Low-Noise Integrated PLL Synthesizes 10 MHz to 15 GHz (.PDF Download)

Many systems require clean stable RF/microwave signals with programmable control. The LMX2594 phase-locked loop (PLL) frequency synthesizer from Texas Instruments provides the performance and flexibility from 10 MHz to 15 GHz that is as well suited to commercial communications as to military radar systems. It has an integrated voltage-controlled oscillator (VCO) and can generate output frequencies over that broad range with minimal spurious content and low phase noise.

The PLL has integer-N and 32-b fractional-N division modes with high phase-detector frequencies (400 MHz in integer-N mode and 300 MHz in fractional-N mode) that yield stable output signals with excellent spectral purity. The N-divider operates without a pre-divider to achieve the excellent spurious performance,