AD605

Rev. E | Page 8 of 20

VGN (V)

2.0

1.0

1.5

0.5

0

–0.5

–1.0

–1.5

–2.0

0.2

0.7

1.7

1.2

2.2

2.7

20dB/V

30dB/V

Figure 9. Gain Error vs. VGN for Two Gain Scale Values

DELTA GAIN (dB)

20

6

0

–0.8

–0.6

–0.4

–0.2

0

0.2

0.4

0.6

0.8

18

8

4

2

16

12

14

10

∆G(dB) = G(CH1) – G(CH2)

N = 50

Figure 10. Gain Match, VGN1 = VGN2 = 1.0 V

DELTA GAIN (dB)

20

6

0

–0.8

–0.6

–0.4

–0.2

0

0.2

0.4

0.6

0.8

18

8

4

2

16

12

14

10

∆G(dB) = G(CH1) – G(CH2)

N = 50

Figure 11. Gain Match, VGN1 = VGN2 = 2.50 V

FREQUENCY (Hz)

60

40

–60

0

–20

–40

20

VGN = 2.9V (FBK = OPEN)

VGN = 2.9V (FBK = SHORT)

VGN = 1.5V (FBK = OPEN)

VGN = 1.5V (FBK = SHORT)

VGN = 0.1V (FBK = OPEN)

VGN = 0.1V (FBK = SHORT)

VGN = 0.0V

100k

1M

10M

100M

Figure 12. AC Response for Three Values of VGN

VGN (V)

2.525

2.475

0

2.520

2.495

2.490

2.485

2.480

2.515

2.510

2.500

2.505

–40°C

+25°C

+85°C

0.5

1.0

1.5

2.0

2.5

3.0

Figure 13. Output Offset vs. VGN at Three Temperatures

VGN (V)

130

90

125

110

105

100

95

120

115

0

0.5

1.0

1.5

2.0

2.5

3.0

+85°C

+25°C

–40°C

Figure 14. Output Referred Noise vs. VGN at Three Temperatures