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AD7661AST Datasheet(PDF) 15 Page - Analog Devices

Part # AD7661AST
Description  16-Bit 100 kSPS PulSAR Unipolar ADC with Reference
PDF  29 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7661AST Datasheet(HTML) 15 Page - Analog Devices

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AD7661
Rev. 0 | Page 14 of 28
86
87
88
89
90
–55
–35
–15
5
25
45
65
85
105
125
TEMPERATURE (
°C)
13.5
14.0
14.5
15.0
15.5
SNR
S/[N+D]
ENOB
Figure 17. SNR, S/(N+D), and ENOB vs. Temperature
–120
–115
–110
–105
–100
–55
–35
–15
5
25
45
65
85
105
125
TEMPERATURE (°C)
THD
SECOND
HARMONIC
THIRD
HARMONIC
Figure 18. THD and Harmonics vs. Temperature
SAMPLE RATE (SPS)
10
02965-0-036
100
10000
100000
10
1000
100
1000
10000
0.001
1
0.01
AVDD
OVDD
DVDD
PDREF = PDBUF = HIGH
0.1
Figure 19. Operating Current vs. Sample Rate
–6
–5
–4
–3
–2
–1
0
1
2
3
4
5
6
–55
–35
–15
5
25
45
65
85
105
125
TEMPERATURE (°C)
FULL-SCALE ERROR
ZERO ERROR
Figure 20. Zero Error, Full Scale Error with Reference vs. Temperature
–40
–20
TEMPERATURE (°C)
2.4980
2.4985
2.4990
2.4995
2.5000
2.5005
2.5010
2.5015
0
20
40
60
80
100
120
Figure 21.Typical Reference Voltage Output vs. Temperature (3 Units)
60
10
20
30
REFERENCE DRIFT (ppm/
°C)
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0
50
40
Figure 22. Reference Voltage Temperature Coefficient Distribution (291 Units)



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