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WM7130A Datasheet(PDF) 8 Page - Wolfson Microelectronics plc

Part No. WM7130A
Description  Bottom Port Analogue Silicon Microphone
Download  12 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM7130A Datasheet(HTML) 8 Page - Wolfson Microelectronics plc

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WM7130A
Pre-Production
w
PP, Rev 3.1, April 2012
8
CONNECTION TO A WOLFSON AUDIO CODEC
Wolfson provides a range of audio CODECs incorporating an analogue microphone input interface;
these support connection to silicon microphones such as the WM7130A.
The recommended connection of a WM7130A silicon microphone to the WM8994 is illustrated in
Figure 2 (for single-ended mode) and Figure 3 (for pseudo-differential mode).
A DC blocking capacitor is required, as described in the previous section. A 1µF decoupling capacitor
is also recommended; this should be positioned close to the VDD pin of the WM7130A.
Further information on the WM8994 is provided in the product datasheet, which is available from the
Wolfson website. The equivalent connections can be made to other Wolfson devices in a similar
manner.
Figure 2 WM7130A Silicon Microphone Single-ended Connection to WM8994
Figure 3 WM7130A Silicon Microphone Pseudo-differential Connection to WM8994


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