English
Language : 

ICS8421004I Datasheet, PDF (5/13 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-HSTL FREQUENCY SYNTHESIZER
◁
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS8421004I
FEMTOCLOCKS™ CRYSTAL-TO-
HSTL FREQUENCY SYNTHESIZER
TABLE 5A. AC CHARACTERISTICS, VDD = VDDA = 3.3V±5%, VDDO = 1.8V±0.2V, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
F_SEL[1:0] = 00
186.67
226.66 MHz
f
Output Frequency
OUT
F_SEL[1:0] = 01
F_SEL[1:0] = 10
140
93.33
170
113.33
MHz
MHz
F_SEL[1:0] = 11
46.67
56.66 MHz
tsk(o) Output Skew; NOTE 1, 3
TBD
ps
212.5MHz, (637kHz - 10MHz)
0.59
ps
187.5MHz, (637kHz - 10MHz)
0.53
ps
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 2
159.375MHz, (637kHz - 10MHz)
156.25MHz, (1.875MHz - 20MHz)
0.56
0.50
ps
ps
106.25MHz, (1.875MHz - 20MHz)
0.56
ps
53.125MHz, (637kHz - 10MHz)
0.66
ps
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
450
ps
50
%
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at V /2.
DDO
NOTE 2: Please refer to the Phase Noise Plot.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
TABLE 5B.
AC
CHARACTERISTICS,
V
DD
=
V
DDA
=
2.5V±5%,
V
DDO
= 1.8V±0.2V, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
F_SEL[1:0] = 00
186.67
f
Output Frequency
OUT
F_SEL[1:0] = 01
F_SEL[1:0] = 10
140
93.33
F_SEL[1:0] = 11
46.67
tsk(o) Output Skew; NOTE 1, 3
TBD
212.5MHz, (637kHz - 10MHz)
0.60
187.5MHz, (637kHz - 10MHz)
0.72
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 2
159.375MHz, (637kHz - 10MHz)
156.25MHz, (1.875MHz - 20MHz)
0.64
0.50
106.25MHz, (1.875MHz - 20MHz)
0.55
53.125MHz, (637kHz - 10MHz)
0.68
tR / tF
Output Rise/Fall Time
20% to 80%
420
odc
Output Duty Cycle
50
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at V /2.
DDO
NOTE 2: Please refer to the Phase Noise Plot.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
Maximum
226.66
170
113.33
56.66
Units
MHz
MHz
MHz
MHz
ps
ps
ps
ps
ps
ps
ps
ps
%
8421004AGI
www.icst.com/products/hiperclocks.html
5
REV. A MARCH 29, 2005
 ▷