CS5368
3.1 Suggested Analog Input Buffer
Figure 7. "Recommended Analog Input Buffer" shows a recommended analog input buffer for a differential
to differential topology. For additional configurations, refer to Crystal Application Note number AN241. A
low-cost, single-ended (RCA jack) to differential solution is shown in the schematics of the Customer Eval-
ution Board Datasheet (CDB5368).
AIN+
100 kΩ
10 uF
AIN-
100 kΩ
10 uF
634 Ω
470 pF
COG
-
+
10 k Ω
VQ
10 k Ω
+
-
470 pF
COG
91 Ω
91 Ω
634 Ω
ADC AIN+
COG
2700 pF
ADC AIN-
Figure 7. Recommended Analog Input Buffer
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DS624A1