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AD7457BRT-R2 Scheda tecnica(PDF) 9 Page - Analog Devices

Il numero della parte AD7457BRT-R2
Spiegazioni elettronici  Low Power, Pseudo Differential, 100 kSPS 12-Bit ADC in an 8-Lead SOT-23
PDF  21 Pages
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD7457BRT-R2 Scheda tecnica(HTML) 9 Page - Analog Devices

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AD7457
Rev. A | Page 8 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, fS = 100 kSPS, fSCLK = 10 MHz, VDD = 2.7 V to 5.25 V, VREF = 2.5 V, unless otherwise noted.
FREQUENCY (kHz)
65
10
20
50
70
75
VDD = 3V
30
40
VDD = 5V
Figure 5. SINAD vs. Analog Input Frequency for VDD = 3 V and 5 V
0
–20
–40
–80
–60
–120
–100
–140
SUPPLY RIPPLE FREQUENCY (kHz)
0
100
200
300
400
500
900
1000
VDD = 5V
VDD = 3V
100mV p-p SINE WAVE ON VDD
NO DECOUPLING ON VDD
600
700
800
Figure 6. PSRR vs. Supply Ripple Frequency Without Supply Decoupling
FREQUENCY (kHz)
0
–20
–40
–80
–60
–120
–100
–140
0
100
8192 POINT FFT
fSAMPLE = 100kSPS
fIN = 30kHz
SINAD = 71dB
THD = –82dB
SFDR = –83dB
30
50
Figure 7. Dynamic Performance for VDD = 5 V
CODE
1.0
0.8
0.6
0.2
0.4
–0.2
–0.4
–0.6
–0.8
0
–1.0
0
1024
3072
2048
4096
Figure 8. Typical DNL for the AD7457 for VDD = 5 V
CODE
1.0
0.8
0.6
0.2
0.4
–0.2
–0.4
–0.6
–0.8
0
–1.0
0
1024
3072
2048
4096
Figure 9. Typical INL for the AD7457 for VDD = 5 V
CODES
0
2046
2047
2048
2049
2050
2051
27 CODES
24 CODES
9949
CODES
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
Figure 10. Histogram of 10,000 Conversions of a DC Input



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