The LTC6903IMS8#PBF is a serial-port Programmable Oscillator for use with precision digitally controlled oscillator. The low-power self-contained digital frequency sources providing a precision frequency from 1kHz to 68MHz, set through a serial port. It requires no external components other than a power supply bypass capacitor and they operate over a single wide supply range of 2.7 to 5.5V. It features a proprietary feedback loop that liberalizes the relationship between digital control setting and frequency. It is controlled by a convenient SPI compatible serial interface.