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Typical performance characteristics, E typical performance characteristics s, Ad9912 – Analog Devices AD9912 User Manual

Page 10

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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)