BU2185F

Multimedia ICs Clock generator BU2185F This IC generates the different clock used for DVD. Generates clocks for CD use, sound use, and MPEG use. Applications DVD players Features 1) By connecting a crystal oscillating element, the different clock signals are generated. 2) Enables selection of the reference clock directly or with 1 / 2 output. 3) SOP 16-pin package. 4) Single 3.3V power supply. 5) With the standard clock output, an independent 5V power supply can be applied for a 5V output. Block diagram DATA1A DATA1B XTAL1 IN XTAL1 OSC XTAL1 OUT PLL1 CLK2 (27.0000MHz ) SW CTRL1 H CLK1 (36.8640MHz) (18.4320MHz) L CTRL2 1/2 XTAL2 IN XTAL2 OSC XTAL 2OUT DATA2A DATA2B PLL2 CLK3 (33.8688MHz) OE CTRL1 H L H L CTRL2 L L H H DATA1A = XTAL2 ∗ DATA1B = XTAL2 ∗ DATA2A = XTAL2 ∗ DATA2B = XTAL2 ∗ SW H L H L 375 / 128 / 4 375 / 64 / 4 147 / 40 / 4 147 / 20 / 4 PLL1 DATA1A DATA1A DATA1B DATA1B PLL2 DATA2A DATA2A DATA2B DATA2B 1 Multimedia ICs BU2185F Absolute maximum ratings (Ta = 25°C) Parameter Applied voltage Input voltage Power dissipation Storage temperature Symbol VDD VIN Pd Tstg Limits – 0.5 ~ + 7.0 – 0.5 ~ VDD + 0.5 450∗ – 30 ~ + 125 Unit V V mW °C ᭺Does not represent guaranteed performance. ∗ Reduced by 4.5mW for increase in Ta of 1°C over 25°C. ᭺Not designed for radiation resistance. Recommended operating conditions (Ta = 25°C) Parameter Power supply voltage Input high level voltage Input low level voltage Operating temperature Output load Symbol VDD VIH ...