ICS950227 Datasheet, PDF (12/17 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for P4

Integrated
Circuit
Systems, Inc.
ICS950227
Electrical Characteristics - CPU 0.7V Current Mode Differential Pair
T_A = 0 - 70°C; V_DD = 3.3 V +/-5%; C_L =2pF
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Current Source Output
Impedance
Zo¹
V_O = V_x
3000
Ω
Voltage High
Voltage Low
VHigh
Statistical measurement on single ₆₆₀
770 850
ended signal using oscilloscope
mV
VLow
math function.
-150
5
150
Max Voltage
Min Voltage
Vovs
Vuds
Measurement on single ended
signal using absolute value.
-300
756 1150
-7
mV
Crossing Voltage (abs) Vcross(abs)
250 350 550
mV
Crossing Voltage (var)
d-Vcross
Variation of crossing over all
edges
12 140
mV
Long Accuracy
ppm
see Tperiod min-max values
-300
300
ppm
200MHz nominal
4.9985
5.0015 ns
200MHz spread
4.9985
5.0266 ns
166.66MHz nominal
5.9982
6.0018 ns
Average period
Tperiod
166.66MHz spread
133.33MHz nominal
5.9982
7.4978
6.0320 ns
7.5023 ns
133.33MHz spread
7.4978
5.4000 ns
100.00MHz nominal
9.9970
10.0030 ns
100.00MHz spread
9.9970
10.0533 ns
200MHz nominal
4.8735
ns
Absolute min period
T_absmin
166.66MHz nominal/spread
133.33MHz nominal/spread
5.8732
7.3728
ns
ns
100.00MHz nominal/spread 9.8720
ns
Rise Time
t_r
V_OL = 0.175V, V_OH = 0.525V
175 332 700
ps
Fall Time
t_f
V_OH = 0.525V V_OL = 0.175V
175 344 700
ps
Rise Time Variation
d-t_r
30 125
ps
Fall Time Variation
d-t_f
30 125
ps
Duty Cycle
d_t3
Measurement from differential
wavefrom
45
49
55
%
Skew
t_sk3
V_T = 50%
8
100
ps
Jitter, Cycle to cycle
t_jcyc-cyc
Measurement from differential
wavefrom
60 150
ps
1_{Guaranteed by design, not 100% tested in production.}
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at}
14.31818MHz
NOTES
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1
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1
1,2
2
2
2
2
2
2
2
2
1,2
1,2
1,2
1,2
1
1
1
1
1
1
1
0641D—07/03/03
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