AD7682 데이터 시트보기 (PDF) - Analog Devices
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AD7682 Datasheet PDF : 28 Pages
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AD7682/AD7689
100
95
90
85
80
75
70
VDD = VREF = 5V, –0.5dB
VDD = VREF = 5V, –10dB
VDD = VREF = 2.5V, –0.5dB
65
VDD = VREF = 2.5V, –10dB
60
0
50
100
150
FREQUENCY (kHz)
Figure 12. SNR vs. Frequency
96
SNR @ 2kHz
94
SINAD @ 2kHz
SNR @ 20kHz
SINAD @ 20kHz
92
ENOB @ 2kHz
ENOB @ 20kHz
90
200
17.0
16.5
16.0
15.5
88
15.0
86
14.5
84
14.0
82
13.5
80
13.0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
REFERENCE VOLTAGE (V)
Figure 13. SNR, SINAD, and ENOB vs. Reference Voltage
96
fIN = 20kHz
94
VDD = VREF = 5V
92
90
88
VDD = VREF = 2.5V
86
84
–55 –35 –15
5 25 45 65
TEMPERATURE (°C)
85 105 125
Figure 14. SNR vs. Temperature
100
95
90
85
80
75
70
VDD = VREF = 5V, –0.5dB
VDD = VREF = 5V, –10dB
VDD = VREF = 2.5V, –0.5dB
65
VDD = VREF = 2.5V, –10dB
60
0
50
100
150
200
FREQUENCY (kHz)
Figure 15. SINAD vs. Frequency
130
125
120
115
110
105
100
95
90
85
80
75
70
1.0
–60
–65
–70
SFDR = 2kHz
–75
–80
–85
SFDR = 20kHz
–90
THD = 20kHz
–95
–100
THD = 2kHz
–105
–110
–115
–120
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
REFERENCE VOLTAGE (V)
Figure 16. SFDR and THD vs. Reference Voltage
–90
fIN = 20kHz
–95
–100
VDD = VREF = 5V
VDD = VREF = 2.5V
–105
–110
–55 –35 –15
5 25 45 65
TEMPERATURE (°C)
85 105 125
Figure 17. THD vs. Temperature
Rev. 0 | Page 12 of 28
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