AD7687 Analog Devices, AD7687 Datasheet - Page 11

• Manufacturer Part Number: AD7687
• Manufacturer: Analog Devices

Specifications of AD7687

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 250kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP,SOP

Data Sheet
100
100
100
95
90
85
70
95
90
85
80
75
70
95
90
85
80
2.3
–55
0
Figure 13. SNR, S/(N + D), and ENOB vs. Reference Voltage
2.7
–35
Figure 14. S/(N + D) vs. Frequency
–15
3.1
Figure 15. SNR vs. Temperature
50
REFERENCE VOLTAGE (V)
3.5
5
TEMPERATURE (°C)
FREQUENCY (kHz)
VREF = 2.5V, –1dB
25
3.9
100
VREF = 2.5V
VREF = 2.5V, –10dB
VREF = 5V
VREF = 5V, –10dB
45
4.3
ENOB
VREF = 5V, –1dB
S/[N + D]
65
4.7
SNR
150
85
5.1
105
5.5
17.0
16.0
15.0
14.0
13.0
200
125
Rev. B | Page 11 of 28
–100
–110
–120
–100
–105
–110
–115
–120
–125
–130
–100
–110
–120
–130
–60
–70
–80
–90
–90
–55
2.3
0
–35
2.7
Figure 16. THD, SFDR vs. Reference Voltage
THD
VREF = 2.5V
–15
VREF = 5V
Figure 18. THD vs. Temperature
3.1
50
Figure 17. THD vs. Frequency
SFDR
REFERENCE VOLTAGE (V)
5
TEMPERATURE ( ° C)
3.5
FREQUENCY (kHz)
25
100
3.9
45
VREF = 2.5V, –1dB
VREF = 2.5V, –10dB
VREF = 5V, –1dB
4.3
VREF = 5V, –10dB
65
150
4.7
85
AD7687
5.1
105
200
125
5.5