The HFA1112 is a closed loop Buffer featuring userprogrammable gain and ultra high speed performance.Manufactured on Intersil’s proprietary complementarybipolar UHF-1 process, these devices offer a wide -3dBbandwidth of 850MHz, very fast slew rate, excellent gainflatness, low distortion and high output current.A unique feature of the pinout allows the user to select avoltage gain of +1, -1, or +2, without the use of any externalcomponents. Gain selection is accomplished viaconnections to the inputs, as described in the “ApplicationInformation” section. The result is a more flexible product,fewer part types in inventory, and more efficient use of boardspace.Compatibility with existing op amp pinouts provides flexibilityto upgrade low gain amplifiers, while decreasing componentcount. Unlike most buffers, the standard pinout provides anupgrade path should a higher closed loop gain be needed ata future date.This amplifier is available with programmable output limitingas the HFA1113. For applications requiring a standard bufferpinout, please refer to the HFA1110 data sheet.