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AX5031 Datasheet(PDF) 13 Page - ON Semiconductor |
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AX5031 Datasheet(HTML) 13 Page - ON Semiconductor |
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13 / 36 page  Specifications www.onsemi.com AX5031 13 RF Frequency Generation Subsystem (Synthesizer) SYMBOL DESCRIPTION CONDITION MIN. TYP. MAX. UNIT fREF Reference frequency Note 1 16, 24 MHz frange_hi Frequency range BANDSEL=0 800 940 MHz frange_low BANDSEL=1 400 470 fRESO Frequency resolution 1 Hz BW1 Synthesizer loop bandwidth Loop filter configuration: FLT=01 Charge pump current: PLLCPI=010 100 kHz BW2 Loop filter configuration: FLT=01 Charge pump current: PLLCPI=001 50 BW3 Loop filter configuration: FLT=11 Charge pump current: PLLCPI=010 200 BW4 Loop filter configuration: FLT=10 Charge pump current: PLLCPI=010 500 Tset1 Synthesizer settling time for 1MHz step Loop filter configuration: FLT=01 Charge pump current: PLLCPI=010 15 μs Tset2 Loop filter configuration: FLT=01 Charge pump current: PLLCPI=001 30 Tset3 Loop filter configuration: FLT=11 Charge pump current: PLLCPI=010 7 Tset4 Loop filter configuration: FLT=10 Charge pump current: PLLCPI=010 3 Tstart1 Synthesizer start-up time if crystal oscillator and reference are running Loop filter configuration: FLT=01 Charge pump current: PLLCPI=010 25 μs Tstart2 Loop filter configuration: FLT=01 Charge pump current: PLLCPI=001 50 Tstart3 Loop filter configuration: FLT=11 Charge pump current: PLLCPI=010 12 Tstart4 Loop filter configuration: FLT=10 Charge pump current: PLLCPI=010 5 PN8681 Synthesizer phase noise Loop filter configuration: FLT=01 Charge pump current: PLLCPI=010 868 MHz, 50 kHz from carrier -85 dBc/Hz 868 MHz, 100 kHz from carrier -90 868 MHz, 300 kHz from carrier -100 868 MHz, 2 MHz from carrier -110 PN4331 433 MHz, 50 kHz from carrier -90 433 MHz, 100 kHz from carrier -95 433 MHz, 300 kHz from carrier -105 433 MHz, 2 MHz from carrier -115 PN8682 Synthesizer phase noise Loop filter configuration: FLT=01 Charge pump current: PLLCPI=001 868 MHz, 50 kHz from carrier -80 dBc/Hz 868 MHz, 100 kHz from carrier -90 868 MHz, 300 kHz from carrier -105 868 MHz, 2 MHz from carrier -115 PN4332 433 MHz, 50 kHz from carrier -90 433 MHz, 100 kHz from carrier -95 433 MHz, 300 kHz from carrier -110 433 MHz, 2 MHz from carrier -122 Notes: 1. ASK, PSK and 1-200 kbps FSK with 16 MHz crystal, 200-350 kbps FSK with 24 MHz crystal |
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