A 65nm CMOS DCXO system for generating 38.4MHz and a real time clock from a single crystal in 0.09mm<sup>2</sup>


An integrated digitally-controlled crystal oscillator (DCXO) is presented that generates both 38.4 MHz and also a 32.768 kHz real time clock (RTC) from a single 38.4 MHz crystal. The DCXO can startup independently and transition seamlessly in and out of software control. The tuning range is 280 ppm with 2 ppb/step and guaranteed monotonicity. The phase… (More)


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