AD7771BCPZ datasheet(24/99 Pages) AD

24 / 99 page

Data Sheet

AD7771

Rev. 0 | Page 23 of 98

–100

–140

INPUT VOLTAGE (V)

–135

–130

–125

–120

–115

–110

–105

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

TA = 25°C

VREF = 2.5V

INPUT FREQUENCY = 50Hz

Figure 44. THD vs. Input Voltage at 64 kSPS, High Resolution Mode

–125

REFERENCE VOLTAGE (V)

–90

–120

–105

–95

–110

–115

–100

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

TA = 25°C

±VREF

INPUT FREQUENCY = 50Hz

Figure 45. THD vs. Reference Voltage at 64 kSPS, High Resolution Mode

–100

–118

MCLK FREQUENCY (Hz)

–116

–114

–112

–110

–108

–106

–104

–102

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

TA = 25°C

VREF = 2.5V

INPUT FREQUENCY = 50Hz

Figure 46. THD vs. Master Clock Frequency, High Resolution Mode

–100

–140

INPUT VOLTAGE (V)

–135

–130

–125

–120

–115

–110

–105

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

TA = 25°C

VREF = 2.5V

INPUT FREQUENCY = 50Hz

Figure 47. THD vs. Input Voltage at 16 kSPS, Low Power Mode

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

TA = 25°C

±VREF

INPUT FREQUENCY = 50Hz

–125

REFERENCE VOLTAGE (V)

–90

–120

–105

–95

–110

–115

–100

Figure 48. THD vs. Reference Voltage at 16 kSPS, Low Power Mode

–100

–105

–110

–115

–120

–125

MCLK FREQUENCY (Hz)

GAIN = 1

GAIN = 2

GAIN = 4

GAIN = 8

TA = 25°C

VREF = 2.5V

INPUT FREQUENCY = 50Hz

Figure 49. THD vs. Master Clock Frequency, Low Power Mode

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