High-speed buffer amps

National Semiconductor has launched two new high-speed LMH buffer amplifiers that increase bandwidth and minimise distortion in video applications.

National Semiconductor has launched two new high-speed LMH buffer amplifiers that increase bandwidth and minimize distortion in video applications.

The amplifiers are designed for applications in test equipment, video switching and routing, medical imaging and professional video cameras.

National’s LMH6559 is a single, high-speed, closed-loop buffer amplifier with a 1.75GHz bandwidth, a slew rate of 4580V/us, 0.02 degrees differential phase and 0.06% differential gain. Additionally, the LMH6559 offers low distortion (-52dBc at 20MHz) and an output current of 74mA. It is targeted for video switching and routing, high-frequency active filters and wideband DC clamping buffers.

National’s LMH6560, on the other hand, is a quad, high-speed, closed-loop buffer amplifier with a slew rate of 3100V/us and low differential phase and gain, which minimise video degradation. Additional features include guaranteed single supply operation from 3V to 10V and an output current of 74mA. The LMH6560 is targeted for multi-channel video distribution, high-speed analog multiplexing, high-density buffering, and test equipment.

The LMH6559 is available in SOIC-8 and SOT23-5 packaging for $1.39. The LMH6560, available in SOIC-14 and TSSOP-14 packaging, is priced at $3.35. All prices are for 1,000-unit quantities.