Datasheet

AD9511
Rev. A | Page 6 of 60
CLOCK OUTPUTS
Table 3.
Parameter Min Typ Max Unit Test Conditions/Comments
LVPECL CLOCK OUTPUTS Termination = 50 Ω to V
S
− 2 V
OUT0, OUT1, OUT2; Differential Output level 3Dh (3Eh) (3Fh)<3:2> = 10b
Output Frequency 1200 MHz See Figure 21
Output High Voltage (V
OH
) V
S
− 1.22 V
S
− 0.98 V
S
− 0.93 V
Output Low Voltage (V
OL
) V
S
− 2.10 V
S
− 1.80 V
S
− 1.67 V
Output Differential Voltage (V
OD
) 660 810 965 mV
LVDS CLOCK OUTPUTS Termination = 100 Ω differential; default
OUT3, OUT4; Differential
Output level 40h (41h)<2:1> = 01b
3.5 mA termination current
Output Frequency 800 MHz See Figure 22
Differential Output Voltage (V
OD
) 250 360 450 mV
Delta V
OD
25 mV
Output Offset Voltage (V
OS
) 1.125 1.23 1.375 V
Delta V
OS
25 mV
Short-Circuit Current (I
SA
, I
SB
) 14 24 mA Output shorted to GND
CMOS CLOCK OUTPUTS
OUT3, OUT4
Single-ended measurements;
B outputs: inverted, termination open
Output Frequency 250 MHz With 5 pF load each output; see Figure 23
Output Voltage High (V
OH
) V
S
-0.1 V @ 1 mA load
Output Voltage Low (V
OL
) 0.1 V @ 1 mA load