AD9861 Analog Devices, AD9861 Datasheet - Page 18

• Manufacturer Part Number: AD9861
• Manufacturer: Analog Devices

Specifications of AD9861

• Resolution (bits): 10bit
• # Chan: 2
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9861
Figure 52 to Figure 57 use the same input data to the Tx path, a 64-carrier OFDM signal over a 20 MHz bandwidth, centered at 20 MHz.
The center two carriers are removed from the signal to observe the in-band intermodulation distortion (IMD) from the DAC output.
Figure 52. AD9861 Tx Path FFT, 64-Carrier (Center Two Carriers Removed)
OFDM Signal over 20 MHz Bandwidth, Centered at 20 MHz, with
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Figure 53. AD9861 Tx Path FFT, Lower-Band IMD Products of
Figure 54. AD9861 Tx Path FFT of OFDM Signal in Figure 52,
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0
20 mA Full-Scale Output into 60 Ω Differential Load
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12.5
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OFDM Signal in Figure 52
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with 1× Interpolation
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
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Figure 56. AD9861 Tx Path FFT, Upper-Band IMD Products of
Figure 57. AD9861 Tx Path FFT of OFDM Signal in Figure 52,
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27.5
Figure 55. AD9861 Tx Path FFT, In-Band IMD Products of
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OFDM Signal in Figure 52
OFDM Signal in Figure 52
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with 4× Interpolation
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
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