LMH6629

www.DataSheet4U.com LMH6629 Ultra-Low Noise, High Speed Operational Amplifier June 3, 2010 LMH6629 Ultra-Low Noise, High Speed Operational Amplifier General Description The LMH6629 is a high speed, ultra low-noise amplifier designed for applications requiring wide bandwidth with high gain and low noise such as in communication, test and measurement, optical and ultrasound systems. The LMH6629 operates on 2.7 to 5.5V supply with an input common mode range that extends below ground and outputs that swing to within 0.8V of the rails for ease of use in single supply applications. The LMH6629 has user-selectable internal compensation for minimum gains of 4 or 10 controlled by pulling the COMP pin low or high, thereby avoiding the need for external compensation capacitors required in competitive devices. The low-input noise (0.69nV/√Hz and 2.6 pA/√Hz), low distortion (HD2/ HD3 = −90 dBc/ −94 dBc) and ultra-low DC errors (780 µV VOS Max @ 25°C, ±0.45 µV/°C drift) allow precision operation in both AC- and DC-coupled applications. The LMH6629 is fabricated in National Semiconductor’s proprietary SiGe process and is available in a 3mm x 3mm, 8 pin LLP package. Features Specified for VS = 5V, RL = 100Ω, AV = 10V/V 900MHz ■ –3dB bandwidth 0.69 nV/√Hz ■ Input voltage noise ±780 µV ■ Input offset voltage max. @ 25°C 1600 V/ μs ■ Slew rate −90 dBc ■ HD2 @ f = 1MHz, 2VPP −94 dBc ■ HD3 @ f = 1MHz, 2VPP 2.7V to 5.5V ■ Supply voltage range 15.5 mA ■ Typical supply current ≥4 or ≥10 ■ Select...