The LTC®6903/LTC6904 are low power self contained digitalfrequency sources providing a precision frequency from1kHz to 68MHz, set through a serial port. The LTC6903/LTC6904 require no external components other than apower supply bypass capacitor, and they operate over asingle wide supply range of 2.7V to 5.5V.The LTC6903/LTC6904 feature a proprietary feedback loopthat linearizes the relationship between digital control settingand frequency, resulting in a very simple frequencysetting equation:
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