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Introduction

The LMK61E2BBA-SIAT is an ultra low jitter and low phase noise clock/timing generator from IDT (Integrated Device Technology, Inc.). This device is primarily used for a range of timing control and clock generation applications, from industrial, networking and communications applications to mission critical base station clocks and SONET/SDH applications.

This particular device features an integrated voltage-controlled oscillator (VCO), capable of frequencies ranging from 500 Hz to 6.2 GHz with pre-programmed centre frequencies and up to +/-3 ppm resolution. This device also features frequency select pins and a fine frequency adjust pin to provide additional fine frequency tuning.

Application Field

The LMK61E2BBA-SIAT is used in a number of different application fields. These include:

• Industrial applications: calibration, testing, and fault detection in automotive, defense, aerospace and telecommunications.
• Networking and Communications: Ethernet, SONET/SDH, Fibre Channel and WDM communications.
• Mission critical base station clocks: high performance and synchronization requirements in cellular and wireless infrastructure applications.
• Programmable Timers and Oscillators: this device can be used as a versatile timing circuit generator and can be used to generate fixed and adjustable frequency clocks.

Working Principle

The LMK61E2BBA-SIAT is designed to provide highly precise frequency and phase control with minimal jitter and phase noise over a wide frequency range. It utilizes a dual-phase digital feedback loop design which is capable of incorporating a wide range of frequencies and stability performance.

The device incorporates both a digitally controlled voltage-controlled oscillator (VCO) and a digital phase-locked loop (DPLL) to provide highly precise frequency and phase control. The VCO produces a precise oscillating signal of adjustable frequency and variation, whilst the DPLL performs a comparison between the reference clock signal and the VCO\'s output in order to maintain precise frequency and phase stability.

The LMK61E2BBA-SIAT also incorporates a temperature-compensated crystal oscillator (TCXO) which provides precise frequency stability across temperature. This feature also provides significant an improvement in system accuracy and confidence in performance.

Conclusion

In conclusion, the LMK61E2BBA-SIAT is a versatile and high performance clock/timing generator designed for a range of applications. With its low jitter and low phase noise capabilities, this device is ideal for applications requiring precise frequency and phase control. It is an ideal solution for applications such as industrial, networking and communications, mission critical base station clocks, and programmable timers and oscillators.

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