AD8230

Rev. B | Page 7 of 16

–40

–30

–20

–10

0

10

20

30

40

–0.5

0

–1.5

–1.0

0.5

1.0

1.5

Figure 10. Offset Voltage (RTI) vs. Reference Voltage

FREQUENCY (Hz)

60

70

80

90

100

110

120

130

10

100

1k

10k

CMR WITH NO SOURCE IMBALANCE

CMR WITH 1kΩ SOURCE IMBALANCE

40

50

Figure 11. Common-Mode Rejection (CMR) vs. Frequency

SOURCE IMPEDANCE (kΩ)

110

112

114

116

118

120

122

124

126

128

130

46

02

8

10

12

±5V SUPPLY

±8V SUPPLY

Figure 12. Common-Mode Rejection (CMR) vs.

Source Impedance, 1.1 μF Across Input Pins

10

–10

–1000

1000

OUTPUT VOLTAGE (mV)

8

6

4

2

0

–2

–4

–6

–8

–800 –600 –400 –200

0

200

400

600

800

–856mV, +8.2V

0V, +8.4V

+592mV, +8.2V

–812mV, +5V

0V, +5.5V +644mV, +5V

–652mV, –5V

0V, –5.5V

+800mV, –5V

–616mV, –8.2V

0V, –8.4V

+840mV, –8.2V

Figure 13. Input Common-Mode Voltage Range vs. Output Voltage, G = 2

10

–10

–10

10

OUTPUT VOLTAGE (V)

8

6

4

2

0

–2

–4

–6

–8

–8

–6

–4

–2

0

2

4

6

8

–7.9V, +8V

+7.9V, +8V

+4.88V, +5V

–4.9V, +5V

+4.88V, –5V

–4.9V, –5V

–7.9V, –8V

+7.9V, –8V

Figure 14. Input Common-Mode Voltage Range vs. Output Voltage, G = 10

10

–10

–10

10

OUTPUT VOLTAGE (V)

8

6

4

2

0

–2

–4

–6

–8

–8

–6

–4

–2

0

2

4

6

8

+7.9V, +8V

–7.9V, +8V

–4.8V, +5.5V

+4.8V, +5.5V

–4.8V, –5.5V

+4.8V, –5.5V

–7.9V, –8V

+7.9V, –8V

Figure 15. Input Common-Mode Voltage Range vs. Output Voltage, G = 100