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[AK1545]
AK1545
3.5GHz Low Noise Integer-N Frequency Synthesizer
1. Overview
The AK1545 is an Integer-N PLL (Phase Locked Loop) frequency synthesizer, covering a wide range of frequency from 500MHz to 3.5GHz. Co nsisting of a h ighly accurate charg e pum p, a referenc e di vider, a pro grammable divider and a dual-modulus prescaler (P/P+1), this product provides high performance, very low Phase Noise. An ideal PL L can be ach ieved b y comb ining th e AK154 5 with the exter nal l oop filter a nd VCO (Voltage Controlled Oscillator). Access to the registers is controlled via a 3-wire serial interface. The operating supply voltage is from 2.7V to 5.5V, and the charge pump circuit and the serial interface can be driven by individual supply voltage.
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