Datasheet

AD9515 Data Sheet
Rev. A | Page 4 of 28
TIMING CHARACTERISTICS
CLK input slew rate = 1 V/ns or greater.
Table 3.
Parameter Min Typ Max Unit Test Conditions/Comments
LVPECL Termination = 50 Ω to V
S
− 2 V
Output Rise Time, t
RP
60 100 ps 20% to 80%, measured differentially
Output Fall Time, t
FP
60 100 ps 80% to 20%, measured differentially
PROPAGATION DELAY, t
PECL
, CLK-TO-LVPECL OUT
Divide = 1 355 480 635 ps
Divide = 2 − 32 395 530 710 ps
Variation with Temperature 0.5 ps/°C
OUTPUT SKEW, LVPECL OUTPUT
LVPECL OUT Across Multiple Parts, t
SKP_AB3
1
125 ps
LVDS Termination = 100 Ω differential
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
PROPAGATION DELAY, t
LVDS
, CLK-TO-LVDS OUT Delay off on OUT4
OUT3 to OUT4
Divide = 1 1.00 1.25 1.55 ns
Divide = 2 − 32 1.05 1.30 1.60 ns
Variation with Temperature 0.9 ps/°C
OUTPUT SKEW, LVDS OUTPUT Delay off on OUT4
LVDS OUT Across Multiple Parts, t
SKV_AB
1
230 ps
CMOS B outputs are inverted; termination = open
Output Rise Time, t
RC
650 865 ps 20% to 80%; C
LOAD
= 3 pF
Output Fall Time, t
FC
650 990 ps 80% to 20%; C
LOAD
= 3 pF
PROPAGATION DELAY, t
CMOS
, CLK-TO-CMOS OUT Delay off on OUT4
Divide = 1 1.10 1.45 1.75 ns
Divide = 2 − 32 1.15 1.50 1.80 ns
Variation with Temperature 1 ps/°C
OUTPUT SKEW, CMOS OUTPUT Delay off on OUT4
CMOS OUT Across Multiple Parts, t
SKC_AB
1
300
ps
LVPECL-TO-LVDS OUT Everything the same; different logic type
Output Delay, t
SKP_V
700 970 1150 ps LVPECL to LVDS on same part
LVPECL-TO-CMOS OUT Everything the same; different logic type
Output Delay, t
SKP_C
0.88 1.14 1.43 ns LVPECL to CMOS on same part
DELAY ADJUST (OUT2; LVDS AND CMOS)
S0 = 1/3
Zero Scale Delay Time
2
0.34 ns
Zero Scale Variation with Temperature 0.20 ps/°C
Full Scale Time Delay
2
1.7
ns
Full Scale Variation with Temperature −0.38 ps/°C
S0 = 2/3
Zero Scale Delay Time
2
0.45 ns
Zero Scale Variation with Temperature 0.31 ps/°C
Full Scale Time Delay
2
5.9
ns
Full Scale Variation with Temperature −1.3 ps/°C