A high-speed phase-frequency detector ASIC with programmable dividers for LO generator and indirect synthesis applications

A novel device has been developed by Lockheed Martin Astro-Space (LMAS) for its Local Oscillator (LO) Generator and Frequency Synthesizer product lines. The ASIC is a digital, quad-D type, complementary output, phase/frequency detector with built-in programmable digital dividers on both the reference and RF inputs. The device has been used as a universal element of both direct divide and mix-down phaselocked loop (PLL) topologies. Applications requiring basic indirect synthesizers have developed into virtually on-the-shelf designs. The ASIC is currently implemented both in flight frequency generators and synthesizers.