Data Sheet HMC1031
Rev. C | Page 7 of 13
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, VCC = 3.3 V, unless otherwise specified.
Figure 8. 10 MHz to 100 MHz with Noisy Reference Phase Noise;
Loop Filter Value: C8 = 4.7 nF, R7 = 1.2 kΩ, C9 = 62 μF, Loop Filter BW = 8 Hz,
VCXO = 100 MHz Crystek CVHD-950
Figure 9. 10 MHz to 100 MHz with Very Noisy Reference Phase Noise;
Loop Filter Value: C8 = 4.7 nF, R7 = 1.2 kΩ, C9 = 62 μF; Loop Filter BW = 8 Hz;
VCXO = 100 MHz Crystek CVHD-950
Figure 10. Phase Error During Lock Time for Divide by 5; 10 MHz Input;
50 MHz Output; Loop BW = 100 Hz; Refer to Loop Filter Configuration 2 in Table 5
Figure 11. 10 MHz to 50 MHz with Noisy Reference Phase Noise;
Loop Filter Value: C8 = 220 nF, R7 = 3.3 kΩ, C9 = 2.2 μF, Loop Filter BW =
50 Hz, VCXO = Bliley V105ACACB, 50 MHz
Figure 12. Typical Closed-Loop Phase Noise, HMC1031 as Jitter Attenuator,
Loop BW = 100 Hz; Refer to Loop Filter Configuration 2 in Table 5
Figure 13. Frequency Error During Lock Time for Divide by 5; 10 MHz Input;
50 MHz Output; Loop Bandwidth = 100 Hz; Refer to Loop Filter Configuration 2
in Table 5
40
–180
–160
–140
–100
–60
–120
–80
10 100 1k 10k 100k 1M
PHASE NOISE (dBc/Hz)
OFFSET (Hz)
100MHz VCXO LOCKED WITH TINY PLL
10MHz NOISY REFERENCE
12kHz TO 20MHz INTEGRATED JITTER
HMC1031/VCXO: 55fs
10MHz INPUT: 4ps
13353-009
20
–180
–140
–160
–120
–80
–40
–100
–60
1 10 100 1k 100k10k 1M
PHASE NOISE (dBc/Hz)
OFFSET (Hz)
OPEN-LOOP VCXO PHASE NOISE
10MHz VERY NOISY REFERENCE
100MHz VCXO LOCKED WITH TINY PLL
12kHz TO 20MHz INTEGRATED JITTER
HMC1031/VCXO: 57.8fs
10MHz INPUT: 16.2ps
13353-010
200
100
0
–100
–200
0 1020304050607080
PHASE ERROR (Degrees)
TIME (ms)
13353-011
20
–180
–140
–160
–120
–80
–40
–100
–60
10 100 1k 10k 100k 1M
PHASE NOISE (dBc/Hz)
OFFSET (Hz)
50MHz VCXO LOCKED WITH TINY PLL
10MHz NOISY REFERENCE
OPEN LOOP VCXO PHASE NOISE
12kHz TO 20MHz INTEGRATED JITTER
HMC1031/VCXO: 190fs
10MHz INPUT: 4ps
13353-012
20
–180
–140
–80
–40
–100
–160
–120
–60
110010k1M10 1k 100k 10M 100M
PHASE NOISE (dBc/Hz)
OFFSET (Hz)
SIM MODEL
SIM VCXO RESPONSE
SIM PLL CONTRIBUTION
SIM REFERENCE RESPONSE
TOTAL MEASURED PHASE NOISE
FREE RUNNING BLILEY 50MHz
10MHz NOISY REFERENCE
12kHz TO 20MHz INTEGRATED JITTER
HMC1031/VCXO: 212fs
13353-013
1000
500
0
–500
–1000
–1500
–2000
0 1020304050607080
FREQUENCY ERROR (Hz)
TIME (ms)
13353-014
