AD9850–Typical Performance Characteristics
CH1 S
Spectrum
AD9850
10dB/REF
–8.6dBm
76.642 dB
Fxd
CH1 S
Spectrum
AD9850
10dB/REF
–10dBm
59.925 dB
Fxd
CLOCK 125MHz
CLOCK 125MHz
0
0
RBW # 100Hz
START 0Hz
VBW 100Hz
ATN # 30dB SWP 762 sec
STOP 62.5MHz
RBW # 300Hz
START 0Hz
VBW 300Hz
ATN # 30dB SWP 182.6 sec
STOP 62.5MHz
Figure 1. SFDR, CLKIN = 125 MHz/f
OUT
= 1 MHz
Figure 4. SFDR, CLKIN = 125 MHz/f
OUT
= 20 MHz
CH1 S
Spectrum
AD9850
10dB/REF
–10dBm
54.818 dB
Fxd
CH1 S
Spectrum
AD9850
12dB/REF
0dBm
–85.401 dB
–23 kHz
Mkr
CLOCK 125MHz
0
0
RBW # 300Hz
START 0Hz
VBW 300Hz
ATN # 30dB
SWP 182.6 sec
STOP 62.5MHz
RBW # 3Hz
VBW 3Hz
CENTER 4.513579MHz
ATN # 20dB
SWP 399.5 sec
SPAN 400kHz
Figure 2. SFDR, CLKIN = 125 MHz/f
OUT
= 41 MHz
Figure 5. SFDR, CLKIN = 20.5 MHz/f
OUT
= 4.5 MHz
Tek Run: 100GS/s ET Sample
–105
PN.3RD
: 300ps
@: 25.26ns
–110
–115
–120
–125
dBc
–130
–135
–140
–145
1
–150
–155
100
10k
1k
OFFSET FROM 5MHz CARRIER – Hz
100k
Ch 1
500mV
M 20.0ns
D 500ps
Ch 1
1.58V
Runs After
Figure 3. Typical Comparator Output Jitter, AD9850
Configured as Clock Generator w/42 MHz LP Filter
(40 MHz A
OUT
/125 MHz CLKIN)
Figure 6. Output Residual Phase Noise (5 MHz A
OUT
/
125 MHz CLKIN)
–6–
REV. E
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