LMX2370SLDX

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LMX2370SLDX is a high performance, low power, spread-spectrum frequency synthesizer primarily designed to operate up to 2200 MHz. This synthesizer is generally used to increase accuracy, reduce errors, and improve operation in applications such as high speed data and telecom systems. The low power operation allows better battery life, which makes it suitable for portable applications.

LMX2370SLDX operates in either a high-frequency mode or a low-frequency mode on the same clock input. Depending upon the frequency, it uses a PLL (Phase Locked Loop) with either a DDS (Direct Digital Synthesis) or a VCO (Voltage Controlled Oscillator) as the main clock generator. The PLL uses an external reference clock to generate a set of output signals at frequencies that can be varied over a large range.

The PLL consists of a reference oscillator input, a VCO (Voltage Controlled Oscillator), and a feedback loop that adjusts a divider ratio. The divider ratio is adjusted to make the output frequency match a selected reference frequency. The output of the PLL is a swept or synthesized output frequency which has constant stability over the entire operating temperature range.

LMX2370SLDX has both high frequency operation up to 2200 MHz and low frequency operation up to 120 MHz. The high frequency operation has a frequency range from 1.3 GHz to 2200 MHz and uses a DDS to generate the clock signal. Depending upon the output frequency, the DDS can generate a variety of output signals such as square waves and sine waves. The DDS is programmable and can be used to generate multiple frequency and phase offsets.

The low frequency operation has a frequency range from 500 kHz up to 120 MHz and uses a VCO to generate the clock signal. The VCO can generate multiple output frequencies over the range of 500 kHz to 120 MHz with an excellent spectral purity. The VCO also has a wide range of adjustability, allowing it to be used in various applications. The outputs of the VCO are accurate and have a high degree of stability.

The LMX2370SLDX also has a spread-spectrum function which is used to reduce the electromagnetic interference (EMI) caused by RF signals. The spread-spectrum function is designed to reduce the peak amplitude of the signal and reduce the generation of spurius emissions. This helps to reduce the electromagnetic interference in the vicinity of the device and allows it to operate within the regulatory requirements.

In addition, the LMX2370SLDX also has an integration feature which is used to reduce the jitter on the output signals. This helps to reduce the phase noise generated by the device and improve the signal integrity. The integration feature is used to shape the noise bandwidth, reduce phase errors, and increase the output signal\'s accuracy over the range of frequencies.

In conclusion, the LMX2370SLDX is a low power, high performance spread-spectrum frequency synthesizer designed to operate up to 2200MHz. It is suitable for a variety of applications such as high speed data and telecom systems, and it has the ability to reduce the EMI generated by the device through the spread-spectrum function. In addition, the integration feature helps to reduce the jitter and phase noise on the output signals.

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