844003 Datasheet, PDF (8/18 Pages) Integrated Device Technology – FemtoClock Crystal-to-3.3V LVDS Frequency Synthesizer

844003 Datasheet
AC Electrical Characteristics
Table 6. AC Characteristics, V_DD = V_{DDO_A} = V_{DDO_B} = 3.3V ± 5%, T_A = 0°C to 70°C
Symbol Parameter
Test Conditions
Minimum
Output Divider = ÷1
560
Typical
Maximum
700
Units
MHz
f_OUT
Output Frequency Range
Output Divider = ÷2
280
Output Divider = ÷4
140
350
MHz
175
MHz
Output Divider = ÷5
112
140
MHz
tsk(b)
Bank Skew, NOTE 1
3
ps
Outputs @ Same Frequency
15
ps
tsk(o)
Output Skew, NOTE 2, 4
Outputs @ Different
Frequencies
30
ps
625MHz (1.875MHz - 20MHz)
0.55
ps
312.5MHz (1.875MHz - 20MHz)
0.59
ps
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 3
156.25MHz (1.875MHz -
20MHz)
0.63
ps
125MHz (1.875MHz - 20MHz)
0.64
ps
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
325
ps
50
%
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 1: Defined as skew within a bank of outputs at the same voltages and with equal load conditions.
NOTE 2: Defined as skew between outputs at the same supply voltages and with equal load conditions. Measured at the output 
differential crosspoints.
NOTE 3: Please refer to the Phase Noise Plot.
NOTE 4: This parameter is defined in accordance with JEDEC Standard 65.
©2016 Integrated Device Technology, Inc.
8
January 29, 2016