ICS308RT

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The ICS308RT chip is a low-power CMOS clock/timing device that is typically used in clock generators, PLLs, and frequency synthesizers. It is designed to generate a wide array of frequencies from 1 Hz to 1 GHz and can be programmed to adjust the frequency slightly for improved jitter performance.

The ICS308RT is composed of two sections, a phase-frequency detector (PFD) and a charge pump (CP). The PFD determines the frequency ratio of the input signal to the output signal. The CP filters and amplifies the signal from the PFD and uses it to control the voltage-controlled oscillator (VCO). The amplitude of the output signal is controlled by the bias current of the CP.

The ICS308RT can operate in either a free-running or locked state. In free-running mode, the ICS308RT will continuously generate an output signal based on the frequency ratio set by the PFD. It also supports phase-lock loop (PLL) operation, where the output frequency is equal to the frequency of the reference signal multiplied by its fractional division ratio.

The frequency synthesizer on the ICS308RT can be programmed with a fixed frequency ratio or a programmable frequency ratio. A fixed frequency ratio can be used in applications that require a fixed output frequency. A programmable frequency ratio is ideal for applications that require a frequency range that varies over time.

The ICS308RT also supports a variety of clock outputs, including TTL, CMOS, LVPECL, LVDS, and HCSL. The ICS308RT has programmable skew of up to 30ns between separate output clocks, allowing it to be used in applications that require multiple outputs with tight phase synchronization.

The ICS308RT is used in a wide range of applications, including network infrastructure, industrial automation, telecommunications, automotive, and consumer electronics. The ease of use and flexibility of the ICS308RT make it ideal for today’s ever-evolving higher-speed and higher-power-consumption applications.

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