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VOLTAGE-CONTROLLED OSCILLATOR GAIN CALIBRATION FOR TWO-POINT MODULATION IN A PHASE-LOCKED LOOP
VOLTAGE-CONTROLLED OSCILLATOR GAIN CALIBRATION FOR TWO-POINT MODULATION IN A PHASE-LOCKED LOOP
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机译:锁相环中两点调制的电压控制振荡器增益校准
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摘要
A phase-locked loop (PLL) is arranged to receive high-pass data at a first input and low-pass data at a second input. A first digital input is coupled to a primary path through a digital-to-analog converter (DAC) and a second digital input is coupled to a feedback path of the PLL. The controller provides the first input and the second input during a calibration procedure. The controller adjusts first and second control inputs in an attempt to keep the input voltage to a voltage-controlled oscillator (VCO) in the PLL constant while determining the gain of the VCO in Hz/LSB.
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