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ADL5385ACPZ-R2 数据表(PDF) 18 Page - Analog Devices |
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ADL5385ACPZ-R2 数据表(HTML) 18 Page - Analog Devices |
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18 / 24 page  ADL5385 Rev. 0 | Page 18 of 24 LO GENERATION USING PLLs Analog Devices has a line of PLLs that can be used for generating the LO signal. Table 4 lists the PLLs together with their maximum frequency and phase noise performance. Table 4. PLL Selection Table Model Frequency FIN (MHz) @ 1 kHz Phase Noise dBc/Hz, 200 kHz PFD ADF4110 550 −91 @ 540 MHz ADF4111 1200 −87@ 900 MHz ADF4112 3000 −90 @ 900 MHz ADF4113 4000 −91 @ 900 MHz ADF4116 550 −89 @ 540 MHz ADF4117 1200 −87 @ 900 MHz ADF4118 3000 −90 @ 900 MHz The ADF4360 comes as a family of chips, with nine operating frequency ranges. One can be chosen depending on the local oscillator frequency required. While the use of the integrated synthesizer might come at the expense of slightly degraded noise performance from the ADL5385, it can be a cheaper alternative to a separate PLL and VCO solution. Table 5 shows the options available. Table 5. ADF4360 Family Operating Frequencies Model Output Frequency Range (MHz) ADF4360-0 2400/2725 ADF4360-1 2050/2450 ADF4360-2 1850/2150 ADF4360-3 1600/1950 ADF4360-4 1450/1750 ADF4360-5 1200/1400 ADF4360-6 1050/1250 ADF4360-7 350/1800 ADF4360-8 65/400 TRANSMIT DAC OPTIONS The AD9777 recommended in the previous sections is by no means the only DAC that can be used to drive the ADL5385. There are other appropriate DACs depending on the level of performance required. Table 6 lists the dual Tx-DACs that Analog Devices offers. Table 6. Dual Tx—DAC Selection Table Part Resolution (Bits) Update Rate (MSPS Minimum) AD9709 8 125 AD9761 10 40 AD9763 10 125 AD9765 12 125 AD9767 14 125 AD9773 12 160 AD9775 14 160 AD9777 16 160 AD9776 12 1000 AD9778 14 1000 AD9779 16 1000 All DACs listed have nominal bias levels of 0.5 V and use the same DAC-modulator interface shown in Figure 31. MODULATOR/DEMODULATOR OPTIONS Table 7 lists other Analog Devices modulators and demodulators. Table 7. Modulator/Demodulator Options Part Mod/Demod Frequency Range (MHz) Comments AD8345 Mod 140 to 1000 AD8346 Mod 800 to 2500 AD8349 Mod 700 to 2700 ADL5390 Mod 20 to 2400 External Quadrature ADL5370 Mod 300 to 1000 ADL5371 Mod 700 to 1300 ADL5372 Mod 1600 to 2400 ADL5373 Mod 2300 to 3000 ADL5374 Mod 3000 to 4000 AD8347 Demod 800 to 2700 AD8348 Demod 50 to 1000 AD8340 Vector Mod 700 to 1000 AD8341 Vector Mod 1500 to 2400 |
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