Wideband video amps

National Semiconductor has launched what it claims are the world’s fastest amplifiers for professional and wideband video applications.

The high-speed LMH6738 and LMH6739, both created using National’s proprietary VIP10 process technology, operate at 750 MHz small signal bandwidth and are targeted at applications in video projection, switching and routing, and HDTV systems.

National’s LMH6738 is wideband, triple, current feedback (CFB) operational amplifier, and the LMH6739 is a wideband, triple, programmable gain buffer (PGB).

Both devices have independent disable pins for each amplifier, feature 7.3 nsec enable times, and have low crosstalk, allowing them to be used in multiplexing and demultiplexing applications.

With 400 MHz large signal bandwidth (LSBW), 3300 V/us slew rate, and a 0.1dB gain flatness of 200 MHz, the LMH6738/39 has a high output current of 90mA to drive low impedance, high capacitive loads in single-ended cable line driving applications.

National’s LMH6738 is available now in SSOP-16 packaging and is priced at $2.95. The LMH6739 is available now in SSOP-16 packaging and is priced at $3.15.

All prices are for 1,000-unit quantities.