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AK1543

AKM
Part Number AK1543
Manufacturer AKM
Description 1300MHz Delta-Sigma Fractional-N Frequency Synthesizer
Published May 11, 2014
Detailed Description [AK1543] AK1543 1300MHz Delta-Sigma Fractional-N Frequency Synthesizer 1. Overview The AK1543 is a Delta-Sigma Fraction...
Datasheet PDF File AK1543 PDF File

AK1543
AK1543

Overview
[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.
2.
Features     Delta-Sigma Fractional-N frequency synthesizer providing shorter lockup time, lower phase noise and low spurious performance Operating frequency: On-chip charge pump for fast lockup Programmable charge pump current: In a normal operating scheme, the charge pump current can be set in 16 steps, in the range from 10.
6uA to 168.
9uA.
In a fast lockup scheme, the charge pump current can be set in 8 steps, in the range from 0.
84mA to 2.
32mA.
       Supply Voltage: Separate power supply for the charge pump: On-chip power-saving features On-chip PLL lock detect feature: Direct output to the PFD (Phase Frequency Detector) or digital filtering output can be selected.
Very low consumption current: Package: Operating temperature: 4.
1 mA typ.
(excluding a charge pump current) 24pin QFN (0.
5mm pitch, 4mm  4mm  0.
7mm) -40C° to 85C° 2.
7 to 5.
5 V (PVDD and CPVDD pins) PVDD to 5.
5V (CPVDD pin) 400 to 1300MHz MS1206-E-02 1 2013/03 http://www.
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Overview ________________________________ ________________________________ ___________ 1 Features __________________________...


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