FEMTOCLOCKS™ CRYSTAL-TO-LVCMOS/
LVTTL FREQUENCY SYNTHESIZER
840004 DATA SHEET
4 REVISION B 4/1/15
TABLE 5A. AC CHARACTERISTICS, V
DD
= V
DDA
= V
DDO
= 3.3V±5%, TA = 0°C TO 70°C
TABLE 5B. AC CHARACTERISTICS, V
DD
= V
DDA
= 3.3V±5%, V
DDO
= 3.3V±5% OR 2.5V±5%, TA = 0°C TO 70°C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
f
OUT
Output Frequency
F_SEL[1:0] = 00 186.67 212.5 226.66 MHz
F_SEL[1:0] = 01 140 159.375 170 MHz
F_SEL[1:0] = 10 93.33 156.25 113.33 MHz
F_SEL[1:0] = 11 46.67 106.25 56.66 MHz
tsk(o) Output Skew; NOTE 1, 3 60 ps
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 2
212.5MHz (637kHz - 10MHz) 0.49 ps
159.375MHz (637kHz - 10MHz) 0.55 ps
156.25MHz (1.875MHz - 20MHz) 0.56 ps
106.25MHz (637kHz - 10MHz) 0.79 ps
53.125MHz (637kHz - 10MHz) 0.65 ps
t
R
/ t
F
Output Rise/Fall Time 20% to 80% 200 700 ps
odc Output Duty Cycle
F_SEL[1:0] = 00 41 59 %
F_SEL[1:0] = 01 43 57 %
F_SEL[1:0] = 10 or 11 48 52 %
NOTE 1: Defi ned as skew between outputs at the same supply voltages and with equal load conditions.
Measured at V
DDO
/2.
NOTE 2: Please refer to the Phase Noise Plot.
NOTE 3: This parameter is defi ned in accordance with JEDEC Standard 65.
Symbol Parameter Test Conditions Minimum Typical Maximum Units
f
OUT
Output Frequency
F_SEL[1:0] = 00 186.67 212.5 226.66 MHz
F_SEL[1:0] = 01 140 159.375 170 MHz
F_SEL[1:0] = 10 93.33 156.25 113.33 MHz
F_SEL[1:0] = 11 46.67 106.25 56.66 MHz
tsk(o) Output Skew; NOTE 1, 3 60 ps
tjit(Ø)
RMS Phase Jitter (Random);
NOTE 2
212.5MHz (637kHz - 10MHz) 0.46 ps
159.375MHz (637kHz - 10MHz) 0.54 ps
156.25MHz (1.875MHz - 20MHz) 0.57 ps
106.25MHz (637kHz - 10MHz) 0.73 ps
53.125MHz (637kHz - 10MHz) 0.63 ps
t
R
/ t
F
Output Rise/Fall Time 20% to 80% 200 700 ps
odc Output Duty Cycle
F_SEL[1:0] = 00 42 58 %
F_SEL[1:0] = 01 44 56 %
F_SEL[1:0] = 10 or 11 48 52 %
NOTE 1: Defi ned as skew between outputs at the same supply voltages and with equal load conditions.
Measured at V
DDO
/2.
NOTE 2: Please refer to the Phase Noise Plot.
NOTE 3: This parameter is defi ned in accordance with JEDEC Standard 65.
