31
Integrated
Circuit
Systems, Inc.
ICS953002
0924—11/18/09
Electrical Characteristics - SRC/SATA/PCIEX 0.7V Current Mode Differential Pair
PARAMETER SYMBOL CONDITIONS* MIN TYP MAX UNITS Notes
Current Source Output Impedance Zo
V
O
= V
x
3000 Ω 1
Voltage High VHigh 660 850 mV 1,3
Voltage Low VLow -150 150 mV 1,3
Max Voltage Vovs 1150 mV 1
Min Voltage Vuds -300 mV 1
Crossing Voltage (abs) Vx(abs) 250 550 mV 1
Crossing Voltage (var) d-Vx
Variation of crossing over all
ed
es
140 mV 1
Long Accuracy ppm see Tperiod min-max values -300 300 ppm 1,2
100.00MHz nominal 9.9970 10.0030 ns 2
100.00MHz spread 9.9970 10.0533 ns 2
Absolute min period Tabsmin 100.00MHz nominal/spread 9.8720 ns 1,2
Rise Time
t
r
V
OL
= 0.175V, V
OH
= 0.525V
175 700 ps 1
Fall Time
t
f
V
OH
= 0.525V V
OL
= 0.175V
175 700 ps 1
Rise Time Variation
d-t
r
V
OL
= 0.175V, V
OH
= 0.525V
125 ps 1
Fall Time Variation
d-t
f
V
OH
= 0.525V V
OL
= 0.175V
125 ps 1
Duty Cycle
d
t3
Measurement from differential
wavefrom
45 55 % 1
Skew
t
sk3
V
T
= 50%
250 ps 1
Jitter, Cycle to cycle
t
jcyc-cyc
Measurement from differential
wavefrom
125 ps 1
*T
A
= 0 - 70°C; V
DD
= 3.3 V +/-5%; C
L
=2pF, R
S
=33.2
Ω
, R
P
=49.9
Ω, Ι
REF
= 475Ω
1
Guaranteed by design and characterization, not 100% tested in production.
2
All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 14.31818MHz
3
I
REF
= V
DD
/(3xR
R
). For R
R
= 475Ω (1%), I
REF
= 2.32mA. I
OH
= 6 x I
REF
and V
OH
= 0.7V @ Z
O
=50Ω.
Statistical measurement on sin
le
ended signal
Measurement on single ended
signal using absolute value.
Average period Tperiod
Electrical Characteristics - PCICLK/PCICLK_F
PARAMETER SYMBOL CONDITIONS* MIN TYP MAX UNITS
NOTES
Output Impedance
R
DSP
V
O
= V
DD
*(0.5)
12 55 Ω
1
Output High Voltage
V
OH
I
OH
= -1 mA
2.4 V
1
Output Low Voltage
V
OL
I
OL
= 1 mA
0.55 V
1
V
OH
@MIN = 1.0 V
-33 mA 1
V
OH
@MAX = 3.135 V
-33 mA 1
V
OL
@ MIN = 1.95 V
30 mA 1
V
OL
@ MAX = 0.4 V
38 mA 1
Edge Rate
t
slewr/f
Rising/Falling edge rate 1 4 V/ns 1
Rise Time
t
r
V
OL
= 0.4 V, V
OH
= 2.4 V
0.5 2 ns
1
Fall Time
t
f
V
OH
= 2.4 V, V
OL
= 0.4 V
0.5 2 ns
1
Duty Cycle
d
t1
V
T
= 1.5 V
45 55
%1
Group Skew
t
skew
V
T
= 1.5 V
500 ps
1
Jitter, Cycle to cycle
t
jcyc-cyc
V
T
= 1.5 V
500 ps
1
*TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%, CL = 20 pF with Rs = 7Ω (unless otherwise specified)
1
Guaranteed b
desi
n and characterization, not 100% tested in
roduction.
Output High Current
I
OH
Output Low Current
I
OL
