ICS9DB102
Two Output Differential Buffer for PCIe Gen1 & Gen2
Electrical Characteristics - PCIEX 0.7V Current Mode Differential Pair
Ω
Ω
Ω
TA = Tambient; VDD = 3.3 V +/-5%; CL =2pF, RS=33.2 , RP=49.9 , IREF = 475
PARAMETER
Current Source Output
Impedance
SYMBOL
Zo
CONDITIONS
MIN
TYP
MAX
UNITS NOTES
Ω
VO = Vx
3000
1
Voltage High
VHigh
VLow
Vovs
Vuds
Statistical measurement on
single ended signal using
660
850
150
1,3
1,3
1,3
1,3
mV
mV
mV
mV
Voltage Low
-150
Max Voltage
Measurement on single ended
signal using absolute value.
1150
Min Voltage
-300
250
Crossing Voltage (abs) Vcross(abs)
Crossing Voltage (var) d-Vcross
350
12
550
140
1,3
1,3
Variation of crossing over all
edges
Long Accuracy
Average period
ppm
see Tperiod min-max values
100.00MHz nominal
0
ppm
ns
1,2
2
9.9970
9.9970
9.8720
175
10.0030
10.0533
Tperiod
100.00MHz spread
ns
2
Absolute min period
Rise Time
Tabsmin
100.00MHz nominal/spread
VOL = 0.175V, VOH = 0.525V
ns
1,2
1
tr
tf
700
700
125
125
150
4.2
ps
Fall Time
VOH = 0.525V VOL = 0.175V
175
ps
ps
ps
ps
ns
1
1
1
1
1
Rise Time Variation
Fall Time Variation
d-tr
d-tf
tpd
30
30
PLL Mode.
0
Input to Output Delay
tpdbyp
Bypass mode
Measurement from differential
wavefrom
3.7
Duty Cycle
dt3
45
55
25
%
1
1
Output-to-Output Skew
tsk3
VT = 50%
ps
PLL mode. Measurement from
differential wavefrom
tjcyc-cyc
35
30
ps
ps
1
1
Jitter, Cycle to cycle
tjcyc-cycbyp
Additve Jitter in Bypass Mode
1Guaranteed by design, not 100% tested in production.
2 The 9DB102 does not add a ppm error to the input clock
.
3IREF = VDD/(3xRR). For RR = 475 (1%), IREF = 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ ZO=50 .
Ω
Ω
IDT® Two Output Differential Buffer for PCIe Gen1 & Gen2
852 REV K 04/01/10
4
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
