A Low-Power, High-Speed, Current-Feedback Op-Amp with a Novel Class AB High Current Output Stage
نویسنده
چکیده
A complementary bipolar low-power, high-speed, current-feedback operational amplifier is described. The amplifier incorporates a new Class AB output stage that enables high output current drive of 100 mA and large voltage swing within 1 V of the supply rails while operating at low quiescent current of 1.5 mA. The amplifier was fabricated in a junction-isolated complementary bipolar process with NPN/PNP ft of 4.5/3.8 GHz. The amplifier, configured for noninverting gain of two and 100load, provides 3-dB bandwidth of 110 MHz and 2-V pulse rise time of 7 ns.
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