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AD7666AST Datasheet(PDF) 15 Page - Analog Devices

Part # AD7666AST
Description  16-Bit 500 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

AD7666AST Datasheet(HTML) 15 Page - Analog Devices

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AD7666
Rev. 0 | Page 14 of 28
13.0
13.5
14.0
14.5
15.0
15.5
87
88
89
90
92
–55
–35
–15
5
25
45
65
85
105
125
SNR
S/[N+D]
ENOB
TEMPERATURE (
°C)
91
Figure 17. SNR, S/(N+D), and ENOB vs. Temperature
–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
0.001
0.01
0.1
10
100
1000
10000
100000
10
100
1k
10k
100k
1M
SAMPLING RATE (SPS)
1
DVDD
OVDD
AVDD
PDREF = PDBUF = HIGH
Figure 19. Operating Current vs. Sample Rate
FULL-SCALE
ERROR
ZERO ERROR
–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)
Figure 20. Zero Error, Full-Scale Error without Reference vs. Temperature
2.4994
2.4996
2.4998
2.5000
2.5002
2.5004
2.5006
2.5008
2.5010
2.5012
2.5014
2.5016
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
Figure 21.Typical Reference Voltage Output vs. Temperature (2 Units)
0
5
10
15
20
25
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
REFERENCE DRIFT (ppm/°C)
7.5 8.0
Figure 22. Reference Voltage Temperature Coefficient Distribution (93 Units)



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