AD7779 datasheet(23/97 Pages) AD

номер детали	AD7779

подробное описание детали	8-Channel, 24-Bit, Simultaneous Sampling ADC

PDF	97 Pages

Scroll/Zoom	100%

производитель	AD [Analog Devices]

домашняя страница	http://www.analog.com

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23 / 97 page

Data Sheet

AD7779

Rev. 0 | Page 23 of 97

–40

–35

–30

–25

–20

–15

–10

–5

3.0

3.3

3.6

SUPPLY SETTING

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

VREF =2.5V

VIN =0V

TEMPERATURE = 25°C

Figure 44. Offset Error vs. Supply Setting, High Resolution Mode

TEMPERATURE (°C)

–40

–30

–20

–10

CH 0

CH 1

CH 2

CH 3

CH 4

CH 5

CH 6

CH 7

AVDD1x = 3.3V

Figure 45. Offset Drift vs. Temperature, AVDD1x = 3.3 V

–0.043

–0.035

–0.026

–0.017

–0.008

0.008

0.017

3.0

3.3

3.6

AVDD1x SUPPLY (V)

TEMPERATURE = 25°C

GAIN = 1

CH 0

CH 1

CH 2

CH 3

CH 4

CH 5

CH 6

CH 7

Figure 46. Gain Error vs. AVDD1x Supply, High Resolution Mode

–40

–35

–45

–30

–25

–20

–15

–10

–5

3.0

3.3

3.6

SUPPLY SETTING

TEMPERATURE = 25°C

VIN = 0V

VREF = 2.5V

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

Figure 47. Offset Error vs. Supply Setting, Low Power Mode

–15

–10

–5

500

1000

TIME (Hours)

Figure 48. Gain Error Drift vs. Time

3.0

3.3

3.6

AVDD1x SUPPLY (V)

TEMPERATURE = 25°C

GAIN = 1

CH 0

CH 1

CH 2

CH 3

CH 4

CH 5

CH 6

CH 7

–0.043

–0.035

–0.026

–0.017

–0.008

0.008

0.017

Figure 49. Gain Error vs. AVDD1x Supply, Low Power Mode

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