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AD7440BRT-R2 数据表(PDF) 12 Page - Analog Devices

部件名 AD7440BRT-R2
功能描述  Differential Input, 1 MSPS ADCs in an 8-Lead SOT-23
PDF  28 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7440BRT-R2 数据表(HTML) 12 Page - Analog Devices

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AD7440/AD7450A
Rev. C | Page 12 of 28
AD7440/AD7450A–TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, fS = 1 MSPS, fSCLK = 18 MHz, unless otherwise noted.
75
70
65
60
55
10
100
1000
FREQUENCY (kHz)
VDD = 5.25V
VDD = 4.75V
VDD = 3.6V
VDD = 2.7V
Figure 7. AD7450A SINAD vs. Analog Input Frequency for Various
Supply Voltages
0
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10
1000
100
10000
FREQUENCY (kHz)
VDD = 3V
VDD = 5V
Figure 8. CMRR vs. Frequency for VDD = 5 V and 3 V
0
–120
–20
–40
–60
–80
–100
0
100
200
300
400
500
600
700
800
900
1000
SUPPLY RIPPLE FREQUENCY (kHz)
100mV p-p SINEWAVE ON VDD
NO DECOUPLING ON VDD
VDD = 3V
VDD = 5V
Figure 9. PSRR vs. Supply Ripple Frequency without Supply Decoupling
0
–140
–120
–100
–80
–60
–40
–20
0
100
200
300
400
500
FREQUENCY (kHz)
8192 POINT FFT
fSAMPLE = 1MSPS
fIN = 100kSPS
SINAD = +71.7dB
THD = –82dB
SFDR = –83dB
Figure 10. AD7450A Dynamic Performance with VDD = 5 V
1.0
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
0
1024
2048
3072
4096
CODE
Figure 11. Typical DNL for the AD7450A for VDD = 5 V
1.0
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
0
1024
2048
3072
4096
CODE
Figure 12. Typical INL for the AD7450A for VDD = 5 V



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