Datasheet

HFA1149
450MHz, Low Power, Video Operational Amplifier with Programmable Output Disable

Not Recommended for New Designs.
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Key Features

Wide - 3dB Bandwidth (AV = +2) 450MHz
Gain Flatness (To 250MHz) 0.8dB
Very Fast Slew Rate (AV = +2) 1100V/µs
High Input Impedance 1.7MΩ
Differential Gain/Phase 0.02%/0.02 Degrees
Low Supply Current 10mA
Fast Output Disable/Enable 12ns/20ns

Description

The HFA1149 is a high speed, low power, current feedback amplifier built with Intersil's proprietary complementary bipolar UHF-1 process. This amplifier features a unique combination of power and performance specifically tailored for video applications.

The HFA1149 incorporates an output disable pin which is TTL/CMOS compatible, and user programmable for polarity (active high or low). This feature eliminates the inverter required between amplifiers in multiplexer configurations. The ultra-fast (12ns/20ns) disable/enable times make the HFA1149 the obvious choice for pixel switching and other high speed multiplexing applications. The HFA1149 is a high performance, pin compatible upgrade for the popular HA-5020 and HFA1145, as well as the CLC410.

For a comparably performing op amp without an output disable, please refer to the HFA1109 data sheet.