Abstract
A 70∼900 MHz broadband PLL frequency synthesizer is developed for the single conversion DVB-C receiver in a standard 0.25 μm CMOS technology. The true 3-band VCO with a novel AAC (Auto-Amplitude Control) circuit provides a wideband amplitude stable output and a reliable startup without degrading the phase noise performance. A 16/17 dual-modulus prescaler with a new logic structure has increased the speed. The charge pump current is programmable for wide loop stabilization and phase noise optimization. The measured results show that the locked range of the frequency synthesizer is 70∼900 MHz. The worst phase noise at 1 k/10 k/100 k/1 MHz offset frequency is ordinal −65/−85/−112/−128 dBc/Hz and the spur at reference frequency is lower than −90 dBc.The frequency synthesizer chip dissipates only 16.2 mA from a 3.3 V supply.
Similar content being viewed by others
References
Dawkins, M., & Burdett, A. P. (2003). A single-chip tuner for DVB-T. IEEE Journal of Solid-State Circuits, 38(8), 307–1317.
van Sinderen, J., Seneschal, F., Stikvoort, E., et al. (2003). A 48–860 MHz digital cable tuner IC with integrated RF and IF selectivity. ISSCC Digest Technical Papers, pp. 444–506.
Sim, S., Kuhn, R., & Pflaum, B. (2002). A three-band-tuner for digital terrestrial and multistandard reception. ICCE Digest of Technical Papers, pp. 709–717.
Mehr, I., Rose, S., Nesterenko, S., et al. (2005). A dual-conversion tuner for multi-standard terrestrial and cable reception. Symposium on VLSI Circuits, pp. 340–343.
Margarit, M. A., Tham, J. L., Meyer, R. G., & Deen, M. J. (1999). A lownoise, low-power VCO with automatic amplitude control for wireless applications. IEEE Journal of Solid-State Circuits, 34(6), 761–771.
Zanchi, A., Samori, C., Levantino, S., & Lacaita, A. (2001). A 2 V 2.5-GHz–104 dBc/Hz at 100 kHz fully-integrated VCO with wide-band low noise automatic amplitude control loop. IEEE Journal of Solid-State Circuits, 36(4), 611–619.
Berney, A. D., Niknejad, A. M., & Meyrt, R. G. (2005). A 1.8-GHz LC VCO with 1.3-GHz tuning range and digital amplitude calibration. IEEE Journal of Solid-State Circuits, 40(4), 909–917.
Craninckx, J., Steyaert, M., & Miyakawa, H. (1997). A fully integrated spiral-LC CMOS VCO set with prescaler for GSM and DCS-1800 systems. In Proc. CICC (pp. 403–406).
Romanò, L., Levantino, S., Pellerano, S., et al. (2002). Low jitter design of a 0.35 μm-CMOS frequency divider operating up to 3 GHz. In Proc. ESSCIRC (pp. 611–614).
Park, B.-H., & Allen, P. E. (1998). A 1 GHz, low-phase-noise CMOS frequency synthesizer with integrated LC VCO for wireless communications. Custom Integrated Circuits Conference, 567–570.
Lin, T.-H., & Kaiser, W. J. (2001). A 900-MHz 2.5-mA CMOS frequency synthesizer with an automatic SC tuning loop. IEEE Journal of Solid-State Circuits, 36(3), 424–431.
Chi, B., Shi, B., & Wang Z. (2004). CMOS implementation of RF PLL frequency synthesizer. Acta Electronica Sinica of China, 32(11), 1761–1765.
de Foucauld, E., Billiot, G., & Mounet, C. (2005). A BiCMOS upconverter with 1.9 GHz multiband frequency synthesizer for DVB-RCT application. BCTM Proceeding (pp. 244–247).
Ryu, S., Chung, Y., Kim, H., Choi, J., & Kim, B. (2005). Phase noise optimization of CMOS VCO through harmonic tuning. IEEE Radio Frequency Integrated Circuits Symposium (pp. 403–406), October 2005.
Yanqing, N., Wang, Z., & Chen H. (2006). An ultra wideband VHF CMOS LC VCO. Chinese Jouranl of Semiconductors, 27(1), 14–17.
Acknowledgements
The authors would like to thank the co-workers from National ASIC System Engineering Technology Research Center of China, for the support of this work.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wu, J., Chen, Z. A CMOS broadband frequency synthesizer for DVB-C receiver. Analog Integr Circ Sig Process 52, 109–115 (2007). https://doi.org/10.1007/s10470-007-9103-3
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10470-007-9103-3