AD7475ARM-REEL7 查看數據表（PDF） - Analog Devices
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AD7475ARM-REEL7 Datasheet PDF : 24 Pages
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AD7475/AD7495
TYPICAL PERFORMANCE CURVES
Figure 7 shows a typical FFT plot for the AD7475 at a 1 MHz
sample rate and a 100 kHz input frequency.
8192 POINT FFT
fSAMPLE = 1MSPS
–15
fIN = 100kHz
SINAD = 70.46dB
THD = –87.7dB
–35
SFDR = –89.5dB
–55
–75
–95
–115
0
50 100 150 200 250 300 350 400 450 500
FREQUENCY (kHz)
Figure 7. AD7475 Dynamic Performance
Figure 8 shows a typical FFT plot for the AD7495 at a 1 MHz
sample rate and a 100 kHz input frequency.
8192 POINT FFT
fSAMPLE = 1MSPS
–15
fIN = 100kHz
SINAD = 69.95dB
THD = –89.2dB
–35
SFDR = –91.2dB
–55
–75
–95
–115
0
50 100 150 200 250 300 350 400 450 500
FREQUENCY (kHz)
Figure 8. AD7495 Dynamic Performance
Figure 9 shows the SINAD performance vs. input frequency for
various supply voltages while sampling at 1 MSPS with an SCLK
of 20 MHz.
71.0
70.5
70.0
69.5
69.0
VDD = VDRIVE = 3.60V
VDD = VDRIVE = 4.75V
VDD = VDRIVE = 2.70V
VDD = VDRIVE = 5.25V
68.5
10
100
INPUT FREQUENCY (kHz)
1000
Figure 9. AD7495 SINAD vs. Input Frequency at 1 MSPS
Rev. B | Page 12 of 24
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