AD7779 datasheet(26/97 Pages) AD

26 / 97 page

AD7779

Data Sheet

Rev. 0 | Page 26 of 97

TEMPERATURE (°C)

CH 7

CH 6

CH 5

CH 4

CH 3

CH 2

CH 1

CH 0

VREF =2.5V

VIN =2.5V

AVDD1x = 3.3V

Figure 62. Differential Input Current vs. Temperature, High Resolution Mode

–170

–160

–150

–140

–130

–120

–110

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

INPUT FREQUENCY (Hz)

GAIN 1

GAIN 2

GAIN 4

GAIN 8

AVDD1x = 3.3V

VCM = 1.65V + 100mV p-p

Figure 63. CMRR vs. Input Frequency at 8 kSPS, High Resolution Mode,

AVDD1x = 3.3 V, VCM = 1.65 V + 100 mV p-p

–180

–160

–140

–120

–100

–80

–60

–40

–20

GAIN 1

GAIN 2

GAIN 4

GAIN 8

INPUT FREQUENCY (Hz)

TEMPERATURE = 25°C

AVDD1x = 3.3V + 100mV p-p

Figure 64. AC PSRR vs. Input Frequency at 8 kSPS, High Resolution Mode,

AVDD1x = 3.3 V + 100 mV p-p

TEMPERATURE (°C)

CH 7

CH 6

CH 5

CH 4

CH 3

CH 2

CH 1

CH 0

VREF =2.5V

VIN =2.5V

AVDD1x = 3.3V

Figure 65. Differential Input Current vs. Temperature, Low Power Mode

–170

–160

–150

–140

–130

–120

–110

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

INPUT FREQUENCY (Hz)

GAIN 1

GAIN 2

GAIN 4

GAIN 8

AVDD1x = 3.3V

VCM = 1.65V + 100mV p-p

Figure 66. CMRR vs. Input Frequency at 2 kSPS, Low Power Mode,

AVDD1x = 3.3 V, VCM = 1.65 V + 100 mV p-p

INPUT FREQUENCY (Hz)

–180

–160

–140

–120

–100

–80

–60

–40

–20

TEMPERATURE = 25°C

AVDD1x = 3.3V + 100mV p-p

GAIN 1

GAIN 2

GAIN 4

GAIN 8

VCM = 1.65V + 100mV p-p

Figure 67. AC PSRR vs. Input Frequency at 2 kSPS, Low Power Mode,

AVDD1x = 3.3 V + 100 mV p-p

AD7779 Datasheet(PDF) 26 Page - Analog Devices

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