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AD9268 데이터시트(PDF) 23 Page - Analog Devices

부품명 AD9268
상세설명  1.8 V Dual Analog-to-Digital Converter (ADC)
PDF  45 Pages
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD9268 데이터시트(HTML) 23 Page - Analog Devices

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AD9268
Rev. A | Page 22 of 44
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FREQUENCY (MHz)
125MSPS
70.1MHz @ –6dBFS
SNR = 72.2dB (78.2dBFS)
SFDR = 97dBc
SECOND HARMONIC
THIRD HARMONIC
Figure 38. AD9268-125 Single-Tone FFT with fIN = 70.1 MHz @ −6 dBFS
with Dither Enabled
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FREQUENCY (MHz)
SECOND HARMONIC
THIRD HARMONIC
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125MSPS
70.1MHz @ –23dBFS
SNR = 56.8dB (79.8dBFS)
SFDR = 67.7dBc
Figure 39. AD9268-125 Single-Tone FFT with fIN = 70.1 MHz @ −23 dBFS
with Dither Disabled, 1M Sample
0
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54
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FREQUENCY (MHz)
SECOND HARMONIC
THIRD HARMONIC
0
–15
–30
–45
–60
–75
–90
–105
–120
–135
–150
125MSPS
70.1MHz @ –23dBFS
SNR = 56.2dB (57.2dBFS)
SFDR = 86.6dBc
Figure 40. AD9268-125 Single-Tone FFT with fIN = 70.1 MHz @ −23 dBFS
with Dither Enabled, 1M Sample
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20
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–100
–90
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INPUT AMPLITUDE (dBFS)
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
SFDR (dBFS)
Figure 41. AD9268-125 Single-Tone SNR/SFDR vs. Input Amplitude (AIN)
with fIN = 2.4 MHz
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60
40
20
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–100
–90
–80
–70
–60
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–20
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0
INPUT AMPLITUDE (dBFS)
SNR (dBFS)
SFDR (dBc)
SFDR (dBFS)
SNR (dBc)
Figure 42. AD9268-125 Single-Tone SNR/SFDR vs. Input Amplitude (AIN)
with fIN = 98.12 MHz
120
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INPUT AMPLITUDE (dBFS)
SNR (DITHER ON)
SNR (DITHER OFF)
SFDR (DITHER ON)
SFDR (DITHER OFF)
Figure 43. AD9268-125 Single Tone SNR/SFDR vs. Input Amplitude (AIN)
with fIN = 30 MHz with and without Dither Enabled



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