LTC6948IUFD-3#PBF

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The LTC6948IUFD-3#PBF is a low-noise clock generator and frequency synthesizer designed to provide high performance, reliable clock and frequency synthesizing solution in one integrated circuit. This versatile device provides a wide range of frequency synthesizer applications from medical, military and commercial markets. Because of its on-chip variation capabilities, the LTC6948IUFD-3#PBF is one of the most flexible clock synthesizers on the market.

The LTC6948IUFD-3#PBF is a highly integrated two loop PLL with voltage-controlled oscillator (VCO) and frequency synthesizer comprising a programmable divider and a loop filter. The device has a low-noise clock generator, low-noise VCO and low-noise reference buffer which enable it to provide superior performance in comparison to conventional discrete clock synthesizers. Its programs divider has a wide output frequency range of up to 200MHz and its high-accuracy reference buffer allows for range expansion with limited external components.

The programmable divider and fast settling time of LTC6948IUFD-3#PBF greatly simplifies system design in applications with multi-frequency operation. Its low area requirement, low power consumption and high-frequency flexibility make it suitable for wireless, digital and broadcast communication systems, portable audio and video systems, and general-purpose frequency-data converters.

The main features of LTC6948IUFD-3#PBF include a programmable divider with a fast settling time, a wide output frequency range, low-noise clock generator and VCO, low-noise reference buffer, fast frequency switching and excellent phase noise performance. Moreover, its low power consumption and temperature stability allows for excellent temperature performance making it suitable for operation in harsh temperature environments.

The LTC6948IUFD-3#PBF features a programmable divider which allows for independent adjustment of the output frequency range by setting the output frequency in MHz increments, or as a function of the system clock. This enables the user to use the device in all different frequency ranges. Additionally, its frequency synthesizer, clock generator and VCO can be programmed and updated via a fast serial port using I2C, SPI, or UART commands.

The working principle of the LTC6948IUFD-3#PBF is based on the phase-locked loop (PLL) principle. The device includes two loops - a frequency loop and a phase loop. The frequency loop is used to synchronize the reference and the output frequencies, while the phase loop is used to synchronize the output phased. The phase-locked loop generates the output frequency by synchronizing the oscillations of the VCO with the reference signal. The reference signal is divided evenly by the divider and compared with the output of the VCO. If the output of the VCO is not equal to the reference signal, the phase-locked loop will adjust the output of the VCO until the two signals are equal.

The LTC6948IUFD-3#PBF offers a wide range of clock generator and frequency synthesizer applications, such as medical and military applications, digital and broadcast communication systems, portable audio and video systems, and general-purpose frequency-data converters. Its low-noise clock generator, low-noise reference buffer, and wide frequency range provide superior performance in comparison to discrete clock synthesizers. Additionally, its programmable divider and fast settling time provide users with the flexibility to use the device in multi-frequency operations.

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