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ADF7020BCP Datasheet(PDF) 26 Page - Analog Devices |
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ADF7020BCP Datasheet(HTML) 26 Page - Analog Devices |
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26 / 40 page ![]() ADF7020 Preliminary Technical Data Rev. PrH | Page 26 of 40 REGISTER 1—OSCILLATOR/FILTER REGISTER R3 R2 R1 RF R COUNTER DIVIDE RATIO 0 0 . . . 1 1 2 . . . 7 1 0 . . . 1 0 1 . . . 1 X1 XTAL OSC 0 OFF 1ON VA2 VA1 FREQUENCY OF OPERATION 0 880–950 0 870–940 1 860–930 1 0 1 0 1 850–920 D1 XTAL DOUBLER 0 DISABLE ENABLED 1 V1 VCO Band MHz 0 866–940 1 433–470 CP2 CP1 RSET ICP(MA) 3.6k Ω 0 0 0.3 0 1 0.9 1 0 1.5 1 1 2.1 VB4 VB3 VB2 VB1 VCO BIAS CURRENT 0 0.5mA 0 1mA . 1 1 0 . 1 0 1 . 1 0 0 . 1 8mA IR2 IR1 FILTER BANDWIDTH 0 100kHz 0 150kHz 1 200kHz 1 0 1 0 1 NOT USED CL4 CL3 CL2 CL1 CLKOUT DIVIDE RATIO 0 OFF 0 0 . . . 1 0 1 0 . . . 1 2 4 . . . 0 0 1 . . . 1 0 0 0 . . . 1 30 VCO BIAS CLOCKOUT DIVIDE ADDRESS BITS R COUNTER Figure 27. Notes: 1. Set the VCO adjust bits (R1_DB(20:21) to 0 for normal operation. 2. ) 2 ( 15 -N Fractional Integer-N R XTAL F OUT + × = . |
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