AD9912
Rev. D | Page 10 of 40
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD, AVDD3, and DVDD at nominal supply voltage; DAC R
SET
= 10 kΩ, unless otherwise noted. See Figure 26 for 1 GHz reference
phase noise used for generating these plots.
06763-
003
0
100
200
300
400
500
OUTPUT FREQUENCY (MHz)
–50
–55
–60
–65
–70
–75
–80
S
F
DR (
d
Bc)
+25°C
–40°C
+85°C
Figure 3. Wideband SFDR vs. Output Frequency at −40°C, +25°C, and +85°C,
SYSCLK = 1 GHz (SYSCLK PLL Bypassed)
06763-
004
0
100
200
300
400
500
OUTPUT FREQUENCY (MHz)
–50
–55
–60
–65
–70
–75
–80
S
F
DR (
d
Bc)
HIGH V
DD
NORMAL V
DD
LOW V
DD
Figure 4. Variation of Wideband SFDR vs. Frequency over DAC Power Supply
Voltage, SYSCLK = 1 GHz (SYSCLK PLL Bypassed)
06763-
005
0
100
200
300
400
500
FREQUENCY (MHz)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
S
IG
NAL
P
O
W
E
R (
d
Bm)
20.1MHz
–79dBc
500MHz
3kHz
10kHz
CARRIER:
SFDR:
FREQ. SPAN:
RESOLUTION BW:
VIDEO BW:
Figure 5. Wideband SFDR at 20.1 MHz,
SYSCLK = 1 GHz (SYSCLK PLL Bypassed)
06763-
006
0
100
200
300
400
500
FREQUENCY (MHz)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
S
IG
NAL
P
O
W
E
R (
d
Bm)
98.6MHz
–67dBc
500MHz
3kHz
10kHz
CARRIER:
SFDR:
FREQ. SPAN:
RESOLUTION BW:
VIDEO BW:
Figure 6. Wideband SFDR at 98.6 MHz,
SYSCLK = 1 GHz (SYSCLK PLL Bypassed)
06763-
007
0
100
200
300
400
500
FREQUENCY (MHz)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
S
IG
NAL
P
O
W
E
R (
d
Bm)
201.1MHz
–61dBc
500MHz
3kHz
10kHz
CARRIER:
SFDR:
FREQ. SPAN:
RESOLUTION BW:
VIDEO BW:
Figure 7. Wideband SFDR at 201.1 MHz,
SYSCLK = 1 GHz (SYSCLK PLL Bypassed)
06763-
008
0
100
200
300
400
500
FREQUENCY (MHz)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
S
IG
NAL
P
O
W
E
R (
d
Bm)
398.7MHz
–59dBc
500MHz
3kHz
10kHz
CARRIER:
SFDR:
FREQ. SPAN:
RESOLUTION BW:
VIDEO BW:
Figure 8. Wideband SFDR at 398.7 MHz,
SYSCLK = 1 GHz (SYSCLK PLL Bypassed)
