AD7622 Analog Devices, AD7622 Datasheet - Page 13

• Manufacturer Part Number: AD7622
• Manufacturer: Analog Devices

Specifications of AD7622

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 2MSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

–100
–110
–120
–130
–140
–70
–80
–90
95
93
91
89
87
85
83
81
79
77
75
–100
–120
–140
–160
–180
–20
–40
–60
–80
1
1
0
THIRD HARMONIC
Figure 14. THD, Harmonics, and SFDR vs. Frequency
0
Figure 13. SNR, SINAD, and ENOB vs. Frequency
100
200
Figure 12. FFT 20 kHz
10
10
300
SECOND HARMONIC
FREQUENCY (kHz)
FREQUENCY (kHz)
THD
FREQUENCY (kHz)
400
SINAD
500
ENOB
600
100
100
700
f
f
SNR = 92dB
THD = –117dB
SFDR = 103dB
SINAD = 92dB
S
IN
SNR
= 2MSPS
= 20.1kHz
800
SFDR
900
1000
1000
1000
16.0
15.6
15.2
14.8
14.4
14.0
13.6
13.2
12.8
12.4
12.0
120
110
100
90
80
70
60
50
40
30
20
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–100
–110
–120
–130
–140
–80
–90
94
93
92
91
90
89
88
87
86
–100
–120
–140
–160
–180
–55
–55
–20
–40
–60
–80
0
Figure 17. THD, Harmonics, and SFDR vs. Temperature
SECOND
HARMONIC
0
Figure 16. SNR, SINAD, and ENOB vs. Temperature
–35
–35
100
ENOB
SNR
SFDR
–15
–15
200
Figure 15. FFT 100 kHz
300
5
5
TEMPERATURE (°C)
TEMPERATURE (°C)
THIRD
HARMONIC
FREQUENCY (kHz)
400
25
25
500
45
45
600
THD
65
65
f
f
SNR = 91dB
THD = –100dB
SFDR = 101dB
SINAD = 90.5dB
700
SINAD
S
IN
85
= 2MSPS
85
=100.7kHz
800
AD7622
105
105
900
125
125
1000
16.0
15.5
15.0
14.5
14.0
120
110
100
90
80
70
60