HFA1112IB

DATASHEET HFA1112 FN2992 Rev 8.00 July 27, 2005 850MHz, Low Distortion Programmable Gain Buffer Amplifiers The HFA1112 is a closed loop Buffer featuring user programmable gain and ultra high speed performance. Manufactured on Intersil’s proprietary complementary bipolar UHF-1 process, these devices offer a wide -3dB bandwidth of 850MHz, very fast slew rate, excellent gain flatness, low distortion and high output current. Features A unique feature of the pinout allows the user to select a voltage gain of +1, -1, or +2, without the use of any external components. Gain selection is accomplished via connections to the inputs, as described in the “Application Information” section. The result is a more flexible product, fewer part types in inventory, and more efficient use of board space. • Fast Settling Time (0.1%). . . . . . . . . . . . . . . . . . . . . . 11ns Compatibility with existing op amp pinouts provides flexibility to upgrade low gain amplifiers, while decreasing component count. Unlike most buffers, the standard pinout provides an upgrade path should a higher closed loop gain be needed at a future date. • User Programmable for Closed-Loop Gains of +1, -1 or +2 without Use of External Resistors • Wide -3dB Bandwidth. . . . . . . . . . . . . . . . . . . . . . 850MHz • Very Fast Slew Rate. . . . . . . . . . . . . . . . . . . . . . 2400V/s • High Output Current . . . . . . . . . . . . . . . . . . . . . . . . . 60mA • Excellent Gain Accuracy . . . . . . . . . . . . . . . . . . . 0.99V/V • Overdrive Recovery . . . . . . . . . . . . . . . . . . . . . . . .