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AD9268 数据表(PDF) 18 Page - Analog Devices

部件名 AD9268
功能描述  1.8 V Dual Analog-to-Digital Converter (ADC)
PDF  45 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD9268 数据表(HTML) 18 Page - Analog Devices

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AD9268
Rev. A | Page 17 of 44
40
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 1.8 V, DRVDD = 1.8 V, rated sample rate, DCS enabled, 1.0 V internal reference, 2 V p-p differential input, VIN = −1.0 dBFS, and
32k sample, TA = 25°C, unless otherwise noted.
0
–20
–40
–60
–80
–100
–120
–140
010
20
30
FREQUENCY (MHz)
SECOND HARMONIC
80MSPS
2.4MHz @ –1dBFS
SNR = 79.0dB (80.0dBFS)
SFDR = 98dBc
THIRD HARMONIC
Figure 8. AD9268-80 Single-Tone FFT with fIN = 2.4 MHz
0
–20
–40
–60
–80
–100
–120
–140
010
20
30
FREQUENCY (MHz)
40
SECOND HARMONIC
THIRD HARMONIC
80MSPS
70.1MHz @ –1dBFS
SNR = 77.5dB (78.5dBFS)
SFDR = 89.2dBc
Figure 9. AD9268-80 Single-Tone FFT with fIN = 70.1 MHz
0
–20
–40
–60
–80
–100
–120
–140
010
20
30
FREQUENCY (MHz)
40
80MSPS
140.1MHz @ –1dBFS
SNR = 76.0dB (77.0dBFS)
SFDR = 81.1dBc
SECOND HARMONIC
THIRD HARMONIC
Figure 10. AD9268-80 Single-Tone FFT with fIN = 140.1 MHz
0
–20
–40
–60
–80
–100
–120
–140
010
20
30
40
FREQUENCY (MHz)
SECOND HARMONIC
80MSPS
200.3MHz @ –1dBFS
SNR = 74.3dB (75.3dBFS)
SFDR = 83dBc
THIRD HARMONIC
Figure 11. AD9268-80 Single-Tone FFT with fIN = 200.1 MHz
0
–20
–40
–60
–80
–100
–120
–140
010
20
30
FREQUENCY (MHz)
40
SECOND HARMONIC
THIRD HARMONIC
80MSPS
70.1MHz @ –6dBFS
SNR = 73.0dB (79.0dBFS)
SFDR = 98dBc
Figure 12. AD9268-80 Single-Tone FFT with fIN = 70.1 MHz with Dither
Enabled
120
100
80
60
40
20
0
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
INPUT AMPLITUDE (dBFS)
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
SFDR (dBFS)
Figure 13. AD9268-80 Single-Tone SNR/SFDR vs. Input Amplitude (AIN)
with fIN = 98.12 MHz



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