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TRF1221 Datasheet(PDF) 5 Page - Texas Instruments |
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TRF1221 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 26 page  www.ti.com SYNTHESIZER #1 (UHF-BAND PLL) CHARACTERISTICS SYNTHESIZER #2 (S-BAND PLL) CHARACTERISTICS TRF1121 TRF1221 SLWS170A – APRIL 2005 – REVISED DECEMBER 2005 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fRef Reference frequency See Table 7 18 MHz fVCO1 Frequency TRF1121 and TRF1221 250 350 MHz £FRVCO1 Free running VO1 SSB phase noise at 100 kHz –115 dBc/Hz £LD LO1 Locked synthesizer 1 SSB phase noise at 10 kHz –115 dBc/Hz £LD LO1 Locked synthesizer 1 SSB phase noise at 100 kHz –115 dBc/Hz fLD LO1 Locked synthesizer 1 integrated RMS phase noise 100 Hz to 1 MHz 0.2 deg MSLO1 Tuning sensitivity For VLO1TUN > 2 V 30 60 MHz/V TRF1121, 18-MHz reference input 50 ∆f LO1 Step Size kHz TRF1221, 18-MHz reference input 62.5 RRS LO1 Reference spur rejection –70 dBc RFS LO1 Fractional spurs rejection -60 dBc PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fRef Reference frequency See Table 7 18 MHz TRF1121 1500 2100 fLO2A Output frequency, VCO#2A MHz TRF1221 1700 2450 TRF1121 1700 2500 fLO2B Output frequency, VCO#2B MHz TRF1221 2400 3600 TRF1121 For VLO1TUN >2 V 150 350 MSLO2A Tuning sensitivity, VCO#2A MHz/V TRF1221 For VLO1TUN >2 V 200 400 TRF1121 For VLO1TUN >2 V 200 400 MSLO2B Tuning sensitivity, VCO#2B MHz/V TRF1221 For VLO1TUN >2 V 350 550 ∆f LO2 Step size For 18-MHz ref input 1 MHz Measured into a 100- Ω differential load at the PLO2 Output power level -3 dBm LO1OP/N port Measured into a 100- Ω differential load at the £FR VCO2 Free running SSB phase noise at 100 kHz –100 dBc/Hz LO1OP/N port Locked synthesizer SSB phase noise – 102 –97 Measured into a 100- Ω differential load at the at 10 kHz £LD LO2 LO2OP/N port with loop filter set to 400 kHz dBc/Hz Locked synthesizer SSB phase noise at nominal –100 –95 100 kHz φ LD LO2 Integrated RMS phase noise Locked, 100 Hz to 1 MHz 0.5 1 Deg Measured into a 100- Ω differential load at the RRS LO2 Reference sideband suppression LO1OP/N port. PLL loop bandwidth –65 –60 dBc ~ 400 kHz At 1 MHz offset (Loop BW ~400 kHz) –50 –45 RFS LO2 Fractional spur suppression At 2 MHz offset (Loop BW ~400 kHz) –65 –60 dBc All others –70 –70 Measured into a 100- Ω differential load at the RH LO2 Harmonics suppression –20 dBc LO1OP/N port Measured into a 100- Ω differential load at the RLLO2 Output return loss –11 –16 dB LO1OP/N port PextVCO Ext VCO input power –13 dBm RLextVCO Ext VCO port input ret. loss Differential mode –10 –15 dB Zin extVCO Ext VCO port input impedance Differential mode 100 Ω 5 |
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