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NE5517 NE5517A跨导放大器的应用
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2009-06-03
吴湛
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The Philips Semiconductors NE5517 is a truly versatile dual
operational transconductance amplifier. In plain language, it is a
voltage–to–current converter governed by the transconductance gm,
which is equivalent to IOUT/VIN. The gm is increased or decreased
linearly by varying the amplifier bias current (IABC) through an
external pin (see Figure 1). From the proper use of the IABC pin,
many control circuits can be realized.
operational transconductance amplifier. In plain language, it is a
voltage–to–current converter governed by the transconductance gm,
which is equivalent to IOUT/VIN. The gm is increased or decreased
linearly by varying the amplifier bias current (IABC) through an
external pin (see Figure 1). From the proper use of the IABC pin,
many control circuits can be realized.
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