA.The minimum ILI (input leakage current) is -10A and the maximum is 10A.The maximum CIN (input capacitance) is 10 pF and the maximum COUT (output capacitance) is 10 pF.