AD9861BCP-80 Analog Devices Inc, AD9861BCP-80 Datasheet - Page 18

• Manufacturer Part Number: AD9861BCP-80
• Description: IC FRONT-END MIXED SGNL 64-LFCSP
• Manufacturer: Analog Devices Inc

Specifications of AD9861BCP-80

• Rohs Status: RoHS non-compliant
• Rf Type: WLL, WLAN
• Features: 10-bit ADC(s), 10-bit DAC(s)
• Package / Case: 64-VFQFN, CSP Exposed Pad

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,
7.5
7.5
0
20 mA Full-Scale Output into 60 Ω Differential Load
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10
12.5
8.5
20
OFDM Signal in Figure 52
9.0
with 1× Interpolation
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
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17.5
9.5
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50
11.0 11.5 12.0
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12.5
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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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19.25
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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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19.75
29.5
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50
31.0
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21.25
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