[AK1590] AK1590 1GHz Delta-Sigma Fractional-N Frequency Synthesizer 1.
Overview AK1590 is a Delta-Sigma Fractional-N PLL (Phase Locked Loop) frequency synthesizer with a frequency switching function, covering a wide range of frequencies from 60 to 1000MHz.
This product consists of an 18-bit Delta-Sigma modulator, a low-noise phase frequency comparator, a highly accurate charge pump, a reference divider, dual-module prescaler (P/P+1) and frequency offset adjustable circuits.
2.
Features   Operating frequency: Programmable charge pump current: 60 to 1000MHz In a normal operating scheme, the charge pump current can be set in 8 steps, in the range from 20 to 168μA.
In a Fast Lockup scheme, t...

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