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AD7927 데이터시트(PDF) 11 Page - Analog Devices

부품명 AD7927
상세설명  8-Channel, 200 kSPS, 12-Bit ADC Sequencer in 20-Lead TSSOP
PDF  29 Pages
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD7927 데이터시트(HTML) 11 Page - Analog Devices

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AD7927
Data Sheet
Rev. D | Page 10 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY (kHz)
0
–90
100
–50
–70
80
60
40
20
–10
–30
–110
10
30
50
70
90
4096 POINT FFT
AVDD = 4.75V
fSAMPLE= 200kSPS
fIN = 50kHz
SINAD = 70.714dB
THD = –82.853dB
SFDR = –84.815dB
Figure 4. Dynamic Performance at 200 kSPS
INPUT FREQUENCY (kHz)
75
0100
70
65
60
AVDD =VDRIVE = 5.25V
AVDD =VDRIVE = 4.75V
AVDD =VDRIVE = 3.6V
AVDD =VDRIVE = 2.7V
fSAMPLE = 200kSPS
TA = 25°C
RANGE = 0 TO REFIN
Figure 5. SINAD vs. Analog Input Frequency for Various Supply Voltages
at 200 kSPS
SUPPLY RIPPLE FREQUENCY (kHz)
0
0
200
–40
–60
–80
–90
100
–20
–50
–70
180
160
140
120
80
60
40
20
–10
–30
AVDD = 5V
200mV p-p SINE WAVE ON AVDD
REFIN = 2.5V, 1µF CAPACITOR
TA = 25°C
Figure 6. PSRR vs. Supply Ripple Frequency
INPUT FREQUENCY (kHz)
–50
0
0
1
0
1
–65
–75
–85
–90
–55
–70
–80
–60
fSAMPLE = 200kSPS
TA = 25°C
RANGE = 0 TO REFIN
AVDD =VDRIVE = 5.25V
AVDD =VDRIVE = 4.75V
AVDD =VDRIVE = 2.7V
AVDD =VDRIVE = 3.6V
Figure 7. THD vs. Analog Input Frequency for Various Supply Voltages
at 200 kSPS



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