LMX2330UTM

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The LMX2330UTM is part of Texas Instruments’ clock/timing category, which is focused on high-frequency devices. It is an integrated frequency synthesizer that includes a low-noise voltage-controlled oscillator (VCO), programmable reference input, control logic, a phase detector, and a charge pump. The LMX2330UTM ads a new level of integration and integration to clock/timing component blocks.The LMX2330UTM is used in a variety of applications, including cellular base station transceiver equipment, radio and microwave frequency synthesizers, and test and measurement equipment.The LMX2330UTM synthesizes a wide range of output frequencies and incorporates advanced PLL technology to ensure low phase noise, low spurious signals, low reference spurs and excellent dynamic response.The LMX2330UTM offers the flexibility of two modes of operation, depending on the application requirements. The wide band mode provides the fastest output frequency switching time and can be used in applications where fast frequency changes are needed. The narrow band mode offers lower phase noise and can be used in communications and microwave applications where low phase noise and low spurious signals are critical.The LMX2330UTM utilizes an advanced fractional-N synthesis structure to synthesize a wide range of output frequencies. The Synthesizer is comprised of divide-by-2, 3 and 4 programmable dividers and each individual output frequency is controlled independently by selecting the corresponding output drive levels for the dividers. The reference frequency used can range from 10 MHz to 31 MHz.The LMX2330UTM also includes aphase/frequency detector and a charge pump, as well as a choice of loop filtering options. The on chipphase/frequency detector varies its output charge current based on the difference between the reference frequency and VCO frequency. The output current from the phase/frequency detector is used to control the charge pump, which supplies current to the VCO, thus controlling the VCO frequency. The loop filtering techniques used in the LMX2330UTM enable designers to optimize the PLL loop characteristics.The LMX2330UTM also utilizes a proprietary fractional-N algorithm to ensure fast lock times, low jitter and low phase noise, while simultaneously switching between two or more output frequencies. The LMX2330UTM clock frequency generator is designed to meet the stringent requirements of communications, test and measurement, and cellular base station applications, as well as any frequency agile applications where a high performance, low noise frequency synthesizer is needed.The LMX2330UTM is optimized for low power, and its low power requirements allow designers to create high performance, ultra low noise frequency synthesizers and PLLs. Also, the LMX2330UTM has an integrated JTAG communication port that allows the configuration of the synthesiser to be verified and updated.In summary, the LMX2330UTM is a cost effective, high performance frequency synthesizer ideal for a wide range of applications such as radio and microwave frequency synthesizers, Base Station transceiver equipment, and test and measurement equipment.. It offers advanced fractional-N synthesis and PLL technology, advanced loop filtering techniques and low power requirements, making it an ideal choice for high performance clock/timing applications.

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