AD7634 Analog Devices, AD7634 Datasheet - Page 13

• Manufacturer Part Number: AD7634
• Manufacturer: Analog Devices

Specifications of AD7634

• Resolution (bits): 18bit
• # Chan: 1
• Sample Rate: 670kSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: 10V p-p,20 V p-p,40 V p-p
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

Figure 12. SNR, SINAD, and ENOB vs. Frequency, Unipolar 5 V Range
100
98
96
94
92
90
88
86
84
82
80
–100
–120
–140
–160
–180
103
102
101
100
–20
–40
–60
–80
99
98
97
Figure 11. FFT 20 kHz, Bipolar 5 V Range, Internal Reference
1
0
–55
0
ENOB
–35
50
–15
Figure 13. SNR vs. Temperature
0V TO 10V
0V TO 5V
100
10
FREQUENCY (kHz)
5
SINAD
TEMPERATURE (°C)
FREQUENCY (kHz)
150
25
SNR
45
200
±10V
100
65
±5V
250
f
f
SNR = 98.3dB
THD = –116.8dB
SFDR = 121dB
SINAD = 97.8dB
S
IN
85
= 670kSPS
= 20.1kHz
105
300
1000
125
18.0
17.5
17.0
16.5
16.0
15.5
15.0
14.5
14.0
13.5
13.0
Rev. A | Page 13 of 32
Figure 15. THD, Harmonics, and SFDR vs. Frequency, Unipolar 5 V Range
–100
–110
–120
–130
–140
–70
–80
–90
Figure 14. SNR and SINAD vs. Input Level (Referred to Full Scale)
103.0
102.5
102.0
101.5
101.0
100.5
100.0
103
102
101
100
99
98
97
1
–55
HARMONIC
–60
THIRD
SFDR
–35
–50
THD
Figure 16. SINAD vs. Temperature
–15
10
FREQUENCY (kHz)
–40
5
TEMPERATURE (°C)
INPUT LEVEL (dB)
25
0V TO 5V
–30
45
0V TO 10V
±5V
0V TO 5V
0V TO 10V
100
65
–20
±10V
HARMONIC
±10V
SECOND
±5V
85
–10
105
AD7634
SNR
SINAD
1000
125
140
120
100
80
60
40
20
0
0