Datasheet

ADF4159 Data Sheet
Rev. D | Page 6 of 36
Table 3. Read Timing
Parameter Limit at T
MIN
to T
MAX
Unit Description
t
1
1
t
PFD
+ 20 ns min TX
DATA
setup time
t
2
20 ns min CLK setup time to data (on MUXOUT)
t
3
25 ns min CLK high duration
t
4
25 ns min CLK low duration
t
5
10
ns min
CLK to LE setup time
1
t
PFD
is the period of the PFD frequency; for example, if the PFD frequency is 50 MHz, t
PFD
= 20 ns.
Read Timing Diagram
CLK
t
4
t
3
MUXOUT
DB36 DB35
DB1DB2
DB0
TX
DATA
t
1
t
2
LE
t
5
NOTES
1. LE SHOULD BE KEPT HIGH DURING READBACK.
10849-003
Figure 3. Read Timing Diagram
TO MUXOUT
PIN
C
L
10pF
500µA
I
OL
100µA
I
OH
0.9V
10849-004
Figure 4. Load Circuit for MUXOUT Timing, C
L
= 10 pF