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AD7723 Datasheet(PDF) 16 Page - Analog Devices

Part # AD7723
Description  16-Bit, 1.2 MSPS CMOS, Sigma-Delta ADC
PDF  33 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7723 Datasheet(HTML) 16 Page - Analog Devices

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AD7723
Rev. C | Page 15 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = DVDD = 5 V; TA = 25°C; CLKIN = 19.2 MHz; external 2.5 V reference, unless otherwise noted.
ANALOG INPUT LEVEL (dB)
110
40
–50
–40
–30
–20
–10
0
100
90
80
60
50
70
THD
SIGNAL FREQUENCY = 98kHz
MEASUREMENT BANDWIDTH = 460kHz
SFDR
SNR
Figure 12. SNR, THD, and SFDR vs. Analog Input Level Relative to Full Scale
(Output Data Rate = 1.2 MHz)
ANALOG INPUT LEVEL (dB)
110
40
–50
0
–40
–30
–20
–10
100
90
80
60
50
70
THD
SIGNAL FREQUENCY = 98kHz
MEASUREMENT BANDWIDTH = 300kHz
SFDR
SNR
Figure 13. 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
25
50
75
–50
SIGNAL FREQUENCY = 98kHz
MEASUREMENT BANDWIDTH = 460kHz
SNR
THD
3RD
2ND
Figure 14. 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
25
50
75
–50
SNR
THD
2ND
3RD
SIGNAL FREQUENCY = 98kHz
MEASUREMENT BANDWIDTH = 300kHz
Figure 15. 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 16. 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 17. SNR, THD, and SFDR vs. Sampling Frequency (Decimate by 32)



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