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A 2.4-GHz PLL Synthesizer for a 1-V Bluetooth RF Transceiver
Akihiro YAMAGISHI Mamoru UGAJIN Tsuneo TSUKAHARA
IEICE TRANSACTIONS on Electronics
Publication Date: 2004/06/01
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit and Device Technologies)
PLL, synthesizer, low-power, phase noise, Bluetooth,
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A 1-V 2.4-GHz-band fully monolithic PLL synthesizer was fabricated in 0.2-µm CMOS/SOI process technology. It includes a voltage-controlled oscillator (VCO) and a 3-GHz fully differential dual-modulus prescaler on a chip. A low-off-leakage-current charge pump is used for open-loop FSK modulation. When the PLL is in the open loop mode, the frequency drift of the output is lower than 2.5 Hz/µsec. The output phase noise is -104 dBc/Hz at 1-MHz offset frequency. The power consumption of the PLL-IC core is 17 mW at 1-V supply voltage. This PLL synthesizer is suitable for a 1-V Bluetooth RF transceiver LSI.