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AD7765 Datasheet(PDF) 14 Page - Analog Devices

Part # AD7765
Description  Sigma-Delta ADC On-Chip Buffers and Serial Interface
PDF  33 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7765 Datasheet(HTML) 14 Page - Analog Devices

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AD7765
Rev. A | Page 13 of 32
0.00300
–0.00300
–0.00225
–0.00150
–0.00075
0
0.00075
0.00150
0.00225
6k
55k 59,535
10k
15k
20k
25k
30k
35k
40k
45k
50k
16-BIT CODE SCALING
–40°C
+25°C
+85°C
Figure 18. Normal Power Mode INL
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
78,124
60k
40k
20k
FREQUENCY (Hz)
Figure 19. Normal Power Mode; IMD, fIN A = 49.7 kHz, fIN B = 50.3 kHz,
50 kHz Center Frequency, 128× Decimation Rate
2.0
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
6k
55k 59,535
10k
15k
20k
25k
30k
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40k
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50k
CODE
Figure 20. DNL Plot
6k
55k 59,535
10k
15k
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16-BIT CODE SCALING
–40°C
+25°C
+85°C
0.003225
0.003000
0.002250
0.001500
0.000075
0
–0.000120
Figure 21. Low Power Mode INL
110
109
108
107
106
105
104
103
102
0
64
128
192
256
LOW SNR
DECIMATION RATE
NORMAL SNR
Figure 22. Normal and Low Power Mode; SNR vs. Decimation Rate,
1 kHz, −0.5 dB Input Tone



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