AD7277BUJZ-REEL7(RevC) Просмотр технического описания (PDF) - Analog Devices
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AD7277BUJZ-REEL7 Datasheet PDF : 28 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, unless otherwise noted.
16,384 POINT FFT
–20
FSAMPLE = 3MSPS
FIN = 1MHz
SINAD = 71.2dB
THD = –80.9dB
–40
SFDR = –82.4dB
VDD = 3V
–60
–80
–100
–120
0
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500
FREQUENCY (kHz)
Figure 10. AD7276 Dynamic Performance at 3 MSPS, Input Tone = 1 MHz
–10
16,384 POINT FFT
–20
FSAMPLE = 3MSPS
FIN = 1MHz
–30
SINAD = 61.6dB
THD = –80.2dB
–40
SFDR = –83.4dB
VDD = 3V
–50
–60
–70
–80
–90
–100
–110
0
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500
FREQUENCY (kHz)
Figure 11. AD7277 Dynamic Performance at 3 MSPS, Input Tone = 1 MHz
72.5
72.0
VDD = 3.6V
71.5
71.0
70.5
70.0
VDD = 2.35V
VDD = 3V
69.5
69.0
68.5
68.0
67.5
100
INPUT FREQUENCY (kHz)
1000 1500
Figure 12. AD7276 SINAD vs. Analog Input Frequency at 3 MSPS
for Various Supply Voltages, SCLK Frequency = 48 MHz
AD7276/AD7277/AD7278
73.0
72.5
VDD = 3.6V
72.0
71.5
71.0
VDD = 3V
70.5
VDD = 2.35V
70.0
69.5
69.0
100
INPUT FREQUENCY (kHz)
1000 1500
Figure 13. AD7276 SNR vs. Analog Input Frequency at 3 MSPS
for Various Supply Voltages, SCLK Frequency = 48 MHz
30,000
25,000
30,000
CODES
20,000
15,000
10,000
5,000
0
2046
2047
2048
CODE
2049
2050
Figure 14. Histogram of Codes for 30,000 Samples
–72
–74
–76
VDD = 2.35V
–78
VDD = 3V
–80
–82
–84
VDD = 3.6V
–86
–88
–90
100
INPUT FREQUENCY (kHz)
1000 1500
Figure 15. THD vs. Analog Input Frequency at 3 MSPS
for Various Supply Voltages, SCLK Frequency = 48 MHz
Rev. C | Page 13 of 28
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