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AD7771BCPZ Datasheet(PDF) 23 Page - Analog Devices

Part # AD7771BCPZ
Description  8-Channel, 24-Bit, Simultaneous Sampling ADC
PDF  99 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7771BCPZ Datasheet(HTML) 23 Page - Analog Devices

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AD7771
Data Sheet
Rev. 0 | Page 22 of 98
FREQUENCY (Hz)
10
–180
–170
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
TA = 25°C
VREF = 2.5V
VCM = (AVDD1x + AVSSx) ÷ 2
ODR = 128kSPS
INPUT FREQUENCY = 1kHz
0
Figure 38. FFT Plot, High Resolution Mode at 128 kSPS,
Input Frequency (fIN) = 1 kHz, Sinc5 Filter Enabled
–100
–105
–110
–115
–120
–125
–130
INPUT FREQUENCY (Hz)
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
TA = 25°C
GAIN = 1
VREF = 2.5V
VCM = (AVDD1x + AVSSx) ÷ 2
VIN = –0.5dBFS
Figure 39. THD vs. Input Frequency at 64 kSPS, High Resolution Mode,
Sinc5 Filter Enabled
–100
–135
INPUT FREQUENCY (Hz)
–130
–125
–120
–115
–110
–105
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
TA = 25°C
VREF = 2.5V
VIN = –0.5dBFS
Figure 40. THD vs. Input Frequency at 16 kSPS, High Resolution Mode,
Sinc3 Filter Enabled
10
–180
FREQUENCY (Hz)
–170
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
TA = 25°C
VREF = 2.5V
VCM = (AVDD1x + AVSSx) ÷ 2
ODR = 32kSPS
INPUT FREQUENCY = 1kHz
Figure 41. FFT Plot, Low Power Mode at 32 kSPS,
Input Frequency (fIN) = 1 kHz, Sinc5 Filter Enabled
–100
–125
INPUT FREQUENCY (Hz)
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
TA = 25°C
VREF = 2.5V
VIN = –0.5dBFS
–120
–115
–110
–105
Figure 42. THD vs. Input Frequency at 16 kSPS, Low Power Mode,
Sinc5 Filter Enabled
–100
–135
INPUT FREQUENCY (Hz)
–130
–125
–120
–115
–110
–105
GAIN = 1
GAIN = 2
GAIN = 4
GAIN = 8
TA = 25°C
VREF = 2.5V
VIN = –0.5dBFS
Figure 43. THD vs. Input Frequency at 4 kSPS, Low Power Mode,
Sinc3 Filter Enabled



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