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Rail-to Rail Op Amp Achieves 180 MHz at 1mA

Mon, 12/14/2009 - 11:48am


Linear Technology introduces the LTC6246, LTC6247 and LTC6248, a family of op amps that utilizes a power-efficient SiGe process to achieve 180 MHz gain-bandwidth product and 90V/æs slew rate, while consuming just 1 mA maximum supply current per amplifier. These single, dual and quad op amps also feature rail-to-rail inputs and outputs, and 4.2nV/ûHz wideband noise. Although these parts were designed to provide the very best speed/power efficiency available in a rail-to-rail amplifier, DC performance is not sacrificed to achieve it. Input offset voltage is specified at 500æV max and open loop gain is 45V/mV. Bias current cancellation is employed to achieve a maximum of 350nA input bias current over most of the input common mode voltage range, allowing these products to be used in many applications with high source resistance such as portable instrumentation and other battery-powered or heat-constrained precision systems.

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