Rainbow Electronics AT84AD001B - Manual (Page 53)

53
AT84AD001B
2153C–BDC–04/04
Figure 59. Single-ended Termination Method for Clock I or Clock Q
Output Termination in
1:1 Ratio When using the integrated DMUX in 1:1 ratio, the valid port is port A. Port B remains
unused.
Port A functions in LVDS mode and the corresponding outputs (DOAI or DOAQ) have to
be 100
Ω differentially terminated as shown in Figure 60 on page 54.
The pins corresponding to Port B (DOBI or DOBQ pins) must be left floating (in high
impedance state).
Figure 60 shows the example of a 1:1 ratio of the integrated DMUX for channel I (the
same applies to channel Q).
CLK
CLKB
50
Ω
50
Ω
VCCD
R1
R2
VCCD/2
AC coupling capacitor
AC coupling capacitor
50
Ω
Source
50 Ω