Features and Benefits

  • Continuous Time—No Clock
  • Four 2nd Order Filter Sections, 10kHz to 150kHz Center Frequency
  • ±0.5% Typical Center Frequency Accuracy
  • ±0.3% Typical Center Frequency Accuracy (A Grade)
  • Wide Variety of Response Shapes
  • Lowpass, Bandpass and Highpass Responses
  • 103dB Typical S/N, ±5V Supply (Q = 1)
  • 97dB Typical S/N, Single 5V Supply (Q = 1)
  • 96dB Typical S/(N + THD) at ±5V Supply, 20kHz Input
  • Rail-to-Rail Input and Output Voltages
  • DC Accurate to 3mV (Typ)
  • “Zero-Power” Shutdown Mode
  • Single or Dual Supply, 5V to 10V Total
  • Resistor-Programmable fO, Q, Gain

Product Details

The LTC1562 is a low noise, low distortion continuous-time filter with rail-to-rail inputs and outputs, optimized for a center frequency (fO) of 10kHz to 150kHz. Unlike most monolithic filters, no clock is needed. Four independent 2nd order filter blocks can be cascaded in any combination, such as one 8th order or two 4th order filters. Each block’s response is programmed with three external resistors for center frequency, Q and gain, using simple design formulas. Each 2nd order block provides lowpass and bandpass outputs. Highpass response is available if an external capacitor replaces one of the resistors. Allpass, notch and elliptic responses can also be realized.

The LTC1562 is designed for applications where dynamic range is important. For example, by cascading 2nd order sections in pairs, the user can configure the IC as a dual 4th order Butterworth lowpass filter with 94dB signal-to-noise ratio from a single 5V power supply. Low level signals can exploit the built-in gain capability of the LTC1562. Varying the gain of a section can achieve a dynamic range as high as 118dB with a ±5V supply.

Other cutoff frequency ranges can be provided upon request. Please contact LTC Marketing.


  • High Resolution Systems (14 Bits to 18 Bits)
  • Antialiasing/Reconstruction Filters
  • Data Communications, Equalizers
  • Dual or I-and-Q Channels (Two Matched 4th Order Filters in One Package)
  • Linear Phase Filtering
  • Replacing LC Filter Modules

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.