AD7694 Analog Devices, AD7694 Datasheet - Page 10

• Manufacturer Part Number: AD7694
• Manufacturer: Analog Devices

Specifications of AD7694

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 250kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (Vref) p-p,Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: SOP

AD7694
100
–100
–105
–110
–115
95
90
85
80
100
–80
–85
–90
–95
95
90
85
80
75
70
2.5
Figure 11. SNR, S/(N + D), and ENOB vs. Reference Voltage
0
0
SNR
S/[N+D]
3.0
Figure 12. S/[N + D] vs. Frequency
40
Figure 13. THD vs. Frequency
50
REFERENCE VOLTAGE (V)
3.5
V
REF
FREQUENCY (kHz)
FREQUENCY (kHz)
80
= 2.5V, –1dB
V
REF
100
4.0
= 5V, –1dB
120
ENOB
V
REF
V
4.5
REF
V
= 5V, –10dB
REF
150
= 2.5V, –1dB
160
= 5V, –1dB
5.0
200
200
17
16
15
14
13
Rev. A | Page 10 of 16
1200
1000
1000
800
600
400
200
900
800
700
600
500
400
300
200
100
750
500
250
0
0
0
–55
–55
2.5
Figure 16. Power-Down Current vs. Temperature
Figure 15. Operating Current vs. Temperature
–35
–35
Figure 14. Operating Current vs. Supply
VDD = 5V,
3.0
–15
–15
f
3.5
S
5
5
TEMPERATURE (°C)
= 100kSPS
TEMPERATURE (°C)
SUPPLY (V)
25
25
4.0
45
45
VDD = 2.7V,
4.5
65
65
f
S
85
f
85
= 100kSPS
S
= 100kSPS
5.0
105
105
125
125
5.5