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WM8980CGEFL/V bảng dữ liệu(PDF) 72 Page - Wolfson Microelectronics plc |
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WM8980CGEFL/V bảng dữ liệu(HTML) 72 Page - Wolfson Microelectronics plc |
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72 / 123 page ![]() WM8980 Pre-Production w PP, Rev 3.8, May 2012 72 TEST WAVEFORMS Figure 37 Black Needle Pulse (Full frame of white with a vertical black line) Figure 38 Dual Needle Pulse (50% grey field with closely-spaced white and black vertical lines spaced across the line scan) Figure 39 Multiburst (A horizontal multiburst of signals with frequencies ranging from 0.5MHz to 5.75MHz) Figure 40 White Needle Pulse (A full frame of black with a vertical white line) CURRENT MODE OUTPUT The current mode output employed by the WM8980 video buffer allows VBVDD to operate at lower voltages than voltage mode video buffers, reducing power consumption, while the use of a current reference resistor close to the WM8980 ensures that the signal swing seen at the output of the buffer will be the same as that at the connection to the receiving equipment (e.g. a TV), providing excellent signal reproduction. Current mode output also provides inherent short circuit protection at the signal output. |
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