HFA1112

Features:

• This Circuit is Processed in Accordance to MIL-STD- 883 and is Fully Conformant Under the Provisions of Paragraph 1.2.1.
• User Programmable For Closed-Loop Gains of +1, -1 or +2 Without Use of External Resistors
• Low Differential Gain and Phase . . . . .0.02%/0.04 Deg.
• Low Distortion (HD3, 30MHz) . . . . . . . . . . -73dBc (Typ)
• Wide -3dB Bandwidth . . . . . . . . . . . . . . . 850MHz (Typ)
• Very High Slew Rate . . . . . . . . . . . . . . . 2400V/µs (Typ)
• Fast Settling (0.1%) . . . . . . . . . . . . . . . . . . . . 13ns (Typ)
• Excellent Gain Flatness (to 100MHz) . . . . 0.07dB (Typ)
• Excellent Gain Accuracy. . . . . . . . . . . . . . 0.99V/V (Typ)
• High Output Current . . . . . . . . . . . . . . . . . . 60mA (Typ)
• Fast Overdrive Recovery . . . . . . . . . . . . . . <10ns (Typ)




Application

• Video Switching and Routing
• Pulse and Video Amplifiers
• Wideband Amplifiers
• RF/IF Signal Processing
• Flash A/D Driver
• Medical Imaging Systems




Pinout






Specifications

Voltage Between V+ and V- . . . . . . . . . . . . . . . . . . . . . . . . 12V
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V
Voltage at Either Input Terminal . . . . . . . . .. . . V+ to V_Output
Current (50% Duty Cycle) . . . . . . . . . . . . . . . . . . . . . . . ±55mA
Junction Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . +175
ESD Rating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <2000V
Storage Temperature Range . . . . . . . . . . -65oC T_A +150
Lead Temperature (Soldering 10s). . . . . . . . . . . . . . . . . +300




Description

The HFA1112/12A are closed loop Buffers featuring user programmable gain and ultra high speed performance. Manufactured on Intersils 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. The HFA1112/12A  is a more stable version optimized for unity gain applications. 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. 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. This HFA1112/12A   amplifier is available with programmable output limiting as the HFA1113. For applications requiring a standard buffer pinout, please refer to the HFA1110 data sheet.