WM8980CGEFLSLASHV datasheet(72/123 Pages) WOLFSON

Part #	WM8980CGEFL/V

Description	Stereo CODEC with Speaker Driver and Video Buffer

PDF	123 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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72 / 123 page

WM8980

Pre-Production

PP, Rev 3.8, May 2012

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.

WM8980CGEFL/V Datasheet(PDF) 72 Page - Wolfson Microelectronics plc