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ADL5375ACPZ-R7 数据表(PDF) 29 Page - Analog Devices |
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ADL5375ACPZ-R7 数据表(HTML) 29 Page - Analog Devices |
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29 / 36 page  Data Sheet ADL5375 Rev. C | Page 29 of 36 LO GENERATION USING PLLS Analog Devices has a line of PLLs that can be used for generating the LO signal. Table 5 lists the PLLs together with their maximum frequency and phase noise performance. Table 5. Analog Devices PLL Selection Part Frequency, fIN (MHz) Phase Noise @ 1 kHz Offset and 200 kHz PFD (dBc/Hz) 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 ADF4350 is a fractional-N PLL which offers broadband operation from 137.5 MHz to 4.4 GHz and contains an integrated high performance VCO. Table 6. ADF4350 Phase Noise at Various Frequencies Part Frequency (MHz) Phase Noise @ 10 kHz (dBc/Hz) 25 MHz PFD, 40 KHz Loop BW ADF4350 2200 −97 ADF4350 3300 −92 ADF4350 4400 −90 TRANSMIT DAC OPTIONS The AD9122 recommended in the previous sections of this data sheet is by no means the only DAC that can be used to drive the ADL5375. There are other appropriate DACs, depending on the level of performance required. Table 7 lists the dual TxDAC offered by Analog Devices. Table 7. Dual TxDAC Selection 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 AD9779A 16 1000 All DACs listed have nominal bias levels of 0.5 V and use the same simple DAC modulator interface that is shown in Figure 75. MODULATOR/DEMODULATOR OPTIONS Table 8 lists other Analog Devices modulators and demodulators. Table 8. Modulator/Demodulator Options Part No. Modulator/ Demodulator Frequency Range (MHz) Comments AD8345 Modulator 140 to 1000 AD8346 Modulator 800 to 2500 AD8349 Modulator 700 to 2700 ADL5390 Modulator 20 to 2400 External quadrature ADL5385 Modulator 50 to 2200 ADL5386 Modulator 50 to 2200 Includes VVA and AGC ADL5370 Modulator 300 to 1000 ADL5371 Modulator 500 to 1500 ADL5372 Modulator 1500 to 2500 ADL5373 Modulator 2300 to 3000 ADL5374 Modulator 3000 to 4000 AD8347 Demodulator 800 to 2700 AD8348 Demodulator 50 to 1000 ADL5387 Demodulator 50 to 2000 ADL5380 Demodulator 400 to 6000 ADL5382 Demodulator 700 to 2700 AD8340 Vector modulator 700 to 1000 AD8341 Vector modulator 1500 to 2400 |
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