ics9ex21501 Integrated Device Technology, ics9ex21501 Datasheet - Page 8

• Manufacturer Part Number: ics9ex21501
• Description: 15 Output Pcie G2/qpi Differential Buffer With 2 1 Input Mux
• Manufacturer: Integrated Device Technology

IDT
TA = T
Notes for preceding table:
1
2
3
4
5
6.
7
8.
9
10
11
12.
ICS9EX21501's must be set to high bandwidth. Differential phase jitter is the accumulation of the phase jitter not shared by the outputs
(eg. not including the affects of spread spectrum). Target ranges of consideration are agents with BW of 1-22Mhz and 11-33Mhz.
13
parameter is measured at the outputs of two separate ICS9EX21501 devices driven by a single CK410B+ in Spread Spectrum mode.
The ICS9EX21501's must be set to high bandwidth. The spread spectrum characteristics are: maximum of 0.5%, 30-33KHz
modulation frequency, triangle profile.
Electrical Characteristics - Skew and Differential Jitter Parameters
This parameter is deterministic for a given device
Measured as maximum pass band gain. At frequencies within the loop BW, highest point of magnification is called PLL jitter peaking.
CLK_IN, DIF[x:0], 100M
CLK_IN, DIF[x:0], 133M
9EX21501
15 Output PCIe G2/QPI Differential Buffer with 2:1 Input Mux
Guaranteed by design and characterization, not 100% tested in production.
Measured into fixed 2 pF load cap. Input to output skew is measured at the first output edge following the corresponding input.
Measured from differential cross-point to differential cross-point.
All Bypass Mode Input-to-Output specs refer to the timing between an input edge and the specific output edge created by it.
Measured with scope averaging on to find mean value.
Measured at 3 db down or half power point.
Long-term variation from nominal of input-to-output skew over temperature and voltage for a single device.
Duty cycle distortion is the difference in duty cycle between the output and the input clock when the device is operated in bypass mod
Measured from differential waveform
®
This parameter is measured at the outputs of two separate ICS9EX21501 devices driven by a single CK410B+. The
Duty Cycle Distortion
Differential spread spectrum tracking error is the difference in spread spectrum tracking between two ICS9EX21501 devices This
Jitter, Cycle to cycle
15 Output PCIe G2/QPI Differential Buffer with 2:1 Input Mux
PLL Jitter Peaking
PLL Jitter Peaking
CLK_IN, DIF[x:0]
CLK_IN, DIF[x:0]
CLK_IN, DIF[x:0]
CLK_IN, DIF[x:0]
CLK_IN, DIF[x:0]
PLL Bandwidth
PLL Bandwidth
PARAMETER
COM
Duty Cycle
DIF{x:0]
or T
IND;
Supply Voltage VDD/VDDA = 3.3 V +/-5%, See Test Loads for Loading Conditions
t
t
SPO_PLL100M
SPO_PLL133M
SYMBOL
t
t
t
DSPO_BYP
SKEW_ALL
j
j
DSPO_PLL
t
pll
t
peak-hibw
peak-lobw
pll
t
PD_BYP
jcyc-cyc
DSSTE
t
t
t
DTE
LOBW
DCD
HIBW
DC
Input-to-Output Skew in Bypass mode
mode across voltage and temperature
Random Differential Spread Spectrum
Measured differentially, Bypass Mode
Input-to-Output Skew Varation in PLL
(Common to Bypass and PLL mode)
beween two 9EX2 devices in Hi BW
Input-to-Output Skew in PLL mode
Input-to-Output Skew in PLL mode
Random Differential Tracking error
Measured differentially, PLL Mode
Bypass mode across voltage and
Input-to-Output Skew Varation in
Tracking error beween two 9EX2
Additive Jitter in Bypass Mode
nominal value @ 25°C, 3.3V
nominal value @ 25°C, 3.3V
nominal value @ 25°C, 3.3V
devices in Hi BW Mode
Output-to-Output Skew
across all outputs
High Bandwidth
High Bandwidth
Low Bandwidth
Low Bandwidth
CONDITIONS
temperature
@100MHz
PLL mode
Mode
8
1100
MIN
925
0.7
45
-2
4
0
0
2
1019
1120
|258|
|771|
TYP
0.87
49.6
4.6
2.3
2.5
2.5
0.2
20
75
27
20
2
1125
1200
MAX
|350|
|900|
150
5.2
1.4
10
75
55
50
50
4
3
3
2
Datasheet
UNITS NOTES
(rms)
MHz
MHz
dB
dB
ps
ps
ns
ps
ps
ps
ps
ps
ps
ps
%
%
1578—01/18/11
1,2,4,5,8
1,2,4,5,8
1,2,3,5,8
1,2,3,5,6
1,2,3,5,6
1,2,3,5,8
1,2,3,5,8
1,2,8
1,10
,12
,13
7,8
7,8
8,9
8,9
,8
,8
1
1
1