AD7690 Analog Devices, AD7690 Datasheet - Page 10

• Manufacturer Part Number: AD7690
• Manufacturer: Analog Devices

Specifications of AD7690

• Resolution (bits): 18bit
• # Chan: 1
• Sample Rate: 400kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP,SOP

AD7690
104
102
100
98
96
94
92
2.3
103
102
101
100
105
100
99
98
97
96
95
95
90
85
80
75
70
65
–55
Figure 13. SNR, SINAD, and ENOB vs. Reference Voltage
0
2.7
–35
3.1
–15
Figure 14. SNR vs. Temperature
Figure 15. SINAD vs. Frequency
REFERENCE VOLTAGE (V)
50
3.5
5
TEMPERATURE (°C)
FREQUENCY (kHz)
3.9
25
V
100
REF
45
4.3
= 5V, –1dB
V
65
REF
4.7
= 5V, –10dB
150
SNR
85
SINAD
ENOB
5.1
V
REF
105
= 5V
5.5
20
19
18
17
16
15
14
125
200
Rev. B | Page 10 of 24
–100
–105
–120
–125
–110
–115
–100
–120
–130
–100
–120
–130
–110
–110
2.3
–90
–60
–70
–80
–90
–55
0
2.7
–35
Figure 16. THD, SFDR vs. Reference Voltage
3.1
V
Figure 17. THD vs. Temperature
–15
REF
Figure 18. THD vs. Frequency
REFERENCE VOLTAGE (V)
50
SFDR
THD
= 5V, –1dB
3.5
5
TEMPERATURE (°C)
FREQUENCY (kHz)
3.9
25
V
REF
100
= 5V, –10dB
45
4.3
65
4.7
150
85
5.1
V
REF
105
= 5V
5.5
135
130
125
120
115
110
125
200