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SM8721AB 데이터시트(PDF) 1 Page - Nippon Precision Circuits Inc |
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SM8721AB 데이터시트(HTML) 1 Page - Nippon Precision Circuits Inc |
1 / 8 page SM8721AB SEIKO NPC CORPORATION —1 3-PLL Multi-Output Clock Generator OVERVIEW The SM8721AB is a clock generator IC with 3 built-in PLLs. It can simultaneously generate and output 3 clocks with different frequency derived from a single master clock. The generated output clock frequency can be switched using control pins and one clock can be turned ON/OFF (CLK2). The master clock can be selected from a low-cost 14.31818MHz or small 28.636363MHz crystal. The device is available in compact 20-pin QFN packages, making it ideal for portable digital still cameras and other applications which require multiple clocks. FEATURES I 3.0 to 3.6V supply voltage I Crystal oscillator circuit built-in I 14.318182/28.636363MHz master clock (internal PLL reference clock) I Generated clocks • 14.318182/17.734450MHz (REF_CLK) • 71.877274/90.314686/96.016044 /114.54546MHz (CLK1) • 48.008022/96.016044MHz (CLK2) I Low jitter output • 30ps typ. (1-sigma) • 180ps typ. (peak-to-peak) I Output load • 15pF I 20-pin QFN package (Pb free) APPLICATIONS I Digital still cameras ORDERING INFORMATION PINOUT (Top view) PACKAGE DIMENSIONS (Unit: mm) Weight: 0.037g Device Package SM8721AB 20-pin QFN 12 345 15 14 13 12 11 10 9 8 7 6 16 17 18 19 20 FS1 FS2 FS3 XTAL_SEL TEST1 CLK2 VSS2 VDD2 REF_CLK TEST2 0.60 ± 0.10 0.22 ± 0.05 4.00 ± 0.10 1 5 6 10 11 15 16 20 4.20 ± 0.20 0.50 0.05 M 0.05 |
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