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AD7944BCPZ Datasheet(PDF) 10 Page - Analog Devices

Part # AD7944BCPZ
Description  14-Bit, 2.5 MSPS, PulSAR 15.5 mW ADC in LFCSP
PDF  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7944BCPZ Datasheet(HTML) 10 Page - Analog Devices

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AD7944
Rev. 0 | Page 10 of 28
0
250
500
750
1000
1250
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
0
250
500
750
1000
1250
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
FREQUENCY (kHz)
fS = 2.5MSPS
fIN = 20kHz
SNR = 84.65dB
THD = –100dB
SINAD = 84.5dB
fS = 2.5MSPS
fIN = 20kHz
SNR = 84dB
THD = –102dB
SINAD = 84dB
FREQUENCY (kHz)
Figure 11. FFT Plot (External Reference)
Figure 14. FFT Plot (Internal Reference)
–
12.0
78
2.5
3.0
3.5
4.0
4.5
5.0
SINAD
ENOB
SNR
12.5
13.0
13.5
14.0
14.5
15.0
79
80
81
82
83
84
REFERENCE VOLTAGE (V)
Figure 12. SNR, SINAD, and ENOB vs. Reference Voltage
–105
–104
–103
–102
–101
100
2.50
2.75
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
REFERENCE VOLTAGE (V)
Figure 15. THD vs. Reference Voltage
–110
80.0
80.5
1
10
100
1000
FREQUENCY (kHz)
81.0
81.5
82.0
82.5
83.0
83.5
84.0
84.5
85.0
Figure 13. SINAD vs. Frequency
–
–105
–100
–95
–90
–85
80
1
10
100
1000
FREQUENCY (kHz)
Figure 16. THD vs. Frequency



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