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