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CDB5560-2 参数 Datasheet PDF下载

CDB5560-2图片预览
型号: CDB5560-2
PDF下载: 下载PDF文件 查看货源
内容描述: [50 kSps, 24-bit ADCEvaluation Board]
分类和应用:
文件页数/大小: 26 页 / 1558 K
品牌: CIRRUS [ CIRRUS LOGIC ]
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CDB5560-2  
APPENDIX A. MAXIMIZING THE PERFORMANCE OF THE CS5560  
A.1 PCB Layout Considerations  
• Keep the signal path short between the CS5560 ADC input capacitors C20, C28 and the ADC  
input pins to minimize trace inductance.  
• Power supply noise is a major design consideration and the power supplies need adequate  
bypassing and bulk capacitance.  
• When operating the ADC from +2.5 V and -2.5 V split supplies, place the power supply & buffer  
amplifier bypass capacitor ground connections close together.  
• Keep all ground connections on each differential buffer amplifier as close to the device as pos-  
sible to avoid introducing differential noise through high-impedance connections.  
• Keep trace lengths short between the ADC and the voltage reference IC negative supply pins.  
• Route the oscillator output away from analog circuitry.  
• Use a solid ground plane in the PCB layout.  
• Provide adequate separation between analog and digital signals.  
To minimize distortion within the analog signal path, consider using components with smaller  
voltage dependencies.  
• Minimize ADC digital output edge transition current loading.  
A.2 Hardware Considerations  
At a system level, use shielded cable for interconnects. Keep interconnect cable lengths as short as pos-  
sible. Route analog and digital signals connecting to the PCB away from each other.  
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DS790DB2