ICS840N202I Datasheet, PDF (16/31 Pages) Integrated Device Technology – Fourth generation FemtoClock

ICS840N202I Data Sheet
FemtoClock® NG Universal Frequency Translator
AC Electrical Characteristics
Table 8. AC Characteristics, V_DD = V_DDO = 3.3V±5% or 2.5V±5%, or V_DD = 3.3V±5%, V_DDO = 2.5V±5%, T_A = -40°C to 85°C
Symbol Parameter
Test Conditions
Minimum
Typical
Maximum Units
f_OUT
Output Frequency
0.98
250
MHz
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 1
LBW Mode, 40MHz XTAL,
f_IN = 25MHz, f_OUT = 125MHz,
Integration Range:
12kHz – 20MHz
616
865
fs
tjit(cc)
Cycle-to-Cycle Jitter;
NOTE 2, 3
Frequency Synthesizer Mode
Frequency Translator Mode
35
ps
40
ps
tjit(per) RMS Period Jitter; NOTE 3
1.4
4.5
ps
tsk(o) Output Skew; NOTE 2
50
ps
t_R / t_F
Output Rise/Fall
Time; NOTE 3
Q0, Q1
20% to 80%
100
750
ps
Q0, Q1
f_OUT  125MHz
45
odc
Output Duty Cycle:
NOTE 3
Q0, Q1
125MHz < f_OUT  200MHz
40
Q0, Q1
f_OUT > 200MHz
37
55
%
60
%
63
%
t_SET
Output Re-configuration
Settling Time
from falling edge of the 8th SCLK for
a register change
200
ns
from edge on CONFIG pin
10
ns
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium
has been reached under these conditions.
NOTE: Above AC characteristics are measured with crystal C_L = 12pF.
NOTE 1: RMS phase jitter measured with crystal C_L = 12pF.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Measurements are collected with the following output frequencies: 15MHz, 38.88MHz, 50MHz, 68.88MHz, 125MHz, 132.61MHz,
156.25MHz, 161.1328125MHz, 200MHz, 233.33MHz, 250MHz.
ICS840N202CKI REVISION A NOVEMBER 1, 2013
16
©2013 Integrated Device Technology, Inc.