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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 www.linear.com 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.

Features 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

Applications 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 Packaging