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The LMH6739 is a very wideband, DC coupled monolithic programmable gain buffer designed specifically for ultra high resolution video systems as well as wide dynamic range systems requiring exceptional signal fidelity. Benefiting from National's current feedback architecture, the LMH6739 offers gains of −1, 1 and 2. At a gain of +2 the LMH6739 supports ultra high resolution video systems with a 400 MHz 2 VPP 3 dB Bandwidth. With 12-bit distortion level through 30 MHz (RL = 100Ω), 2.3nV/Hz input referred noise, the LMH6739 is the ideal driver or buffer for high speed flash A/D and D/A converters. Wide dynamic range systems such as radar and communication receivers requiring a wideband amplifier offering exceptional signal purity will find the LMH6739's low input referred noise and low harmonic distortion make it an attractive solution.
The LMH6739 is available in a space saving SSOP package.
LMH6739 Maximum Ratings
Supply Voltage (V+ - V) ...........................................13.2V IOUT ......................................................................(Note 3) Common Mode Input Voltage ....................................±VCC Maximum Junction Temperature ...............................+150 Storage Temperature Range .....................−65 to +150 Soldering Information Infrared or Convection (20 sec.) ................................235 Wave Soldering (10 sec.) ...........................................260 ESD Tolerance (Note 4) Human Body Model ...................................................2000V Machine Model ............................................................200V Storage Temperature Range .....................−65 to +150
LMH6739 Features
`750 MHz −3 dB small signal bandwidth (AV = +1) `−85 dBc 3rd harmonic distortion (20 MHz) `2.3 nV/Hz input noise voltage `3300 V/µs slew rate `32 mA supply current (10.6 mA per op amp) `90 mA linear output current `0.02/0.01 Diff. Gain / Diff. Phase (RL = 150Ω) `2mA shutdown current
LMH6739 Typical Application
·RGB video driver ·High resolution projectors ·Flash A/D driver ·D/A transimpedance buffer ·Wide dynamic range IF amp ·Radar/communication receivers ·DDS post-amps ·Wideband inverting summer ·Line driver