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AD7402 데이터시트(PDF) 9 Page - Analog Devices

부품명 AD7402
상세설명  16-Bit, Isolated Sigma-Delta Modulator
PDF  20 Pages
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD7402 데이터시트(HTML) 9 Page - Analog Devices

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Data Sheet
AD7402
Rev. A | Page 9 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, VDD1 = 5 V, VDD2 = 5 V, using sinc3 filter with a 256 oversampling ratio (OSR), unless otherwise noted.
Figure 5. PSRR vs. Supply Ripple Frequency
Figure 6. CMRR vs. Common-Mode Ripple Frequency
Figure 7. SINAD vs. Analog Input Frequency
Figure 8. Fast Fourier Transform (FFT)
Figure 9. Typical DNL Error
Figure 10. Typical INL Error
SUPPLY RIPPLE FREQUENCY (Hz)
–140
–120
–100
–80
–60
–40
–20
0
200mV p-p SINE WAVE ON VDD1
1nF DECOUPLING
10k
100k
1M
COMMON-MODE RIPPLE FREQUENCY (Hz)
–140
–120
–100
–80
–60
–40
–20
0
10k
100k
1M
SINC3 OSR = 256 FILTER
UNFILTERED
ANALOG INPUT FREQUENCY (Hz)
0
10
20
30
40
50
60
70
80
90
5.5V
5V
4.5V
10
100
1k
FREQUENCY (kHz)
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
0
5
10
15
fIN = 35.8Hz
SNR = 87.4dB
SINAD = 86dB
THD = –92dB
CODE (k)
0
10
20
30
40
50
60
70
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
CODE (k)
0
10
20
30
40
50
60
70
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
2.5



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