ICS950812 Datasheet, PDF (9/30 Pages) Integrated Circuit Systems – Frequency Generator with 200MHz Differential CPU Clocks

ICS950812
Frequency Generator with 200MHz Differential CPU Clocks
Electrical Characteristics - CPU (1V Select) 100MHz
T_A = 0 - 90°C; VDD=3.3V +/-5%; C_L = 10-20 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
Current Source Output
Impedance
Zo¹
V_O = V_x
Average Period
T_PERIOD
Fig. 5
Output High Voltage
Output Low Voltage
V_OH3
V_OL3
Measured from Single Ended Waveform
Rise Time
t_r3
V_OL = 0.41V, V_OH = 0.86V (Fig. 6)
Fall Time
t_f3
V_OH = 0.86V V_OL = 0.41V (Fig.6)
Duty Cycle
d_t3
Fig. 5
Skew
t_sk3
Jitter, Cycle to cycle
t_jcyc
1
-cyc
1_{Guaranteed by design, not 100% tested in production.}
V_T = 50%
V_T = 50%
2 _{IOWT can be varied and is selectable thru the MULTSEL pin.}
MIN TYP MAX UNITS
2500
Ω
10.00 10.01 10.20 ns
0.92
1.45
V
-0.2
0.35
175 390 540 ps
175 305 540 ps
45 51 55
%
10 100 ps
40 175 ps
Electrical Characteristics - CPU (0.7V Select) 100MHz
T_A = 0 - 90°C; VDD=3.3V +/-5%; (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
Current Source Output
Impedance
Zo¹
V_O = V_x
Average Period
Voltage High
T_PERIOD
VHigh
Fig. 1
Statistical measurement on single ended signal
Voltage Low
VLow
using oscilloscope math function.
Max Voltage
Vovs
Measurement on single ended signal using
Min Voltage
Vuds
absolute value.
Crossing Voltage (abs) Vcross(abs)
Fig. 3
Crossing Voltage (var) d-Vcross
Variation of crossing over all edges (Fig. 4)
Rise Time
t_r
V_OL = 0.175V, V_OH = 0.525V (Fig. 3)
Fall Time
t_f
V_OH = 0.525V V_OL = 0.175V (Fig. 3)
Rise Time Variation
d-t_r
Fall Time Variation
d-t_f
Duty Cycle
d_t3
Measurement from differential wavefrom (Fig 1)
Skew
t_sk3
Jitter, Cycle to cycle
t_jcyc-cyc1
1_{Guaranteed by design, not 100% tested in production.}
V_T = 50%
V_T = 50% (Fig. 1)
2 _{IOWT can be varied and is selectable thru the MULTSEL pin.}
MIN TYP MAX UNITS
3000
Ω
10.00 10.01 10.20 ns
660 720 850 _mV
-150 15 150
750 1150 _mV
-450 -2
250 319 550 mV
12 140 mV
175 310 810 ps
175 300 810 ps
10 125 ps
10 125 ps
45 51 55
%
16 100 ps
48 175 ps
IDT^TM Frequency Generator with 200MHz Differential CPU Clocks
9
0542J—01/25/10