SI5345A-A-GMR

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The SI5345A-A-GMR is a clock generator, phase-locked loop (PLL) and frequency synthesizer from Silicon Laboratories that is part of the family of third-generation, multi-function ClockBuilder Pro devices. This device is intended for applications requiring ultimate frequency selectivity, accuracy, and control optimization. It is most commonly used for precision synchronous communication systems and high-channel-count data networks.

The SI5345A-A-GMR is a highly integrated, single chip, programmable PLL designed to generate clocks of any frequency up to 1700 MHz using an external reference oscillator. It is generated using a low-skew, differential output pair, which supports both single-ended and differential clocks. The device features an integrated voltage-controlled oscillator (VCO) that can be configured to swing up to 5 V, and the integrated VCO and loop filter enable fast settling times and lock detect capabilities.

The clock generator utilizes a dual-loop architecture and a wide loop bandwidth to enable high-speed synthesizing and jitter cleanup. The integrated fractional-N PLL synthesizes output clocks with minimized jitter and spurs, making it well-suited for GPS, 3G/4G/WiFi/LTE, SATCOM, broadcast video, automotive audio, video, and Ethernet Protocols. It supports double-data-rate (DDR) memory clocking, as well as data acquisition and high-speed data conversion solutions.

The SI5345A-A-GMR helps reduce system complexity and board area compared to traditional clock designs. The integrated functions provide improved system performance, while eliminating the need for additional components. The device is highly parallel and is programmable through an SPI or I2C interface. It is fabricated with a small 3x3-mm leadless QFN28 package for ease of integration.

The SI5345A-A-GMR is a versatile, precision timekeeping solution for a wide variety of precise, high frequency applications. It offers a range of output frequency options, precise timekeeping and jitter cleanup, and a highly integrated design to create a desirable system with minimal space. This device combines precision and high signal quality with a wide frequency range and low power consumption, making it ideal for a variety of precise, high frequency applications.

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