AD9709AST datasheet(7/27 Pages) AD

Part #	AD9709AST

Description	8-Bit, 125 MSPS Dual TxDAC D/A Converter

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Manufacturer	AD [Analog Devices]

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REV. 0

AD9709

–7–

Typical Characterization Curves

(AVDD = 5 V, DVDD = 3.3 V, IOUTFS = 20 mA, 50

Doubly Terminated Load, Differential Output, TA = 25 C, SFDR up to Nyquist, unless

otherwise noted)

75

70

60

65

45

1

10

100

fOUT – MHz

0.1

50

55

fCLK = 5MSPS

fCLK = 65MSPS

fCLK = 125MSPS

fCLK = 25MSPS

Figure 3. SFDR vs. fOUT @ 0 dBFS

–12dBFS

fOUT – MHz

45

05

25

10

15

20

70

65

60

55

50

30

35

0dBFS

–6dBFS

75

Figure 6. SFDR vs. fOUT @ 65 MSPS

AOUT – dBFS

2

5MSPS /0.46MHz

–25

–19

–7

65

40

50

45

55

60

–16

70

–22

–13 –10

–4

–1

75

10MSPS/0.91MHz

25MSPS/2.27MHz

65MSPS/5.91MHz

125MSPS/11.37MHz

Figure 9. Single-Tone SFDR vs. AOUT

@ fOUT = fCLOCK/11

0

2.5

0.5

1

1.5

2

70

55

50

45

0 dBFS

–6 dBFS

–12 dBFS

75

fOUT – MHz

65

60

Figure 4. SFDR vs. fOUT @ 5 MSPS

fOUT – MHz

45

0

10

50

20

30

40

75

70

65

55

50

60

70

0dBFS

–6dBFS

–12dBFS

Figure 7. SFDR vs. fOUT @ 125 MSPS

AOUT – dBFS

45

0

–20

–15

–5

65

50

55

40

60

70

–10

5MSPS/1.0MHz

75

–25

10MSPS/2.0MHz

25MSPS/5.0MHz

65MSPS/13.0MHz

125MSPS/5.0MHz

Figure 10. Single-Tone SFDR vs. AOUT

@ fOUT = fCLOCK/5

fOUT – MHz

0

212

4

6

8

10

65

60

55

45

50

0dBFS

–6dBFS

–12dBFS

70

75

Figure 5. SFDR vs. fOUT @ 25 MSPS

fOUT – MHz

50

0

10

20

30

75

70

60

55

65

515

25

IOUTFS = 5mA

IOUTFS = 10mA

IOUTFS = 20mA

45

35

Figure 8. SFDR vs. fOUT and IOUTFS

@ 65 MSPS and 0 dBFS

AOUT – dBFS

75

0

–20

–10

–5

55

40

50

60

–15

45

3.3/3.4MHz

@25MSPS

8.8/9.8MHz

@65MSPS

–25

65

70

0.965/1.035MHz

@7MSPS

16.9/18.1Mz

@125MSPS

Figure 11. Dual-Tone SFDR vs. AOUT

@ fOUT = fCLOCK/7

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