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AD7682 데이터시트(PDF) 11 Page - Analog Devices

부품명 AD7682
상세설명  14-Bit, 8-Channel, 250 kSPS PulSAR ADC
PDF  28 Pages
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD7682 데이터시트(HTML) 11 Page - Analog Devices

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AD7949
Rev. A | Page 11 of 28
90
85
80
75
70
65
60
0
50
100
150
200
FREQUENCY (kHz)
VDD = VREF = 5V, –0.5dB
VDD = VREF = 5V, –10dB
VDD = VREF = 2.5V, –0.5dB
VDD = VREF = 2.5V, –10dB
Figure 11. SNR vs. Frequency
88
86
84
82
80
78
15.5
15.0
14.5
14.0
13.5
13.0
1.0
REFERENCE VOLTAGE (V)
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SNR
SINAD
ENOB
Figure 12. SNR, SINAD, and ENOB vs. Reference Voltage
90
85
80
75
70
65
60
–55
TEMPERATURE (°C)
–35
–15
5
25
45
65
85
105
125
fIN = 20kHz
VDD = VREF = 5V
VDD = VREF = 2.5V
Figure 13. SNR vs. Temperature
90
85
80
75
70
65
60
0
50
100
150
200
FREQUENCY (kHz)
VDD = VREF = 5V, –0.5dB
VDD = VREF = 5V, –10dB
VDD = VREF = 2.5V, –0.5dB
VDD = VREF = 2.5V, –10dB
Figure 14. SINAD vs. Frequency
130
125
120
115
110
105
100
95
90
85
80
75
70
1.0
–60
–65
–70
–75
–80
–85
–90
–95
–100
–105
–110
–115
–120
REFERENCE VOLTAGE (V)
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SFDR
THD
Figure 15. SFDR and THD vs. Reference Voltage
–90
–95
–100
–105
–110
–55
TEMPERATURE (°C)
–35
–15
5
25
45
65
85
105
125
fIN = 20kHz
VDD = VREF = 5V
VDD = VREF = 2.5V
Figure 16. THD vs. Temperature



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