SI52111-B3-GM2

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The SI52111-B3-GM2 is a highly-integrated clock and data recovery (CDR) device designed for emerging wireline and optical applications. The device provides a single, low-jitter reference clock from any AC-coupled, continuous-wave (CW) optical or electrical input signal within the frequency range of 4.268 to 4.554GHz. In addition to providing a low-jitter reference clock, the device also features a wide selection of timing outputs, allowing it to function as a multiphase clock generator or as a clock multiplier. Applications that would benefit from the SI52111-B3-GM2 include Ethernet and Audio/Video-over-IP video, Mobile WiMAX systems, Wireless LAN, CATV systems and inter-processor communications.

The SI52111-B3-GM2 clocks and data recovery device includes dedicated circuitry composed of: two high-speed, high-sensitivity, differential input channels, 5-bit phase interpolator with selectable bandwidth, a wideband digital frequency synthesizer, flexible digital phase detection and control system, digital loop filter, low-latency rate-converter and a wide variety of timing outputs. The device also incorporates multiple internal power supply regulators as well as integrated shielded inductors for noise immunity. The device is capable of meeting the stringent requirements for clock recovery in optical applications and is suitable for both highly reliable and mobile applications.

The SI52111-B3-GM2 operates by converting the input CW optical or electrical signal into a digital signal. The 5-bit phase interpolator with selectable bandwidth then converts the digital signal into a high-resolution phase waveform. The phase waveform is then passed through the digital phase detection and control system, which analyzes the phase waveform and determines the phase difference between the incoming waveform and the phase detector. The rate-converter then converts the incoming waveform to the required output frequency. Finally, the low-latency rate converter output is passed to the wide variety of timing outputs.

The wide variety of timing outputs provided by the SI52111-B3-GM2 make it suitable for a large number of applications. The device is capable of providing a low-jitter reference clock from any AC-coupled continuous-wave (CW) optical or electrical input signal, making it ideal for Ethernet and Audio/Video-over-IP applications. It also provides an output for applications such as Mobile WiMAX systems, Wireless LAN, and CATV systems. The device’s integrated shielded inductors and multiple internal power supply regulators provide enhanced noise immunity for applications such as inter-processor communications.

In summary, the SI52111-B3-GM2 is a highly-integrated clock and data recovery device designed for embedded systems, wireline, and optical applications. Applications that would benefit from the device include Ethernet and Audio/Video-over-IP video, Mobile WiMAX systems, Wireless LAN, CATV systems and inter-processor communications. The device features dedicated circuitry including two high-speed, high-sensitivity, differential input channels, a wideband digital frequency synthesizer, a flexible digital phase detection and control system, a digital loop filter, and a low-latency rate-converter. In addition, the device also features a variety of timing outputs and an integrated shielded inductor for noise immunity. The device is suitable for reliable and mobile applications that require a low-jitter reference clock from any AC-coupled, continuous-wave (CW) optical or electrical input signal.

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