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2 EVM Analog Interface
2.1 ADC Supply, Input, Voltage Reference, and Digital Connections
Figure 2-1
illustrates the decoupling on AVDD, DVDD, HVDD, HVSS, and the reference IO. The capacitors
for decoupling match the recommendations in the ADS8568 data sheet. The layout (see
shortest possible connections to the decoupling capacitors and connections the ground end to the GND plane
using vias. The ADS8568 can use an external or internal voltage reference. This can be selected by changing
the position of JP9 to "INT" for internal, or "EXT" for external.
and digital signal connections.
SBAU193E – JUNE 2011 – REVISED MAY 2021
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Figure 2-1. ADC Signal and Supply Connection
Copyright © 2021 Texas Instruments Incorporated
Figure 2-1
also illustrates the analog input signal
ADS8568EVM-PDK Evaluation Module
EVM Analog Interface
Figure
2-1) uses the
5
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