ICS8430I-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
ICS8430BI-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 = -40°C TO 85°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
=
-40°C
TO
85°C
Symbol Parameter
Test Conditions Minimum Typical Maximum
F_MAX
Output Frequency
700
fOUT > 87.5MHz
25
tjit(cc) Cycle-to-Cycle Jitter; NOTE 1, 3
fOUT < 87.5MHz
40
tjit(per) Period Jitter, RMS; NOTE 1
9.5
tsk(o) Output Skew; NOTE 2, 3
15
t_R / t_F
Output Rise/Fall Time
20% to 80%
200
700
M, N to nP_LOAD
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
odc
Output Duty Cycle
N≠1
48
52
N=1
45
55
t_LOCK
PLL Lock Time
1
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.
Units
MHz
ps
ps
ps
ps
ps
ns
ns
ns
ns
ns
ns
%
%
ms
8430BYI-71
www.icst.com/products/hiperclocks.html
6
REV. A FEBRUARY 17, 2006