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AD7980 Datasheet(PDF) 9 Page - Analog Devices

Part No. AD7980
Description  16-bit, 1 MSPS PulSAR ADC in MSOP/QFN
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD7980 Datasheet(HTML) 9 Page - Analog Devices

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Preliminary Technical Data
AD7980
Rev Pr C | Page 9 of 22
TYPICAL PERFORMANCE CHARACTERISTICS: VDD=2.5V, VREF=5.0V, VIO=3.3V
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
0
16384
32768
49152
65536
CODE
POSITIVE INL: +0.23 LSB
NEGATIVE INL: -0.68 LSB
Figure 6. Integral Nonlinearity vs. Code
01
543
172
00
34629
45049
180726
0
20000
40000
60000
80000
100000
120000
140000
160000
180000
200000
7FF9
7FFA
7FFB
7FFC
7FFD
7FFE
7FFF
8000
8001
CODE IN HEX
Figure 7. Histogram of a DC Input at the Code Center
-180
-160
-140
-120
-100
-80
-60
-40
-20
0
0
100
200
300
400
500
FREQUENCY (kHz)
fS = 1 MSPS
fIN = 20kHz
SNR = 91.5dB
THD = -101.0dB
SFDR = 103.5dB
SINAD = 91.0dB
Figure 8. FFT Plot
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
0
16384
32768
49152
65536
CODE
POSITIVE DNL: +0.32 LSB
NEGATIVE DNL: -0.25 LSB
Figure 9. Differential Nonlinearity vs. Code
005
3567
000
123672
5587
128289
0
20000
40000
60000
80000
100000
120000
140000
7FF9
7FFA
7FFB
7FFC
7FFD
7FFE
7FFF
8000
8001
8002
CODE IN HEX
Figure 10. Histogram of a DC Input at the Code Transition


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