WM8941GEFL WOLFSON [Wolfson Microelectronics plc], WM8941GEFL Datasheet - Page 53
![no-image](/images/no-image-200.jpg)
WM8941GEFL
Manufacturer Part Number
WM8941GEFL
Description
Mono CODEC with Speaker Driver and Video Buffer
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM8941GEFL.pdf
(96 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
WM8941GEFL
Manufacturer:
WOLFSON
Quantity:
20 000
- Current page: 53 of 96
- Download datasheet (2Mb)
Pre Production
w
VIDEO BUFFER
DESCRIPTION
Figure 25 Video Buffer
LOW PASS FILTER
The WM8941 incorporates a current mode output video buffer capable of operating from a 2.5V
supply, with an input 3
programmed as 0dB or 6dB (=6dB or 12dB unloaded) via the control interface. The current mode
output means 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). Note that the input to the receiver should be AC
coupled and terminated to 75Ω, as is standard, for best performance.
The input clamp should be enabled when using AC coupling at the input to the video buffer, using
the VBCLAMPEN register bit.
Care should be taken with PCB layout, designing for at least 1GHz frequencies to avoid degrading
performance. Vias and sharp corners should be avoided and parasitic capacitance minimised on
signal paths, which should be kept as short and straight as possible. The VBVDD supply should be
decoupled as close to the pin as possible. See the “External Components” section for more
information.
A low pass filter is integrated at the video buffer input, which is intended to remove images in the
video DAC output waveform at multiples of the DAC clock frequency. A 3
used, with the following characteristics:
rd
order Low Pass Filter (LPF) and clamp. The gain through this buffer can be
PP, Rev 3.3, December 2007
rd
order Butterworth filter is
WM8941
53
Related parts for WM8941GEFL
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![wm8941](/images/no-image3.png)
Part Number:
Description:
Mono Codec With Speaker Driver And Video Buffer
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
![WM8351CGEB/RV](/images/no-image3.png)
Part Number:
Description:
Wolfson AudioPlus™ Stereo CODEC with Power Management
Manufacturer:
WOLFSON [Wolfson Microelectronics plc]
Datasheet:
![WM9701A](/images/no-image3.png)
Part Number:
Description:
WM9701ALow Power AC97 Multimedia Audio Codec
Manufacturer:
WOLFSON Wolfson Microelectronics plc
Datasheet:
![WM8973LGEFL](/images/no-image3.png)
Part Number:
Description:
WM8973LGEFLSTEREO CODEC FOR PORTABLE AUDIO APPLICATIONS
Manufacturer:
WOLFSON Wolfson Microelectronics plc
Datasheet:
![wm8350](/images/no-image3.png)
Part Number:
Description:
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
![wm8351](/images/no-image3.png)
Part Number:
Description:
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
![wm8352](/images/no-image3.png)
Part Number:
Description:
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
![wm2000](/images/no-image3.png)
Part Number:
Description:
Handset Receiver Speaker Driver With Wolfson Myzone Ambient Noise Cancellation
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
![wm2002](/images/no-image3.png)
Part Number:
Description:
Stereo Headphone Driver With Wolfson Myzonetm Ambient Noise Cancellation
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
![wm8400](/images/no-image3.png)
Part Number:
Description:
Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
![WM9701A](/images/no-image3.png)
Part Number:
Description:
WM9701ALow Power AC97 Multimedia Audio Codec
Manufacturer:
WOLFSON Wolfson Microelectronics plc
Datasheet:
![WM8973LGEFL](/images/no-image3.png)
Part Number:
Description:
WM8973LGEFLSTEREO CODEC FOR PORTABLE AUDIO APPLICATIONS
Manufacturer:
WOLFSON Wolfson Microelectronics plc
Datasheet:
![WM9711](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
![WM9705](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics plc
Datasheet:
![WM9707](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics plc
Datasheet: