
ICS844071AG REVISION B OCTOBER 10, 2012
5
2012 Integrated Device Technology, Inc.
ICS844071 Data Sheet
FEMTOCLOCK CRYSTAL-TO-LVDS CLOCK GENERATOR
AC Electrical Characteristics
Table 5A. AC Characteristics, VDD = 3.3V ± 10%, TA = 0°C to 70°
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. For additional information, refer to the PCI Express Application Note section in the datasheet.
NOTE 1: Refer to the Phase Noise Plot.
Table 5B. AC Characteristics, VDD = 2.5V ± 5%, TA = 0°C to 70°
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. For additional information, refer to the PCI Express Application Note section in the datasheet.
NOTE 1: Refer to the Phase Noise Plot.
Parameter
Symbol
Test Conditions
Minimum
Typical
Maximum
Units
fOUT
Output Frequency
62.5
170
MHz
tjit()
RMS Phase Jitter,
Random; NOTE 1
150MHz,
Integration Range: 900kHz – 7.5MHz
0.45
ps
75MHz,
Integration Range: 900kHz – 7.5MHz
0.46
ps
tR / tF
Output Rise/Fall Time
20% to 80%
150
400
ps
odc
Output Duty Cycle
48
52
%
Parameter
Symbol
Test Conditions
Minimum
Typical
Maximum
Units
fOUT
Output Frequency
62.5
170
MHz
tjit()
RMS Phase Jitter,
Random; NOTE 1
150MHz,
Integration Range: 900kHz – 7.5MHz
0.56
ps
75MHz,
Integration Range: 900kHz – 7.5MHz
0.60
ps
tR / tF
Output Rise/Fall Time
20% to 80%
150
400
ps
odc
Output Duty Cycle
48
52
%