Datasheet

AD9510 Data Sheet
Rev. B | Page 6 of 56
CLOCK OUTPUTS
Table 3.
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
LVPECL CLOCK OUTPUTS
Termination = 50 Ω to V
S
− 2 V
OUT0, OUT1, OUT2, OUT3;
Differential
Output level Register 0x3C, Register 0x3D,
Register 0x3E, Register 0x3F[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
OUT4, OUT5, OUT6, OUT7;
Differential
Output level Register 0x40, Register 0x41,
Register 0x42, Register 0x43[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
OUT4, OUT5, OUT6, OUT7
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 At 1 mA load
Output Voltage Low V
OL
0.1 V At 1 mA load
TIMING CHARACTERISTICS
Table 4.
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions/Comments
LVPECL
Termination = 50 Ω to V
S
− 2 V; output level
Register 0x3C, Register 0x3D, Register 0x3E,
Register 0x3F[3:2] = 10b
Output Rise Time t
RP
130 180 ps 20% to 80%, measured differentially
Output Fall Time t
FP
130 180 ps 80% to 20%, measured differentially
PROPAGATION DELAY, CLK-TO-LVPECL OUT
1
t
PECL
Divide = Bypass 335 490 635 ps
Divide = 2 − 32 375 545 695 ps
Variation with Temperature 0.5 ps/°C
OUTPUT SKEW, LVPECL OUTPUTS
OUT1 to OUT0 on Same Part
2
t
SKP
−5 +30 +85 ps
OUT2 to OUT3 on Same Part
2
t
SKP
15 45 80 ps
All LVPECL OUTs on Same Part
2
t
SKP
90 130 180 ps
All LVPECL OUTs Across Multiple Parts
3
t
SKP_AB
275 ps
Same LVPECL OUT Across Multiple
Parts
3
t
SKP_AB
130 ps
LVDS
Termination = 100 Ω differential; output level
Register 0x40, Register 0x41, Register 0x42,
Register 0x43[2:1] = 01b; 3.5 mA termination
current
Output Rise Time t
RL
200 350 ps 20% to 80%, measured differentially
Output Fall Time
t
FL
210
350
ps
80% to 20%, measured differentially