LT1567 - 1.4nV/Rt.Hz 180MHz Filter Building Block

The LT1567 is an analog building block optimized for very low noise high frequency filter applications. It contains two wideband rail-to-rail operational amplifiers, one of them internally configured as a unity-gain inverter. With the addition of a few passive components, the LT1567 becomes a flexible second order filter section with cutoff frequency (fC) up to 5MHz, ideal for antialiasing or for channel filtering in high speed data communications systems. A spreadsheet-based design tool is available at for designing lowpass and bandpass filters using the LT1567.

In addition to low noise and high speed, the LT1567 features single-ended to differential conversion for direct driving of high speed differential input A/D converters. The LT1567 operates from a total power supply voltage of 2.7V to 12V and supports signal-to-noise ratios above 100dB.

The LT1567 is available in an 8-lead MSOP package.

  • Single-Ended to Differential Conversion
  • Low Noise: 1.4nV/Rt.Hz
  • 20µVRMS Total Wideband Noise in Filter with 2MHz fC
  • Dynamic Range: 104dB SNR at ±5V
  • Supply Voltage 2.7V to 12V Total
  • Rail-to-Rail Outputs
  • DC Accurate: Op Amp VOS 0.5mV (Typ)
  • Trimmed Bandwidth for Accurate Filters
  • MSOP-8 Surface Mount Package
  • No External Clock Required
Typical Application
LT1567 Typical Application
LT1567 Typical Application
  • Low Noise, High Speed Filters to 5MHz
  • Low Noise Differential Circuits
  • Communication Channel or Roofing Filters
  • Antialias or Reconstruction Filtering
  • Video Signal Processing
  • Single-Ended to Differential Conversion
LT1567 Package Drawing
Order Information
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Design Note
Reliability Data
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Software and Simulation
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