SY100E222LTI-TR

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A SY100E222LTI-TR is a Phase-Locked Loop (PLL) integrated circuit designed for use in advanced clock generator, frequency synthesizer and frequency modulator design applications. The PLL circuit is designed to produce a clock signal from a reference external frequency clock and harmonized with the feedback signal from the on-chip divider. The external clock is divided down and compared with the feedback signal on-chip. The on-chip voltage-controlled-oscillator (VCO) is adjusted appropriately before being output as the synthesized clock waveform.

The SY100E222LTI-TR is capable of producing clock waveforms up to 500MHz and is fully configurable using either an I2C or SPI interface. It includes on-chip phase-lock-loop (PLL) and fractional-N frequency synthesizer (Fractional-N synthesizer) circuitry and can be used in direct sequence spread spectrum (DSSS) technology applications. The onboard Synchronous Digital-to-Analog Converter (SDAC) control functionality provides for easy control of the PLL loop tuning parameters over temperature and process.

The SY100E222LTI-TR device also includes an on-chip voltage regulator, allowing for up to 20mA of output current at 2.5V from a single 3.3V power supply. The on-chip amplifier and dividers provide for a wide variety of output clock waveforms. Additionally, a built-in programmable output power-down function allows for the further power saving. The output clock waveforms can also be used in duty cycle modulation and ADSL applications.

Overall, the SY100E222LTI-TR is an advanced clock generator, frequency synthesizer and frequency modulator integrated circuit that offers a reliable and cost effective solution for many digital and analog designs. By allowing for quick and easy control of the PLL loop tuning parameters, the device not only makes the design process easier but also helps insure that the final product works reliably over a wide range of temperatures and manufacturing processes. Thanks to the availability of programmable power-down function and the built-in voltage regulation circuitry, the SY100E222LTI-TR is also able to deliver significant power savings.

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