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Ultralow Noise Variable Gain Broadband Amplifier

Model: AD604

  • Two independent linear-in-dB channels
  • ±1.0dB gain accuracy
  • 40MHz (-3dB) bandwidth
  • 300k? input resistance
  • Stable gain with temperature and supply variations
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The AD604 is an ultralow noise, very accurate, dual-channel, linear-in-dB variable gain amplifier (VGA) optimized for time-based variable gain control in ultrasound applications; however, it supports any application requiring low noise, wide bandwidth, variable gain control. Each channel of the AD604 provides a 300k? input resistance and unipolar gain control for ease of use. User determined gain ranges, gain scaling (dB/V), and dc level shifting of output further optimize performance.
  • Two independent linear-in-dB channels
  • ±1.0dB gain accuracy
  • 40MHz (-3dB) bandwidth
  • 300k? input resistance
  • Stable gain with temperature and supply variations
  • Single-ended unipolar gain control
  • Power shutdown at lower end of gain control
  • Drive ADCs directly
  • Applications:
    • Ultrasound and sonar time-gain controls
    • High performance AGC systems
    • Signal measurement
 
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