849N202CKI-001LF

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849N202CKI-001LF clock generator is an advanced and highly integrated frequency synthesizer module designed for DSL home gateway and digital video recorder applications. This device integrates two high-performance PLLs, two high-accuracy reference clocks, an integrated voltage-controlled oscillator (VCO), and an on-chip loop filter for easy and efficient system application.

In addition to its basic clock generator and frequency synthesizer functions, it also offers dynamic power saving for lower power consumption. This clock generator supports a variety of frequency synthesizers, including synthetic clocks from 13 MHz to 60 Mbps, as well as an optimized design for RF applications. It offers high accuracy, low voltage operation and wide temperature range support. The internal loop filter design gives superior jitter reduction.

The 849N202CKI-001LF clock generator is mainly used in applications such as DSL home gateways, digital video recorders, SOHO/SMB routers, set-top boxes and video streaming routers. The following is a brief explanation of the salient features of this device.

The 849N202CKI-001LF is based on a dual PLL architecture which allows for independent frequency synthesizer and clock generator outputs. Its integrated high-accuracy reference clock generator can support many different types of output clocks, such as digital audio clock (DOC), reference clock (RC), a high-accuracy reference clock (HARC), and a low-jitter internal reference clock (RCLK). All of these clocks have separate output signals and can be independently controlled.

The device also contains an integrated voltage-controlled oscillator (VCO). This enables the user to program the desired start frequency, stop frequency, and output frequency range into the device as parameters. The VCO is also capable of wide frequency output range for applications such as DOC and HARC applications. The integrated loop filter further improves the output signal accuracy and jitter performance. Moreover, the device comes with an external loop filter option for users who are looking for improved signal performance.

In terms of power saving, the 849N202CKI-001LF offers an ‘Active/Idle’ mode which allows the clock generator and PLL to enter different modes when idle. This mode allows the PLL to remain active and the clock generator to enter a low power consumption idle mode. The device also employs a dynamic power save function and supports a wide temperature range. Additionally, the device uses a dedicated power domain to reduce power consumption when the clock generator is idle.

In conclusion, the 849N202CKI-001LF is an advanced and integrated frequency synthesizer module, designed for DSL home gateways and digital video recorders. It is based on a dual PLL architecture with independent frequency synthesizer and clock generator output, and features an integrated voltage-controlled oscillator (VCO), an integrated loop filter, and an external loop filter option. Furthermore, the power savings offered by this clock generator make it an ideal choice for applications requiring low-power consumption.

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