AD8488

Data Sheet

Rev. A | Page 12 of 20

0

0.12

CHANNEL NUMBER

100

90

80

70

60

50

10

40

30

20

130

120

110

0.10

0.08

0.06

0.04

0.02

0

–0.02

–0.04

–0.06

–0.08

–0.10

–0.12

G = 5V/V

CF1 = 0.9pF

TCASE = 30°C

FSEL = 160k

VIN = 0 TO –4.16mV

Figure 10. Adjacent Channel Crosstalk as Measured by the Percent of Output

Step for Each Channel

0

100

90

80

70

60

50

10

40

30

20

130

120

110

1

0

2

3

4

5

–5

CHANNEL NUMBER

–1

–2

–3

–4

G = 10V/V

CF1 = 0.9pF

TCASE = 30°C

CPANEL = 38pF

Figure 11. Input Leakage vs. Channel

2

0

–2

0

4

6

8

10

CHANNEL NUMBER

100

90

80

70

60

50

10

40

30

20

130

120

110

–10

–8

–6

–4

CF1 = 0.45pF

CF1 = 7.0pF

CF1 = 3.5pF

CF1 = 0.9pF

G = 1V/V

TCASE = 30°C

CPANEL = 38pF

VIN = 0V

Figure 12. Differential Offset Voltage vs. Channel for Four Values of CF1

0

0.10

CHANNEL NUMBER

100

90

80

70

60

50

10

40

30

20

130

120

110

0.08

0.06

0.04

0.02

0

–0.02

–0.04

–0.06

–0.08

–0.10

G = 5V/V

CF1 = 0.9pF

TCASE = 30°C

FSEL = 160k

VIN = 0 TO –4.16mV

Figure 13. Crosstalk from All Nonadjacent Channels as Measured by the

Percent of Output Step for Each Channel

180

0

140

160

200

220

240

260

TCASE (°C)

320

300

280

60

50

10

40

30

20

340

60

80

100

120

IAVDD

NORMAL POWER

LOW POWER

65

Figure 14. Supply Current vs. Temperature (TCASE)

0

TEMPERATURE (°C)

60

50

10

40

30

20

–5.5

G = 10V/V

CF1 = 7 pF

TCASE = 30°C

CPANEL = 38pF

VIN = 0V

–5.6

–5.7

–5.8

–5.9

–6.0

–6.1

–6.2

–6.3

–6.4

–6.5

Figure 15. Differential Offset Voltage vs. Temperature