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AD9643 Datasheet(PDF) 16 Page - Analog Devices

Part # AD9643
Description  14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
PDF  36 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9643 Datasheet(HTML) 16 Page - Analog Devices

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AD9643
Rev. A | Page 16 of 36
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 1.8 V, DRVDD = 1.8 V, sample rate = 250 MSPS, DCS enabled, 1.75 V p-p differential input, VIN = −1.0 dBFS, 32k sample,
TA = 25°C, unless otherwise noted.
0
–20
THIRD HARMONIC
SECOND HARMONIC
–40
–60
–80
–100
–120
–140
10
0
203040
50
60
70
80
FREQUENCY (MHz)
170MSPS
90.1MHz @ –1dBFS
SNR = 70.8dB (71.8dBFS)
SFDR = 88dBc
Figure 6. AD9643-170 Single-Tone FFT with fIN = 90.1 MHz
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–20
THIRD HARMONIC
SECOND HARMONIC
–40
–60
–80
–100
–120
–140
10
0
20
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405060
70
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FREQUENCY (MHz)
170MSPS
185.1MHz @ –1dBFS
SNR = 69.8dB (70.8dBFS)
SFDR = 85dBc
Figure 7. AD9643-170 Single-Tone FFT with fIN = 185.1 MHz
0
–20
THIRD HARMONIC
SECOND HARMONIC
–40
–60
–80
–100
–120
–140
10
020
30
40
50
60
70
80
FREQUENCY (MHz)
170MSPS
305.1MHz @ –1dBFS
SNR = 68.3dB (69.3dBFS)
SFDR = 79dBc
Figure 8. AD9643-170 Single-Tone FFT with fIN = 305.1 MHz
120
100
80
60
40
20
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
0
INPUT AMPLITUDE (dBFS)
SFDR (dBFS)
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
Figure 9. AD9643-170 Single-Tone SNR/SFDR vs. Input Amplitude (AIN) with
fIN = 90.1 MHz
100
95
90
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330 360 390
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210
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FREQUENCY (MHz)
SNR (dBFS)
SFDR (dBc)
Figure 10. AD9643-170 Single-Tone SNR/SFDR vs. Input Frequency (fIN)
0
–20
–40
–60
–80
–100
–120
–7.0
–21.0
–32.5
–44.0
–55.5
–67.0
–78.5
–90.0
INPUT AMPLITUDE (dBFS)
SFDR (dBFS)
IMD3 (dBc)
IMD3 (dBFS)
SFDR (dBc)
Figure 11. AD9643-170 Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with
fIN1 = 89.12, fIN2 = 92.12 MHz, fS = 170 MSPS



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