AD7274_05 データシートの表示（PDF） - Analog Devices
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AD7274_05 Datasheet PDF : 29 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
–20 16384 POINT FFT
FSAMPLE = 3MSPS
FIN = 1MHz
SINAD = 71.05
–40 THD = –80.9
SFDR = –82.2
–60
–80
–100
–120
FREQUENCY (kHz)
Figure 10. AD7274 Dynamic Performance at 3 MSPS, Input Tone = 1 MHz
–20 16384 POINT FFT
FSAMPLE = 3MSPS
FIN = 1MHz
SINAD = 66.56
–40 THD = –77.4
SFDR = –78.2
–60
–80
–100
–120
FREQUENCY (kHz)
Figure 11. AD7273 Dynamic Performance at 3 MSP, Input Tone = 1 MHz
72.2
72.0
71.8
71.6
71.4
71.2
71.0
70.8
70.6
70.4
70.2
70.0
69.8
69.6
69.4
69.2
69.0
100
FSAMPLE = 3MSPS
VDD = 3.6V
VDD = 2.5V
VDD = 3V
INPUT FREQUENCY (kHz)
1000 1500
Figure 12. AD7274 SINAD vs. Analog Input Frequency at 3 MSPS
for Various Supply Voltages, SCLK Frequency = 48 MHz
AD7273/AD7274
72.2
72.0
71.8
71.6
71.4
71.2
71.0
70.8
70.6
70.4
70.2
100
VDD = 3V
VDD = 3.6V
FSAMPLE = 3MSPS
VDD = 2.5V
INPUT FREQUENCY (kHz)
1000 1500
Figure 13. AD7274 SNR vs. Analog Input Frequency at 3 MSPS
for Various Supply Voltages, SCLK Frequency = 48 MHz
–72
–74
–76
VDD = 3V
–78
–80
–82
VDD = 2.5V
–84
–86
VDD = 3.6V
–88
–90
100
INPUT FREQUENCY (kHz)
1000 1500
Figure 14. THD vs. Analog Input Frequency at 3 MSPS
for Various Supply Voltages, SCLK Frequency = 48 MHz
–40
–50
RIN = 100Ω
–60
–70
RIN = 10Ω
–80
RIN = 0Ω
–90
100
INPUT FREQUENCY (kHz)
1000 1500
Figure 15. THD vs. Analog Input Frequency at 3 MSPS for Various Source
Impedance, SCLK Frequency = 48 MHz, Supply Voltage = 3 V
Rev. 0 | Page 11 of 28
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