Data Sheet

AD822

Rev. J | Page 15 of 24

FREQUENCY (Hz)

–70

–140

300

1M

1k

3k

10k

30k

100k

300k

–80

–100

–110

–120

–130

–90

Figure 28. Crosstalk vs. Frequency

VIN

RL

VOUT

100pF

8

V+

0.01µF

4

0.01µF

1/2

AD822

+

–

Figure 29. Unity-Gain Follower

0%

100

90

10

5V

10µs

Figure 30. 20 V p-p, 25 kHz Sine Wave Input; Unity-Gain Follower; VS = ±15 V,

RL = 600 Ω

V+

20V p-p

2

3

8

5

6

20kΩ

2.2kΩ

5kΩ

5kΩ

VOUT

CROSSTALK = 20 log

VOUT

10VIN

0.1µF

1µF

0.1µF

1µF

V–

VIN

1/2

AD822

1

1/2

AD822

7

Figure 31. Crosstalk Test Circuit

0%

100

90

10

5V

5µs

Figure 32. Large Signal Response Unity-Gain Follower; VS = ±15 V, RL = 10 kΩ

10

0%

100

90

10mV

500ns

Figure 33. Small Signal Response Unity-Gain Follower; VS = ±15 V, RL = 10 kΩ

GND

10

0%

100

90

1V

2µs

Figure 34. VS = 5 V, 0 V; Unity-Gain Follower Response to 0 V to 4 V Step

4

VIN

RL

VOUT

100pF

8

V+

0.01µF

1/2

AD822

+

–

Figure 35. Unity-Gain Follower