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WM8777SEFT 参数 Datasheet PDF下载

WM8777SEFT图片预览
型号: WM8777SEFT
PDF下载: 下载PDF文件 查看货源
内容描述: 24位192KHZ AV接收机芯片 [24 BIT 192KHZ AV RECEIVER ON A CHIP]
分类和应用: 接收机
文件页数/大小: 102 页 / 1257 K
品牌: WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
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WM8777  
Product Preview  
APPLICATIONS INFORMATION  
EXTERNAL ANALOGUE INPUT 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 43 shows the ADC input multiplexor circuit with external components allowing 2Vrms inputs to  
be applied.  
5K  
AINOPL  
AINVGL  
10uF 10K  
AIN1L  
10uF 10K  
AIN2L  
10uF 10K  
AIN3L  
10uF 10K  
AIN7L  
10uF 10K  
AIN8L  
5K  
SOURCE  
AINOPR  
SELECTOR  
INPUTS  
AINVGR  
AIN1R  
10uF 10K  
10uF 10K  
10uF 10K  
AIN2R  
AIN3R  
10uF 10K  
10uF 10K  
AIN7R  
AIN8R  
Figure 43 ADC Input Multiplexor Confiuration  
4K  
MX1[1]  
10uF  
4K  
4K  
4K  
AUX1L/R  
MX1[0]  
MX1[2]  
DAC1L/R  
BYPASSL/R  
4K  
4K  
MX2[1]  
MX2[0]  
10uF  
SYSTEM  
AUX 5.1  
LINE INPUTS  
4K  
4K  
AUX2L/R  
DAC2L/R  
MX3[1]  
MX3[0]  
10uF  
AUX3L/R  
4K  
4K  
DAC3L/R  
Figure 44 Shows the 5.1Channel Input Multiplexor Configuration  
PP Rev 1.94 November 2004  
98  
w
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