YSS222-D

The YSS222-D is a kind of audio signal processing LSI for the key control function of one channel. The features of YSS222-D can be summarized as (1)key control of -1800 cent to +1200 cent by 100 cent; (2)14-bit floating A/D and D/A converter are built-in to cope with analog signal; (3)sampling frequency of the internal signal processing is 16 kHz; (4)sampling frequency of the A/D converter and D/A converter is 32 kHz; (5)RAM for the key control processing is built-in; (6)three selective modes for specifying the amount of the key shift:; (7)analog voltage mode: specification by analog voltage, switch pulse mode: specification by pulse input from switch and microprocessor pulse mode: specification by pulse input from microprocessor; (8)master clock is 768 kHz (48 fs); (9)5 V single power supply and Si-gate CMOS process; (10)16-pin DIP (YSS222-D) or 24-pin SOP (YS222-M).

The absolute maximum ratings of the YSS222-D are: (1)power supply voltage, VDD: -0.5 to 7.0 V; (2)input voltage, VI: -0.5 to VDD+0.5 V; (3)output current, IO: -20 to 20 mA; (4)operating temperature, Top: 0 to 70; (5)storage temperature, Tstg: -50 to 125.

The following is about the electrical characteristics of YSS222-D: (1)power supply current: 9mA max at VDD=5.5V; (2)input highlevel voltage: 0.7VDD min; (3)input lowlevel voltage: 0.3VDD max; (4)output highlevel voltage: VDD-0.5 min; (5)output lowlevel voltage: 0.4V max; (6)input capacitance: 8pF max at f=1MHz; (7)output capacitance: 10pF max.