AD7779 datasheet(25/97 Pages) AD

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Data Sheet

AD7779

Rev. 0 | Page 25 of 97

–2.5

–2.0

–1.5

–1.0

–0.5

0.5

1.0

1.5

–2.5 –2.0 –1.5 –1.0 –0.5

0.5

1.0

1.5

2.0

2.5

DIFFERENTIAL INPUT VOLTAGE ((AINx+) – (AINx–))

AINx+ VCM = 1.95V

AINx– VCM = 1.95V

AINx+ VCM = 1.35V

AINx– VCM = 1.35V

VREF = 2.5V

VIN = 2.5V

AVDD1 = 3.3V

Figure 56. Input Current vs. Differential Input Voltage, High Resolution Mode

–6

–5

–4

–3

–2

–1

TEMPERATURE (°C)

VREF =2.5V

VIN =2.5V

AVDD1x = 3.3V

AIN0+

AIN0–

AIN2+

AIN2–

Figure 57. Absolute Input Current vs. Temperature, High Resolution Mode

–2.5 –2.0 –1.5 –1.0

–0.5

0.5

1.0

1.5

2.5

2.0

DIFFERENTIAL INPUT VOLTAGE ((AINx+) – (AINx–))

–2.0

–1.5

–1.0

–0.5

0.5

1.0

1.5

2.0

AINx+ – AINx– VCM = 1.95V

AINx+ – AINx– VCM = 1.35V

VREF =2.5V

VIN =2.5V

AVDD1x = 3.3V

Figure 58. Differential Input Current vs. Differential Input Voltage,

High Resolution Mode

–0.4

–0.3

–0.2

–0.1

0.1

0.2

0.3

0.4

0.5

0.6

– 2.5 –2.0–1.5–1.0–0.5

0.5

1.5

2.5

VREF =2.5V

VIN =2.5V

AVDD1x = 3.3V

DIFFERENTIAL INPUT VOLTAGE ((AINx+) – (AINx–))

AINx+ VCM = 1.95V

AINx– VCM = 1.95V

AINx+ VCM = 1.35V

AINx– VCM = 1.35V

Figure 59. Input Current vs. Differential Input Voltage, Low Power Mode

–6

–5

–4

–3

–2

–1

TEMPERATURE (°C)

VREF =2.5V

VIN =2.5V

AVDD1x = 3.3V

AIN0+

AIN0–

AIN2+

AIN2–

Figure 60. Absolute Input Current vs. Temperature, Low Power Mode

–0.5

–0.4

–0.3

–0.2

–0.1

0.1

0.2

0.3

0.4

0.5

–2.5 –2.0 –1.5 –1.0

–0.5

0.5

1.0

1.5

2.5

2.0

DIFFERENTIAL INPUT VOLTAGE ((AINx+) – (AINx–))

AINx+ – AINx– VCM = 1.95V

AINx+ – AINx– VCM = 1.35V

Figure 61. Differential Input Current vs. Differential Input Voltage,

Low Power Mode

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