REV. 0

AD8131

–11–

AD8131

24.9

49.9

49.9

49.9

8

2

3

6

5

4

10 F

0.1 F

+

+5V

–5V

10 F

0.1 F

+

100

RECEIVER

1

Figure 38. Single-Ended-to-Differential 100

Ω Line Driver

AD8131

24.9

49.9

110

110

8

2

3

6

0.1 F

10 F

+

3V

LPF

0.1 F

10k

+3V

1

20pF

20pF

AD9203

26

25

28

AVDD

DRVDD

AINP

AINN

AVSS

DRVSS

3V

27

0.1 F

DIGITAL

OUTPUTS

1

2

10k

Figure 39. Test Circuit for AD8131 Driving an AD9203,

10 Bit, 40 Msps A-to-D Converter

FREQUENCY – MHz

10

–40

2.5

2.3

0

–10

–20

–30

–50

2.0 2.1 2.2

2.4

2.6

–60

–110

–70

–80

–90

–100

–120

2.9

2.7 2.8

3.0

Figure 40. FFT Plot for AD8131/AD9203

49.9

8

2

3

6

5

4

10 F

0.1 F

+

+5V

–5V

10 F

0.1 F

+

1

INPUT

–OUT

+OUT

Figure 41. Unity Gain, Single-Ended-to-Differential

Amplifier