CDB5571-1 Cirrus Logic Inc, CDB5571-1 Datasheet - Page 9
![ADC Development Tool](/photos/24/9/240921/4607410_sml.jpg)
CDB5571-1
Manufacturer Part Number
CDB5571-1
Description
ADC Development Tool
Manufacturer
Cirrus Logic Inc
Datasheet
1.CDB5571.pdf
(26 pages)
Specifications of CDB5571-1
Silicon Manufacturer
Cirrus Logic
Application Sub Type
ADC
Kit Application Type
Data Converter
Silicon Core Number
CS5571
Kit Contents
100 KSPS, 16-bit Delta-Sigma ADC Evaluation Board
Rohs Compliant
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
APPENDIX A. MAXIMIZING THE PERFORMANCE OF THE CS5571
A.1
A.2
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.
DS768DB4
PCB Layout Considerations
Hardware Considerations
• Keep the signal path short between the CS5571 ADC input capacitors C37, C44 and the ADC
• The analog input buffer amplifiers and ADC input buffer capacitors are placed before the multi-
• Power supply noise is a major design consideration and the power supplies need adequate
• When operating the ADC from +2.5 V and -2.5 V split supplies, place the power supply & buffer
• Keep all ground connections on each differential buffer amplifier as close to the device as pos-
• 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
• Minimize ADC digital output edge transition current loading.
input pin to minimize trace inductance.
plexer. Placing the buffer amplifiers before the multiplexer allows the amplifiers driving the ADC
buffer capacitors to be fully settled when sampled by the ADC. Therefore, the multiplexer must
be of a low on-resistance type to prevent distortion or latency issues.
bypassing and bulk capacitance.
amplifier bypass capacitor ground connections close together.
sible to avoid introducing differential noise through high-impedance connections.
voltage dependencies.
CDB5571
9