AD8391 데이터 시트보기 (PDF) - Analog Devices

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AD8391

xDSL Line Driver 3 V to 12 V with Power-Down

Analog Devices 

AD8391

RG

RF

VIN+

VMID

CMID

RG

RF

VIN–

VOUT–

RL

VOUT+

TPC 19. Differential Output Test Setup

–30

VS = ؎6V

–40 RL = 21⍀

G = –5, (RG = 178⍀)

–50

–60 HD2 (FO = 500kHz)

–70

HD3 (FO = 500kHz)

–80

–90

HD2 (FO = 100kHz)

–100

HD3 (FO = 100kHz)

–110

2

6

10

14

18

22

OUTPUT VOLTAGE – V p-p

TPC 20. Differential Distortion vs. Output Voltage

–25

VS = ؎6V

RLINE = 100⍀

–35

–45

13dBm

13.5dBm 14dBm

–55

–65

–75

12.5dBm 12dBm

–85

1.7

1.8

1.9

2.0

2.1

2.2

2.3

TRANSFORMER TURNS RATIO

TPC 21. MTPR vs. Transformer Turns Ratio

–30

RL = 21⍀

–40 FOR VS = ؎6V, VOUT = 8V p-p

FOR VS = ؎1.5V, VOUT = 2V p-p

–50 G = –5

–60

HD2 @VS = ؎1.5V

–70

HD2 @ VS = ؎6V

–80

–90

–100

–110

0.01

HD3 @VS = ؎1.5V

HD3 @VS = ؎6V

0.1

1

10

FREQUENCY – MHz

TPC 22. Differential Distortion vs. Frequency

–30

VS = ؎1.5V

–40 RL = 21⍀

G = –5, (RG = 178⍀)

–50

–60 HD2 (FO = 500kHz)

–70

HD3 (FO = 500kHz)

–80

–90

HD2 (FO = 100kHz)

–100

HD3 (FO = 100kHz)

–110

0

1

2

3

4

5

6

OUTPUT VOLTAGE – V p-p

TPC 23. Differential Distortion vs. Output Voltage

–50

VS = ؎6V

RLINE = 100⍀

–55

–60

13dBm

–65

13.5dBm 14dBm

–70

–75

12.5dBm 12dBm

–80

1.7

1.8

1.9

2.0

2.1

2.2

2.3

TRANSFORMER TURNS RATIO

TPC 24. SFDR vs. Transformer Turns Ratio

–8–

REV. A

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