ICS843004 Datasheet, PDF (4/16 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ LVCMOS/CRYSTAL-TO- 3.3V LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS843004
FEMTOCLOCKS™ LVCMOS/CRYSTAL-TO-
3.3V LVPECL FREQUENCY SYNTHESIZER
TABLE 4. CRYSTAL CHARACTERISTICS
Parameter
Test Conditions
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
NOTE: Characterized using an 18pF parallel resonant crystal.
Minimum Typical Maximum
Fundamental
23.33 26.5625 28.33
50
7
Units
MHz
Ω
pF
TABLE 5. AC CHARACTERISTICS, V_CC = V_CCA = V_CCO = 3.3V±5%, TA = -30°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
F_SEL[1:0] = 00
186.67
f_OUT
Output Frequency
F_SEL[1:0] = 01
F_SEL[1:0] = 10
140
93.33
F_SEL[1:0] = 11
46.67
t_PD
Propagation Delay, NOTE 1
nPLL_SEL = 1
3.0
tsk(o) Output Skew; NOTE 2, 4
212.5MHz, (637KHz - 10MHz)
0.70
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 3
159.375MHz, (637KHz - 10MHz)
156.25MHz, (1.875MHz - 20MHz)
106.25MHz, (637KHz - 10MHz)
0.75
0.58
0.81
53.125MHz, (637KHz - 10MHz)
0.98
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
300
F_SEL[1:0] ≠ 00
49
F_SEL[1:0] = 00
45
NOTE 1: Measured from the differential input crossing point to the output at V_CCO/2.
NOTE 2: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at V_CCO/2.
NOTE 3: Please refer to the Phase Noise Plot.
NOTE 4: This parameter is defined in accordance with JEDEC Standard 65.
Maximum
226.66
170
113.33
56.66
3.8
30
600
51
55
Units
MHz
MHz
MHz
MHz
ns
ps
ps
ps
ps
ps
ps
ps
%
%
843004AG
www.icst.com/products/hiperclocks.html
4
REV. A NOVEMBER 18, 2004