ICS8430-71B Datasheet, PDF (6/16 Pages) Integrated Circuit Systems – 700MHZ, LOW JITTER, CRYSTAL INTERFACE / LVCMOS-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS8430B-71
700MHZ, LOW JITTER, CRYSTAL INTERFACE/
LVCMOS-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
TABLE 5. INPUT CHARACTERISTICS, V_CC = V_CCA = V_CCO = 3.3V±5%, TA = 0°C TO 70°C
Symbol Parameter
f_IN
Input Frequency
TEST_CLK; NOTE 1
XTAL_IN, XTAL_OUT;
NOTE 1
S_CLOCK
Test Conditions
Minimum Typical Maximum Units
12
27
MHz
12
27
MHz
50
MHz
t_{r_input}
Input Rise Time TEST_CLK
5
ns
NOTE 1: For the input crystal and reference frequency range, the M value must be set for the VCO to operate within the
250MHz to 700MHz range. Using the minimum input frequency of 12MHz, valid values of M are 167 ≤ M ≤ 466.
Using the maximum frequency of 27MHz, valid values of M are 75 ≤ M ≤ 207.
TABLE 6. CRYSTAL CHARACTERISTICS
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance (ESR)
Shunt Capacitance
Drive Level
Test Conditions
Minimum Typical Maximum
Fundamental
12
27
50
7
1
Units
MHz
Ω
pF
mW
TABLE 7. AC CHARACTERISTICS, V_CC = V_CCA = V_CCO = 3.3V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum Typical
F_MAX
tjit(cc)
Output Frequency
Cycle-to-Cycle Jitter; NOTE 1, 3
fOUT > 87.5MHz
fOUT ≤ 87.5MHz
tjit(per) Period Jitter, RMS; NOTE 1
tsk(o) Output Skew; NOTE 2, 3
t_R / t_F
Output Rise/Fall Time
M, N to nP_LOAD
20% to 80%
200
5
t_S
Setup Time S_DATA to S_CLOCK
5
S_CLOCK to S_LOAD
5
M, N to nP_LOAD
5
t_H
Hold Time S_DATA to S_CLOCK
5
S_CLOCK to S_LOAD
5
N ≠ div-by-1
48
odc
Output Duty Cycle
N = div-by-1, fOUT ≤ 400MHz
45
N = div-by-1,
400MHz < fOUT ≤ 630MHz
40
t_LOCK
PLL Lock Time
See Parameter Measurement Information section.
NOTE 1: Jitter performance using XTAL inputs.
NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions.
Measured at the output differential cross points.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
Maximum
700
25
45
9
15
700
52
55
60
1
Units
MHz
ps
ps
ps
ps
ps
ns
ns
ns
ns
ns
ns
%
%
%
ms
8430BY-71
www.icst.com/products/hiperclocks.html
REV. A SEPTEMBER 20, 2005
6