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LMH6629SD Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LMH6629SD Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 22 page  LMH6629 June 3, 2010 Ultra-Low Noise, High Speed Operational Amplifier General Description The LMH6629 is a high speed, ultra low-noise amplifier de- signed for applications requiring wide bandwidth with high gain and low noise such as in communication, test and mea- surement, 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 inter- nal 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 dis- tortion (HD2/ HD3 = −90 dBc/ −94 dBc) and ultra-low DC errors (780 µV V OS Max @ 25°C, ±0.45 µV/°C drift) allow pre- cision operation in both AC- and DC-coupled applications. The LMH6629 is fabricated in National Semiconductor’s pro- prietary SiGe process and is available in a 3mm x 3mm, 8 pin LLP package. Features Specified for V S = 5V, RL = 100Ω, AV = 10V/V ■ –3dB bandwidth 900MHz ■ Input voltage noise 0.69 nV/ √Hz ■ Input offset voltage max. @ 25°C ±780 µV ■ Slew rate 1600 V/ μs ■ HD2 @ f = 1MHz, 2V PP −90 dBc ■ HD3 @ f = 1MHz, 2V PP −94 dBc ■ Supply voltage range 2.7V to 5.5V ■ Typical supply current 15.5 mA ■ Selectable min. gain ≥4 or ≥10 ■ Package LLP-8 Applications ■ Instrumentation Amplifiers ■ Ultrasound Pre-amps ■ Wide-band Active Filters ■ Opto-electronics ■ Medical imaging systems ■ Base-station Amplifiers ■ Trans-impedance amplifier Typical Application Circuit 30068011 FIGURE 1. Transimpedance Amplifier © 2010 National Semiconductor Corporation 300680 www.national.com |
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