The AD8019 is a voltage feedback amplifier with high output current capability. As a voltage feedback amplifier, the AD8019 features lower current noise and more applications flexibility than current feedback designs. It is fabricated on Analog Devices’ proprietary High Voltage eXtra Fast Complementary Bipolar Process (XFCB-HV), which enables the construction of PNP and NPN transistors with similar fTs in the 4 GHz region. The process is dielectrically isolated to eliminate the parasitic and latch-up problems caused by junction isolation. These features enable the construction of high-frequency, low-distortion amplifiers.