STW81103 datasheet(15/53 Pages) STMICROELECTRONICS

부품명	STW81103

상세설명	Multi-band RF frequency synthesizer with integrated VCOs

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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STW81103

Typical performance characteristics

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Typical performance characteristics

Phase noise is measured with the Agilent E5052A Signal Source Analyzer. All closed-loop

measurements are done with FSTEP=200 kHz, with the FPFD and charge pump current

properly set. The loop filter configuration is depicted in

Figure 36: Typical application

diagram, and the reference clock signal is at 76.8 MHz with a phase noise of -135 dBc/Hz

@1 kHz offset, -145 dBc/Hz @10 kHz offset and -149.5 dBc/Hz of noise floor.

Figure 3.

VCO A (direct output) open loop

phase noise

Figure 4.

VCO B (direct output) open loop

phase noise

Figure 5.

VCO A (direct output) closed loop

phase noise at 2.775 GHz

(FSTEP=200 kHz; FPFD=200 kHz;

ICP=2 mA)

Figure 6.

VCO B (direct output) closed loop

phase noise at 4.675 GHz

(FSTEP=200 kHz; FPFD=200 kHz;

ICP=3 mA)

1.0° rms

1.5° rms

STW81103 데이터시트(PDF) 15 Page - STMicroelectronics