AK1545

[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. 2. Features … … … … … … … Operating frequency : Programmable charge pump current : Fast lock mode : Supply Voltage : Separate Charge Pump Power Supply : Excellent Phase Noise : On-chip lock detection feature of PLL : Digit 500MHz to 3.5GHz 250μA and 1mA The charge pump current is switched by this function. 2.7 to 5.5 V (AVDD, DVDD pins) AVDD to 5.6V (CPVDD pin) -217dBc/Hz Selectable P hase F requency D etector (P FD) Output o r al filtered lock detect 16pin TSSOP -40°C to 85°C … … Package : Operating temperature : MS1471-E-00 1 2012/10 http://www.Datasheet4U.com [AK1545] - Table of Contents - 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. Overview ____________________________________________________________...