The AD8019 is a voltage feedback amplifier with high outputcurrent capability. As a voltage feedback amplifier, the AD8019features lower current noise and more applications flexibility thancurrent feedback designs. It is fabricated on Analog Devices’proprietary High Voltage eXtra Fast Complementary BipolarProcess (XFCB-HV), which enables the construction of PNPand NPN transistors with similar fTs in the 4 GHz region. Theprocess is dielectrically isolated to eliminate the parasitic andlatch-up problems caused by junction isolation. These featuresenable the construction of high-frequency, low-distortion amplifiers.
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