This article describes the LTC6946, an integrated VCO integer-N synthesizer that delivers top notch PLL performance in a 4mm×5mm package. The device combines an industry-leading ultralow phase noise and spurious integer-N synthesizer with a low phase noise and broadband VCO.
The LTC6946 is a single-chip solution that integrates a frequency synthesizer and a voltage-controlled oscillator (VCO) to conserve space and cost in RF receiver or transmitter systems. It combines an ultralow phase noise integer-N synthesizer with a low phase noise, broadband VCO within a 4mm x 5mm package.
The document details the importance of low phase noise for maintaining signal-to-noise ratio (SNR) in digitally modulated signals and avoiding reciprocal mixing effects from adjacent channels. It provides specific frequency range versions for different applications.
| VCO Range (LTC6946-1) | 2240 to 3740 MHz |
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It conserves space and cost in RF systems without sacrificing signal quality.
No, the integrated VCOs achieve low phase performance and require no external components.