AD7468BRM-REEL 查看數據表（PDF） - Analog Devices
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AD7468BRM-REEL Datasheet PDF : 28 Pages
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AD7466/AD7467/AD7468
5
8192 POINT FFT
–5
VDD = 1.8V
fSAMPLE = 100kSPS
–15
fIN = 30kHz
SINAD = 49.83dB
–25
THD = –79.37dB
SFDR = –70.46dB
–35
–45
–55
–65
–75
–85
–95
0
5 10 15 20 25 30 35 40 45 50
FREQUENCY (kHz)
Figure 8. AD7468 Dynamic Performance at 100 kSPS
–65
TEMP = 25°C
–66
–67
–68
–69
VDD = 1.8V VDD = 1.6V VDD = 2.2V
–70
–71
–72
VDD = 3.6V VDD = 3V VDD = 2.7V
–73
10
100
INPUT FREQUENCY (kHz)
Figure 9. AD7466 SINAD vs. Analog Input Frequency
at 100 kSPS for Various Supply Voltages
–68.0
–68.5
TEMP = 25°C
–69.0
–69.5
–70.0
–70.5
–71.0
VDD = 1.8V VDD = 1.6V
VDD = 2.2V
–71.5
–72.0
–72.5
–73.0
VDD = 3.6V VDD = 3V VDD = 2.7V
10
100
INPUT FREQUENCY (kHz)
Figure 10. AD7466 SNR vs. Analog Input Frequency
at 100 kSPS for Various Supply Voltages
–65
TEMP = 25°C
–67
–69
–71
–73
–75
–77
VDD = 1.6V
–79
VDD = 1.8V
VDD = 2.2V
VDD = 3V
–81
–83
–85
10
VDD = 3.6V
INPUT FREQUENCY (kHz)
VDD = 2.7V
100
Figure 11. AD7466 THD vs. Analog Input Frequency
at 100 kSPS for Various Supply Voltages
–76
TEMP = 25°C
VDD = 2.7V
–77
–78
–79
–80
RIN = 10Ω
–81
RIN = 1kΩ
–82
RIN = 510Ω
–83
RIN = 100Ω
–84
10
INPUT FREQUENCY (kHz)
RIN = 0Ω
100
Figure 12. AD7466 THD vs. Analog Input Frequency
for Various Source Impedances
1.0
VDD = 1.8V
0.8 TEMP = 25°C
fIN = 50Hz
0.6 fSAMPLE = 100kSPS
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
512 1024 1536 2048 2560 3072 3584 4096
CODE
Figure 13. AD7466 INL Performance
Rev. C | Page 14 of 28
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