1 a/d converter power supply – Digi RCM4000 User Manual
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User’s Manual
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4.4.1 A/D Converter Power Supply
The analog section is isolated from digital noise generated by other components by way of a
low-pass filter composed of C1, L1, and C3 on the RCM4000 as shown in Figure 13. The
+V analog power supply powers the A/D converter chip.
Figure 13. Analog Supply Circuit
+V
+3.3 V
C1
2.2 nF
C3
100 nF
L1