AD9850BRSZ, Полнофункциональный КМОП синтезатор цифрового прямого синтеза с тактовой частотой 125 МГц

Описание AD9850BRSZ

The AD9850BRSZ is a highly Integrated Device, uses advanced DDS technology coupled with an internal high speed, high performance, D/A converter and comparator, to form a complete digitally programmable frequency synthesizer and clock generator function. When referenced to an accurate clock source, it generates a spectrally pure, frequency/phase-programmable, analogue output sine wave. This sine wave can be used directly as a frequency source or converted to a square wave for agile-clock generator applications. Its innovative high speed DDS core provides a 32-bit frequency tuning word, which results in an output tuning resolution of 0.0291Hz, for a 125MHz reference clock input. The AD9850BRSZ circuit architecture allows the generation of output frequencies of up to one-half the reference clock frequency (or 62.5MHz) and the output frequency can be digitally changed (asynchronously) at a rate of up to 23 million new frequencies per second.

• 125MHz Clock Rate
• On-chip High Performance DAC and High Speed Comparator
• DAC SFDR >50 dB at 40MHz AOUT
• 32-bit Frequency Tuning Word
• Parallel Byte or Serial Loading Format Simplified Control Interface
• Phase Modulation Capability
• 3.3 or 5V Single-supply Operation
• 380mW at 125MHz (5V) and 155mW at 100MHz (3.3V) Low Power
• Power-down Function