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[AK1543]
AK1543
1300MHz Delta-Sigma Fractional-N Frequency Synthesizer
1. Overview
The AK1543 is a Delta-Sigma Fractional-N PLL (Phase Locked Loop) frequency synthesizer with a frequency switching function, covering a wide range of frequencies from 400 to 1300MHz. This product consists of an 18-bit Delta-Sigma modulator, a low-noise phase frequency comparator, a highly accurate charge pump, a reference divider and a dual-module prescaler (P/P+1). An excellent PLL can be achieved by combining this synthesizer with the external loop filter and VCO (Voltage Controlled Oscillator). The access to the registers is controlled via a three-lines serial interface. The operating supply voltage is from 2.7V to 5.5V; and the charge pump and serial interface can be driven by individual supply voltages.
AK1543 Datasheet
