LMH6629 Ultra-Low Noise, High Speed Op Amp

National Semiconductor's operational amplifier for applications requiring wide bandwidth with high gain and low noise

National Semiconductor LMH6629 Ultra-Low Noise, High Speed Op AmpNational Semiconductor's 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 2.7V 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 2.6pA/ √Hz), low distortion (HD2/ HD3 = -90dBc/ -94dBc), and ultra-low DC errors (780µV VOS max @ 25°C, ±0.45µV/°C drift) allow precision operation in both AC- and DC-coupled applications.

  Features   Applications
  • –3dB bandwidth: 900MHz
  • Input voltage noise: 0.69nV/ √Hz
  • Input offset voltage max. @ 25°C: ±780µV
  • Slew rate: 1600V/µs
  • HD2 @ f = 1MHz, 2VPP: -90dBc
  • HD3 @ f = 1MHz, 2VPP: -94dBc
  • Supply voltage range: 2.7V to 5.5V
  • Typical supply current: 15.5mA
  • Selectable min. gain: ≥4 or ≥10
  • Package: LLP-8
  • Instrumentation amplifiers
  • Ultrasound pre-amps
  • Wide-band active filters
  • Optoelectronics
  • Medical imaging systems
  • Base station amplifiers
  • Transimpedance amplifiers
RoHS Compliant

National Semi
Part Number
Part Number
Packaging Slew Rate Current -
Input Bias
Voltage -
Input Offset
LMH6629SD/NOPB LMH6629SDTR-ND Tape & Reel 1600V/µs 15µA 150µV 8-LLP LMH6629 Datasheet
LMH6629SDCT-ND Cut Tape
LMH6629SDDKR-ND Digi-Reel®