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WM8771 Datasheet(PDF) 41 Page - Wolfson Microelectronics plc

Part # WM8771
Description  24-bit, 192kHz 8-Channel Codec
PDF  44 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8771 Datasheet(HTML) 41 Page - Wolfson Microelectronics plc

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WM8771
w
PP Rev 2.0 December 2001
41
EXTERNAL CIRCUIT CONFIGURATION
In order to allow the use of 2V rms and larger inputs to the ADC and AUX inputs, a structure is used
that uses external resistors to drop these larger voltages. This also increases the robustness of the
circuit to external abuse such as ESD pulse.
Figure 35 shows the ADC input multiplexor circuit with external components allowing 2Vrms inputs to
be applied.
Figure 35 ADC input multiplexor confiuration
AIN1L
10K
10uF
AIN2L
10K
10uF
AIN3L
10K
10uF
AIN7L
10K
10uF
AIN8L
10K
10uF
AIN1R
10K
10uF
AIN2R
10K
10uF
AIN3R
10K
10uF
AIN7R
10K
10uF
AIN8R
10K
10uF
SOURCE
SELECTOR
INPUTS
AINVGR
AINOPR
5K
AINVGL
AINOPL
5K



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