CDCS502PW

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CDCS502PW is a precision low-phase-noise voltage-controlled clock synthesizer IC that offers a general-purpose clock generator, Phase-Locked Loop (PLL), or yield frequency synthesizer for timing and synchronization applications. The device is ideal for communications, test and measurement, and switching applications.

At the heart of the CDCS502PW is an on-chip precision voltage-controlled oscillator (VCO) that enables frequency adjustments over a programmable range. The oscillator frequency is controlled by a 10-bit DAC and 8-bit tunable fractional-N frequency prescaler. The device supports a nominal input frequency range of 370–795 MHz, and output frequency ranges of up to 28.8GHz, depending on the external components. The VCO output power is individually adjustable for both the core VCO and the reference VCO.

The device includes a Multi-input-MUX (MIMUX) and a range of features that support parallel, serial, dual-port, and PECL/LVDS (charge-pump) patterns. The control logic provides two dedicated control interfaces for the device, allowing for remote or local control. An internal reference clock is provided which is sourced from the VCO through a second PLL for improved phase noise performance. The device also features two differential output clocks, DOUT1 and DOUT2, one of which can be used for frequency synthesis.

The CDCS502PW has an integrated PLL that includes an on-chip loop filter and a selectable PLL bandwidth. The PLL supports a wide range of loop frequencies and lock ranges. The PLL loop filter is selectable with a choice of slow, medium, or fast modes, and it can be fine-tuned with a digital pot. The device also has an integrated digital-analog lock detect that provides a lock-status output when the PLL is locked.

The device includes an on-chip temperature sensors which can be used to monitor and adjust the device characteristics. The device is also equipped with a power sequencer that provides power sequencing and sequencing control for the VCO, PLL, and DAC to ensure proper operation under all operating conditions.

The CDCS502PW provides a variety of clock outputs for multiple applications. The device supports single-ended LVDS, differential LVDS, analog differential outputs, and multi-mode I2S. The differential outputs are provided for improved clock synchronization in applications requiring multiple clock sources. It also has a programmable polarity output that enables the device to be used as a master clock source.

The device is easily programmed via the simple user interface and easy-to-use GUI. It includes an on-chip voltage regulator that can be used to adjust the VCO output to match the optimal frequency. It also includes an on-chip SPI interface that enables programming of the device using an external processor.

The CDCS502PW is a low-phase-noise, low-jitter, frequency-synthesizer IC that can be used as a frequency synthesizer, a clock generator, or a PLL to provide a highly accurate and stable clock signal. Its wide frequency support, adjustable power settings, integrated temperature sensor, and selectable PLL bandwidth, make the CDCS502PW an ideal solution for any application where low-noise, highly stable clock signals are required.

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