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TRF372017 Integrated IQ Modulator - PLL/VCO VCO Lock Time

TRF372017 Integrated IQ Modulator - PLL/VCO VCO Lock Time. High Speed Products November 2011. Experimental Setup. Equipment Refclk source Agilent E4438C SN MY42080357 Cal 05-25-2011 Transient measurement Agilent E5052A SN MU44100151 Cal 01-20-2011 Trigger external from SPI pin LE

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TRF372017 Integrated IQ Modulator - PLL/VCO VCO Lock Time

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  1. TRF372017Integrated IQ Modulator - PLL/VCOVCO Lock Time High Speed Products November 2011

  2. Experimental Setup • Equipment • Refclk source • Agilent E4438C SN MY42080357 Cal 05-25-2011 • Transient measurement • Agilent E5052A SN MU44100151 Cal 01-20-2011 • Trigger external from SPI pin LE • 10MHz sync • TRF372017 EVM board • Fractional mode • 30.72MHz pfd & loop filter (2200pF, 22000pF, 220pF, 475W) • Calibration not included • Analytic solution described in datasheet

  3. Experimental Setup

  4. RF Step 4MHz • 21us analog lock time

  5. RF Step 43MHz • 75us analog lock time

  6. VCO Step: VCO1 to VCO0 • 163us analog lock time • 680MHz step size

  7. PLL Restart • PWD_PLL: 200us analog lock time, worst case • PWD_CP: 36us • PWD_VCO: 163us • PWD_VCOMUX: 80us • PWD_DIV124: 130us, worst case • PWD_PRESC: 132us, worst case

  8. LO Buffer • PWD_OUT_BUFF: 1us • PWD_LO_DIV: 127us

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