LMX2492RTWT

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The LMX2492RTWT is a high-performance clock generator and frequency synthesizer for both elevated frequency and very high stability output clocks. Specifically designed for radio frequency applications the device provides frequency and synth attributes that are particularly suited to applications such as WLAN, WiMax, and cellular base station applications – where miniaturization, cost, and reliability are of paramount importance. The LMX2492RTWT also includes an array of features such as programmable skew and a wide frequency output range that makes it suitable for a variety of other applications as well.

Unique Features

The LMX2492RTWT offers the ability to select a wide range of operating frequencies and output options. It provides a low-cost, small footprint solution to clock generation, with an adjustable output voltage magnitude, programmable tri-state output control, phase/frequency resolving output clock phase selection and programmable skew. The device also offers a wide range of reference frequencies, which makes it particularly well suited for applications that require precise frequency control.

The device provides precise frequency combining capability, with the ability to combine two outputs for precise frequency scanning applications, as well as three outputs for frequency synthesis applications. Additionally, the device provides an output frequency range of 400 MHz to 8 GHz, enabling a variety of high-bandwidth fractional-N synthesizer designs.

General Overview

The LMX2492RTWT is a high-performance clock generation and frequency synthesizer for both elevated frequency and very high accuracy output clocks. Specifically designed for radio frequency applications, the device provides frequency and synth attributes that are particularly suited to applications such as WLAN, WiMax, and cellular base station applications – where miniaturization, cost, and reliability are of paramount importance. Its frequency range of 400 MHz to 8 GHz makes the device suitable for a variety of applications.

The device provides an adjustable frequency range of 4 to 400 MHz with a 4009X clock output, combined output frequencies of 4 to 8 GHz, and a programmable tri-state output control. Additionally, the device provides an adjustable output voltage magnitude, programmable skew control for maximum system performance, and programmable output clock phase selection for frequency synthesis.

The device is designed using advanced CMOS process technologies, with a low power 3V2 supply voltage, and an adjustable output voltage magnitude of 1.5V. The LMX2492RTWT also has built-in analog temperature compensation that minimizes the need for active components to maintain optimum system performance.

Applications

The LMX2492RTWT is suitable for a variety of applications such as WiMax, WLAN, cellular base station applications, and other RF applications such as point-to-point radios, satellite communications, and airborne navigation systems. The device also offers a wide range of features such as programmable skew and adjustable frequency range, making it well suited for a number of military and space applications.

The device provides an array of features that make it suitable for a variety of applications. The adjustable output voltage magnitude and programmable tri-state output control make it suitable for high-bandwidth fractional-N synthesizer designs. Additionally, the device provides precise frequency combining capability, making it ideal for precise frequency scanning applications.

Working Principle

The LMX2492RTWT provides a low-cost, small footprint solution to clock generation and frequency synthesis with programmable parameters. The device combines the reference clock input (CLKIN) with an internal VCO to generate the output clocks, and uses an internal digital phase frequency detector to control the VCO frequency and stabilize it. The device uses a high-precision analog temperature compensation scheme to compensate for temperature variations, allowing for controlled frequency accuracy throughout the entire operating temperature range.

The device also provides programmable tri-state output control, programmable skew control and programmable output clock phase selection. The device can combine two output clocks for precise frequency scanning applications, or three output clocks for frequency synthesis applications. The device is also able to generate two output clocks with adjustable frequency range, making it suitable for a variety of applications.

Conclusion

The LMX2492RTWT is a high-performance clock generator and frequency synthesizer for both elevated frequencies and very high accuracy output clocks, specifically designed for radio frequency applications. It offers a wide range of features including adjustable output voltage magnitude, programmable tri-state output control, phase/frequency resolving output clock phase selection and programmable skew, making it an ideal solution for many applications. Its wide frequency output range of 400 MHz to 8 GHz makes it well suited for a variety of applications, while its programmable parameters make it suitable for frequency synthesis and precise frequency scanning applications.

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