ADF4355-2BCPZ-RL7

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The ADF4355-2BCPZ-RL7 is an integrated PLL generator/synthesizer designed for radio frequencies, suitable for military and commercial communication applications. It has a wide range of frequency synthesizers and clock generators, backed by its wide tuning range from 28 MHz to 6.6 GHz. It is also ideal for applications requiring the use of high quality and low jitter-generation clock signals, offering low phase noise and fast settling times of just 10μs.

The ADF4355-2BCPZ-RL7 chip is enclosed in a 7-pin plastic leaded chip carrier (PLCC) and is primarily composed of an analog phase-locked loop (PLL) along with a digital logic section. An external loop filter as well as an external reference oscillator are required to operate efficiently.

The PLL of the ADF4355-2BCPZ-RL7 is composed of several components, such as a phase/frequency detector (PFD), a charge pump (CP), and a voltage-controlled oscillator (VCO). The phase/frequency detector produces a signal to the charge pump depending on the relative phase between the reference signal and the loop signal. The output of the charge pump is then fed to the loop filter, which determines the loop characteristics. The filtered output is then applied to the VCO, which is then frequency-modulated.

The logic section, which is also key for the successful operation of the adf4355-2BCPZ-RL7, is responsible for the divergence of the PLL parameters, such as the output frequency, charge-pump current, and loop bandwidth to the PLL block. It also contains a 3-bit prescaler, which allows easy selection of the desired frequency.

Due to its simple programming operation, its wide frequency range and its fast settling time, the ADF4355-2BCPZ-RL7 is ideal for a variety of applications, such as frequency synthesizers, microwave radios, radar systems, automatic test equipment, and satellite communications systems. When paired with a low jitter reference signal and an external loop filter, this PLL is capable of providing an output signal with a low phase noise and fast settling time.

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