9FGU0831_16 Datasheet, PDF (9/16 Pages) Integrated Device Technology – 8-O/P 1.5V PCIe Gen 1-2-3 Clock Generator

9FGU0831 DATASHEET
Electrical Characteristics – REF
TA = T_AMB; Supply Voltages per normal operation conditions, See Test Loads for Loading Conditions
PARAMETER
SYMBOL
CONDITIONS
MIN
Long Accuracy
ppm
see Tperiod min-max values
Clock period
Rise/Fall Slew Rate
Rise/Fall Slew Rate
Rise/Fall Slew Rate
Rise/Fall Slew Rate
Duty Cycle
T_period
t_rf1
t_rf1
t_rf1
t_rf1
d_t1X
25 MHz output
Byte 3 = 1F, 20% to 80% of VDDREF
Byte 3 = 5F, 20% to 80% of VDDREF
Byte 3 = 9F, 20% to 80% of VDDREF
Byte 3 = DF, 20% to 80% of VDDREF
V_T = VDD/2 V
0.3
0.5
0.77
0.84
45
Duty Cycle Distortion
d_tcd V_T = VDD/2 V, when driven by XIN/CLKIN_25 pin 0
Jitter, cycle to cycle
Noise floor
Noise floor
t_jcyc-cyc
t_jdBc1k
t_jdBc10k
V_T = VDD/2 V
1kHz offset
10kHz offset to Nyquist
TYP
0
40
0.7
1.0
1.3
1.4
47.1
2
51.2
-126
-139
MAX
1.1
1.6
1.9
2.0
55
4
250
-105
-110
Jitter, phase
t_jphREF
12kHz to 5MHz
1.11
3
1_{Guaranteed by design and characterization, not 100% tested in production.}
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is trimmed to 25.00 MHz}
3 _{Default SMBus Value}
4 _{When driven by a crystal.}
5 _{X2 should be floating.}
UNITS
ppm
ns
V/ns
V/ns
V/ns
V/ns
%
%
ps
dBc
dBc
ps
(rms)
Notes
1,2
2
1
1,3
1
1
1,4
1,5
1,4
1,4
1,4
1,4
Clock Periods - Differential Outputs with Spread Spectrum Disabled
SSC OFF
DIF
Center
Freq.
MHz
100.00
Measurement Window
1 Clock
1us
0.1s
0.1s
0.1s
-c2c jitter
AbsPer
Min
-SSC
Short-Term
Average
Min
- ppm
Long-Term
Average
Min
0 ppm
Period
Nominal
+ ppm
Long-Term
Average
Max
9.94900
9.99900 10.00000 10.00100
1us
+SSC
Short-Term
Average
Max
1 Clock
+c2c jitter Units Notes
AbsPer
Max
10.05100 ns 1,2
Clock Periods - Differential Outputs with Spread Spectrum Enabled
SSC ON
DIF
Center
Freq.
MHz
99.75
Measurement Window
1 Clock
1us
0.1s
0.1s
0.1s
-c2c jitter
-SSC
- ppm
AbsPer ^{Short-Term Long-Term}
Min
Average
Min
Average
Min
0 ppm
Period
Nominal
+ ppm
Long-Term
Average
Max
9.94906 9.99906 10.02406 10.02506 10.02607
1us
+SSC
Short-Term
Average
Max
10.05107
1 Clock
+c2c jitter Units Notes
AbsPer
Max
10.10107 ns 1,2
1_{Guaranteed by design and characterization, not 100% tested in production.}
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is trimmed to}
25.00 MHz
OCTOBER 18, 2016
9
8-O/P 1.5V PCIE GEN 1-2-3 CLOCK GENERATOR