AD8231_16 datasheet(11/25 Pages) AD

Nome de Peças	AD8231

Descrição Electrónicos	Zero Drift, Digitally Programmable Instrumentation Amplifier

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Fabricante Electrônico	AD [Analog Devices]

Página de início	http://www.analog.com

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AD8231

Data Sheet

2000

1500

1000

500

0

–500

–40

–20

0

20

3V

5V

40

60

80

100

120

TEMPERATURE (°C)

VREF = MIDSUPPLY

VCM = MIDSUPPLY

Figure 9. Instrumentation Amplifier Bias Current vs. Temperature

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

–2.5

2.5

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

VCM (V)

+VS = +2.5V

–VS = –2.5V

VREF = 0V

Figure 10. Instrumentation Amplifier Bias Current vs.

Common-Mode Voltage, 5 V

1.0

–1.0

–0.8

–0.6

–0.4

–0.2

0

0.2

0.4

0.6

0.8

–1.5

1.5

1.2

0.9

0.6

0.3

0

–0.3

–0.6

–0.9

–1.2

VCM (V)

+VS = +1.5V

–VS = –1.5V

VREF = 0V

Figure 11. Instrumentation Amplifier Bias Current vs.

Common-Mode Voltage, 3 V

6

0V, 4.96V

0V, 2.96V

0V, 0.04V

2.92V, 1.5V

4.92V, 2.5V

5V SINGLE SUPPLY

3V SINGLE SUPPLY

5

4

3

2

1

0

6

5

4

3

2

1

OUTPUT VOLTAGE (V)

Figure 12. Instrumentation Amplifier Input Common-Mode Range vs.

Output Voltage, All Gains, VREF = 0 V

6

5

4

3

2

1

0

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

OUTPUT VOLTAGE (V)

5V SINGLE SUPPLY

3V SINGLE SUPPLY

0.02V, 2.22V

0.02V, 0.78V

1.5V, 4.96V

0.02V, 4.22V

4.98V, 3.22V

4.98V, 1.78V

1.5V, 2.96V

2.98V, 2.22V

2.98V, 0.78V

1.5V, 0.04V

Figure 13. Instrumentation Amplifier Input Common-Mode Range vs.

Output Voltage, All Gains, VREF = 1.5 V

6

5

4

3

2

1

0

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

OUTPUT VOLTAGE (V)

5V SINGLE SUPPLY

3V SINGLE

SUPPLY

0.02V, 1.72V

2.5V, 4.96V

0.02V, 3.72V

4.98V, 3.72V

4.98V,1.28V

2.5V, 2.96V

2.98V, 2.72V

2.98V, 0.28V

2.5V, 0.04V

0.02V, 1.28V

Figure 14. Instrumentation Amplifier Input Common-Mode Range vs.

Output Voltage, All Gains, VREF = 2.5 V

Rev. C | Page 10 of 24

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