AD7779 datasheet(19/97 Pages) AD

19 / 97 page

Data Sheet

AD7779

Rev. 0 | Page 19 of 97

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

–40

105

125

TEMPERATURE (°C)

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

VREF =2.5V

VCM = (AVDD1x + AVSSx) ÷ 2

Figure 20. Noise vs. Temperature at 8 kSPS, High Resolution Mode

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

CLOCK FREQUENCY (Hz)

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

VREF =2.5V

TEMPERATURE = 25°C

DECIMATION = 256

VCM =(AVDD1x +AVSSx) ÷ 2

Figure 21. Noise vs. Clock Frequency, High Resolution Mode, Decimation = 256

100

2000

4000

8000

1600

ODR (Hz)

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

100

120

Figure 22. Noise vs. ODR, High Resolution Mode

–40

105

125

TEMPERATURE (°C)

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

VREF =2.5V

VCM = (AVDD1x + AVSSx) ÷ 2

Figure 23. Noise vs Temperature at 2 kSPS, Low Power Mode

CLOCK FREQUENCY (Hz)

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

VREF =2.5V

TEMPERATURE = 25°C

DECIMATION = 256

VCM =(AVDD1x +AVSSx) ÷ 2

Figure 24. Noise vs. Clock Frequency at 2 kSPS, Low Power Mode,

Decimation = 256

100

150

200

250

300

350

400

500

1000

2000

4000

8000

ODR (Hz)

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

Figure 25. Noise vs. ODR, Low Power Mode

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