LTC1562-2
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LTC1562-2

Very Low Noise, Low Distortion Active RC Quad Universal Filter

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Part Details
Part Models 4
1ku List Price Starting From $12.81
Features
  • Continuous Time—No Clock
  • Four 2nd Order Filter Sections, 20kHz to 300kHz Center Frequency
  • Butterworth, Chebyshev, Elliptic or Equiripple Delay Response
  • Lowpass, Bandpass, Highpass Responses
  • 99dB Typical S/N, ±5V Supply (Q = 1)
  • 93dB Typical S/N, Single 5V Supply (Q = 1)
  • Rail-to-Rail Input and Output Voltages
  • DC Accurate to 3mV (Typ)
  • ±0.5% Typical Center Frequency Accuracy
  • “Zero-Power” Shutdown Mode
  • Single or Dual Supply, 5V to 10V Total
  • Resistor-Programmable fO, Q, Gain
Additional Details
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The LTC1562-2 is a low noise, low distortion continuous time filter with rail-to-rail inputs and outputs, optimized for a center frequency (fO) of 20kHz to 300kHz. 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. All pass, notch and elliptic responses can also be realized.

The LTC1562-2 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 90dB signal-to-noise ratio from a single 5V power supply. Low level signals can exploit the built-in gain capability of the LTC1562-2. Varying the gain of a section can achieve a dynamic range as high as 114dB with a ±5V supply.

Other cutoff frequency ranges can be provided upon request.

Applications

  • 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
Part Models 4
1ku List Price Starting From $12.81

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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LTC1562IG-2#PBF
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LTC1562IG-2#TRPBF
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Product Lifecycle

PCN

Aug 6, 2022

- 22_0171

Laser Top Mark Conversion for SSOP Packages Assembled in PNG

LTC1562CG-2#PBF

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Laser Top Mark Conversion for SSOP Packages Assembled in PNG

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LTC1562CG-2#TRPBF

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LTC1562IG-2#PBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC266B-B

LTC1562CG-2 | Very-Low-Noise, Low Distortion Quad Universal Filter

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DC266B-B

LTC1562CG-2 | Very-Low-Noise, Low Distortion Quad Universal Filter

LTC1562CG-2 | Very-Low-Noise, Low Distortion Quad Universal Filter

Product Detail

Demonstration circuit DC266B-A is for the evaluation of 8th order filter circuits using an LTC1562 (no dash) and DC266B-B for an LTC1562-2. LTC1562 and LTC1562-2 are quad 2nd order active-RC filter building blocks. Each 2nd order section has an integrator trimmed with internal capacitors and resistors to 100kHz and 200 kHz for the LTC1562 and LTC1562-2 respectively. The trimmed frequency error is ±0.6% for the LTC1562A and ±1.5% for the LTC1562-2. The LTC1562 or LTC1562-2 2nd order sections can be configured with external resistors to implement lowpass, bandpass or highpass filters.

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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