MK2308S-1HI

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MK2308S-1HI is a Clock/Timing - Clock Generators, PLLs, and Frequency Synthesizers. It offers dedicated low-cost synthesizer solutions to low-frequency and wideband (UWB) applications. MK2308S-1HI provides a multifunctional clock, including frequency synthesis, phase lock control, and spread spectrum modulation modes.

Features

MK2308S-1HI is a highly integrated, low jitter solution for frequency synthesis. It offers on-chip programmable frequency reference, low power CMOS process, and low operating temperature ranges from –25°C to +85°C. It can be programmed using the on-board serial interface or external clock sources. Additionally, it is capable of taking an input frequency of up to 1.25GHz and has a programmable way of output frequency up to 500MHz.

Applications

The MK2308S-1HI is designed for a wide range of applications, including:

• Wireless local area networks (WLAN)
• Mobile broadband (LTE)
• Wireless personal area networks (WPAN)
• Digital television (DTV)
• Clock signals for servers and memory modules
• Satellite broadcasting

Working Principle

The MK2308S-1HI works with a voltage controlled oscillator (VCO). It will use the external reference input to generate a stable and accurate output frequency. The VCO output is then compared with an external reference frequency in a phase detector. The output of the phase detector is fed to a loop filter, where the low and high frequency are selected and removed, leaving only the desired frequency. The output of the loop filter is then fed to the control voltage input of the VCO. This will cause the VCO frequency to change according to the control voltage, in order to match the reference frequency. When the two frequencies are equal, the phase lock loop is engaged and the output frequency is maintained.

The MK2308S-1HI is designed for low drive current and low phase noise applications, which makes it ideal for high frequency applications. It is also capable of working with clock frequencies up to 200MHz and frequency accuracy of up to 0.25ppm. It also provides a spread spectrum modulation mode for improved EMI and EMC performance. Additionally, it provides a variety of output types like LVCMOS, LVDS, and 1.8VPP, making it suitable for different application needs.

Conclusion

The MK2308S-1HI utilizes a phase lock loop (PLL) technique to provide a low jitter frequency reference. It features a wide frequency range, low phase noise and drive current, and spread spectrum modulating capability to ensure EMI and EMC compliance. This makes it suitable for various applications such as WLAN, LTE, etc. With these features, the MK2308S-1HI is an ideal frequency synthesizer for low-frequency and wideband (UWB) applications..

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