LMK04808BISQE/NOPB

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The LMK04808BISQE/NOPB is a high-performance jitter cleaner and clock synthesizer designed to system clock generation and jitter attenuation applications. It is clock/timing device that is optimized for low jitter performance in broadcast, production, and post-production applications. This jitter cleaner/clock synthesizers is an integrated, low-jitter Clock Multiplier Unit (CMU) and clock fan-out buffer.

The device is a very small 32-pin, 4 mm × 4 mm QFN package has two features potential users should consider. It spins of single-ended crystal oscillators and can clean up the signal with the jitter attenuation. There are use-cases in which the LMK04808BISQE is useful for generating clean, low-jitter clocks for a large number of devices.

The device has an integrated Volterra™-based clock multiplier unit (CMU) that multiplies the incoming signal into an array of high-quality clocks. This CMU provides a low-jitter, sinusoidal output clock from an input frequency of up to 200 MHz. It also includes three fan-out buffers to distribute the clocks to multiple destination devices. This allows for multiple destinations to be clocked from a single input signal.

The device is capable of converting a wide range of frequencies simultaneously, such as audio sample rates, industry-standard video rates, or non-standard rates with adjustable frequencies. The CMU operates at a wide range of input frequencies, including frequencies up to 200 MHz, and is capable of generating high-quality frequencies up to 2 GHz—all with low jitter. The jitter can be further reduced by the Jitter Attenuator and SSC (Spread-Spectrum Clocking) blocks, both of which use proprietary algorithms to attenuate the jitter on the input frequency. In addition to the Jitter Attenuator and SSC blocks, the LMK04808BISQE has a Lock Detector and a Lock Detector Output circuit that can generate a digital logic output when the device has achieved a locked frequency.

The device also includes several configurable power-down modes that allow for optimal power consumption. The power-down modes can be enabled for either the CMU, fan-out buffer, or both. Depending on the user\'s application, the power-down state can be configured for optimal power consumption.

The LMK04808BISQE/NOPB is easy to use and configure. The device is controlled by an I2C interface, which can be configured to support 2-wire or 4-wire interface modes. This allows for easy integration into existing control systems or can be used in embedded systems environments. Lastly, the device comes with an evaluation board that has all the components, such as crystals, connectors, and other components required for building a working system.

The LMK04808BISQE/NOPB is a great choice for broadcast, production, and post-production applications that require a low-jitter, high-quality clock. The integrated clock multiplier unit provides a low-jitter, sinusoidal output clock up to 200 MHz, with power-down modes, jitter attenuation, and lock detectors. The integrated fan-out buffers provide a convenient way to distribute the clocks to multiple destination devices. Finally, the device is easily integrated into existing control systems and can be configured to support 2 or 4-wire interface modes. Overall, this device is an ideal solution for applications that rely on highly accurate and low-jitter clocks.

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