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AD7723 Datasheet(PDF) 13 Page - Analog Devices

Part # AD7723
Description  16-Bit, 1.2 MSPS CMOS, Sigma-Delta ADC
PDF  23 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7723 Datasheet(HTML) 13 Page - Analog Devices

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AD7723
–13–
REV. 0
Typical Performance Characteristics–
ANALOG INPUT LEVEL – dB
110
40
–28
2
–23
–18
–13
–8
–3
100
90
80
60
50
70
SNR
THD
SFDR
SIGNAL FREQUENCY = 98kHz
MEASUREMENT BANDWIDTH = 460kHz
Figure 9. SNR, THD and SFDR vs. Analog Input Level
Relative to Full Scale (Output Data Rate = 1.2 MHz)
ANALOG INPUT LEVEL – dB
110
40
–28
2
–23
–18
–13
–8
–3
100
90
80
60
50
70
SNR
THD
SFDR
SIGNAL FREQUENCY = 98kHz
MEASUREMENT BANDWIDTH = 300kHz
Figure 10. SNR, THD and SFDR vs. Analog Input Level
Relative to Full Scale (Output Data Rate = 600 kHz)
102
100
84
92
90
88
86
96
94
98
TEMPERATURE – C
100
–25
0
255075
–50
SIGNAL FREQUENCY = 98kHz
MEASUREMENT BANDWIDTH = 460kHz
SNR
THD
3RD
2ND
Figure 11. SNR and THD vs. Temperature (Output Data
Rate = 1.2 MHz)
106
104
88
96
94
92
90
100
98
102
TEMPERATURE – C
100
–25
0
255075
–50
SNR
THD
2ND
3RD
SIGNAL FREQUENCY = 98kHz
MEASUREMENT BANDWIDTH = 300kHz
Figure 12. SNR and THD vs. Temperature (Output Data
Rate = 600 kHz)
OUTPUT WORD RATE – kHz
106
92
100
500
1000
1500
2150
104
102
100
96
94
98
SNR
THD
SFDR
90
88
86
84
INPUT SIGNAL = 10kHz
MEASUREMENT BANDWIDTH = 0.383
OWR
Figure 13. SNR, THD and SFDR vs. Sampling Frequency
(Decimate by 16)
OUTPUT WORD RATE – kHz
115
90
50
150
300
600
900
110
105
95
100
SNR
THD
SFDR
INPUT SIGNAL = 10kHz
MEASUREMENT BANDWIDTH = 0.5
OWR
450
750
Figure 14. SNR, THD and SFDR vs. Sampling Frequency
(Decimate by 32)
(AVDD = DVDD = 5 V; TA = +25 C; CLKIN = 19.2 MHz; External +2.5 V Reference, unless otherwise noted)



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