Low Power V.32 bis Modem
CMX869
4.1
Power Supply Connections
ANALOGUE
100nF
10uF
100nH (optional)
DIGITAL
C2, C9
C1
L2
C4, C7
C3, C8
L1
100nF
10uF
100nH (optional)
Figure 2b Recommended Power Supply Connections and De-coupling
The inductors L1 and L2 can be omitted but this may degrade system performance.
Ensure that the length of the tracks between capacitors C2, C4, C7 and C9 and their corresponding
CMX869 device pins (pins 12, 23, 20 and 13) are kept as short as possible.
© 2004 CML Microsystems Plc
7
D/869/4