YSF224B-ME2

The YSF224B-ME2 is a digital processing LSI which performs frequency filtering and level detection necessary for spectrum analysis of the audio signals. The features of YSF224B-ME2 can be summarized as (1)level detection processing is performed on the digital data of 32k to 48kHz sampling frequency; (2)de-emphasis compensation is performed before the level is detected; (3)using the 2nd order IIR filter, the level detection of the bands up to seven bands and the total level detection are possible; (4)the band frequancy can be also set arbitrarily.

The absolute maximum ratings of the YSF224B-ME2 are:(1)power supply voltage: -0.3 to 7.0V; (2)input voltage: -0.3 to VDD+0.3V; (3)operating temperature: -40 to 85; (4)storage temperature: -50 to 125.

The following is about the electrical characteristics of YSF224B-ME2: (1)power supply current: 10mA 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 leak current: -1A min and 1A max; (7)pull-up registance: 60k min and 600k max; (8)input capacity: 8pF max at f=1MHz; (9)output capacity: 10pF max at f=1MHz.