ICS950812 Datasheet, PDF (10/30 Pages) Integrated Circuit Systems – Frequency Generator with 200MHz Differential CPU Clocks

ICS950812
Frequency Generator with 200MHz Differential CPU Clocks
Electrical Characteristics - CPU (0.7V Select) 133.33MHz
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
Rise Time Variation
d-t_r
Fall Time Variation
d-t_f
V_OH = 0.525V V_OL = 0.175V (Fig. 3)
Duty Cycle
d_t3
Measurement from differential wavefrom (Fig 1)
Skew
t_sk3
V_T = 50%
Jitter, Cycle to cycle
t_jc
yc-c
1
yc
V_T = 50% (Fig. 1)
1_{Guaranteed by design, not 100% tested in production.}
2 _{IOWT can be varied and is selectable thru the MULTSEL pin.}
MIN
3000
7.50
660
-150
-450
250
175
175
45
TYP
7.51
718
17
730
7
340
15
310
315
5
5
51
14
75
MAX UNITS
Ω
7.65 ns
850
150
mV
1150 _mV
550 mV
140 mV
810 ps
810 ps
125 ps
125 ps
55
%
100 ps
175 ps
Electrical Characteristics - PCICLK Buffered Mode
T_A = 0 - 90°C; VDD = 3.3V +/-5%; C_L = 10-30 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
Output Impedance
R_DSP11
V_O = V_DD*(0.5)
Output High Voltage
V_OH1
I_OH = -1 mA
Output Low Voltage
V_OL1
I_OL = 1 mA
Output High Current
I_OH1
V_OH@MIN = 1.0V, V_OH@MAX = 3.135V
Output Low Current
I_OL1
V_{OL @MIN} = 1.95V, V_{OL @MAX} = 0.4V
Rise Time
t_r11
V_OL = 0.4 V, V_OH = 2.4 V (Fig. 7)
Fall Time
t_f11
V_OH = 2.4 V, V_OL = 0.4 V (Fig. 7)
Duty Cycle
d_t11
V_T = 1.5 V
Skew
t_sk11
V_T = 1.5 V
Jitter,cycle to cyc
t_jcyc-cyc1
V_T = 1.5 V (Additive) (Fig. 8)
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
12 33 65
Ω
2.05
V
0.65 V
-33
-28 mA
26
38 mA
0.5 1.4 2.3 ns
0.5 1.2 2.3 ns
45 52 55
%
35 500 ps
60 120 ps
IDT^TM Frequency Generator with 200MHz Differential CPU Clocks
10
0542J—01/25/10