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25 mA LDO with −63 dB PSRR at 30 MHz for WiMAX

25 mA LDO with −63 dB PSRR at 30 MHz for WiMAX

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© The Institution of Engineering and Technology
Published

A low-dropout regulator (LDO) with high power-supply rejection ratio (PSRR) is presented. The high PSRR at high frequency is enabled by a signal-nulling technique achieved by a wide-bandwidth feedforward path. Experimental results verify the outstanding performance.

Inspec keywords: WiMax

Other keywords: low-dropout regulator; frequency 30 MHz; current 25 mA; high power-supply rejection ratio; wide-bandwidth feedforward path; WiMAX; signal-nulling technique

Subjects: Radio links and equipment

References

    1. 1)
      • Gupta, V., Rincon-Mora, G.A.: `A 5 mA 0.6 µm CMOS Miller-compensated LDO regulator with −27 dB worst-case power-supply rejection using 60 pF of on-chip capacitance', ISSCCDig. Tech. Pprs, 2007, San Francisco, CA, USA, p. 520–521.
    2. 2)
      • M. El-Nozahi , A. Amer , J. Torres , K. Entesari , E. Sanchez-Sinencio . High PSR low drop-out regulator with feed-forward ripple cancellation technique. IEEE J. Solid-State Circuits , 565 - 577
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2010.1547
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