AK1541 Datasheet PDF | Asahi Kasei Microdevices

Asahi Kasei Microdevices AK1541

The AK1541 is a Delta-Sigma Fractional-N PLL (Phase Locked Loop) frequency synthesizer with a frequency switching function, covering a wide range of frequencies from 20 to 600MHz. 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). The access to the registers is controlled via a three-lines serial interface.

Part No.	AK1541
Datasheet	AK1541 Download
Manufacturer	Asahi Kasei Microdevices
Description	20 to 600MHz Delta-Sigma Fractional-N Frequency Synthesizer
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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 10.6 to 168.9uA. In a fast lockup scheme, the charge pump current can be set in 8 steps, in the range from 0.84 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: 3.4mA 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) 20 to 600MHz MS1043-E-05 1 2013/03 [AK1541] Table of Contents 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.