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WM8775SEDS/R データシート(PDF) 36 Page - Wolfson Microelectronics plc

部品番号 WM8775SEDS/R
部品情報  24-bit, 96kHz ADC with 4 Channel I/P Multiplexer
PDF  39 Pages
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メーカー  WOLFSON [Wolfson Microelectronics plc]
ホームページ  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8775SEDS/R データシート(HTML) 36 Page - Wolfson Microelectronics plc

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WM8775
Production Data
w
PD Rev 4.1, June 2006
36
APPLICATIONS INFORMATION
EXTERNAL CIRCUIT CONFIGURATION
In order to allow the use of 2V rms and larger inputs to the ADC 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 28 shows the ADC input multiplexor circuit with external
components allowing 2Vrms inputs to be applied.
AIN1L
10K
10uF
AIN2L
10K
10uF
AIN3L
10K
10uF
AIN4L
10K
10uF
AIN1R
10K
10uF
AIN2R
10K
10uF
AIN3R
10K
10uF
AIN4R
10K
10uF
SOURCE
SELECTOR
INPUTS
AINVGR
AINOPR
5K
AINVGL
AINOPL
5K
Figure 28 ADC Input Multiplexor Configuration



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