LTC1564
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LTC1564

10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A

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Part Details
Part Models 4
1ku List Price Starting From $10.60
Features
  • 4-Bit Digitally Controlled 8th-Order Lowpass Filter
    • fCUTOFF Adjustable from 10kHz to 150kHz in 10kHz Steps
  • 4-Bit Digitally Controlled Programmable Gain Amplifier
    • G = 1 to 16 in 1V/V Steps
  • Miniature 16-Pin SSOP Package
  • No External Components
  • 122dB Total System Dynamic Range
  • Rail-to-Rail Input and Output Range
  • 2.7V to 10V Operation
  • Low Noise Mute Mode
  • Low Power Shutdown Mode
  • Available in 16-Lead Plastic SSOP Package
Additional Details
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The LTC1564 is a new type of continuous time filter for antialiasing, reconstruction and other band-limiting applications. No other analog components or filter expertise are needed to use it. There is one analog input pin and one analog output pin. The cutoff frequency (fC) and gain are programmable while the shape of the lowpass response is fixed. A latching digital interface stores fC and gain settings or it can be bypassed for control directly from the pins. The LTC1564 operates from 2.7V to 10V total (single or split supplies) and comes in a 16-pin surface mount SSOP.

The LTC1564 is a rail-to-rail high resolution 8th-order lowpass filter with two stopband notches, giving approximately 100dB attenuation at 2.5 times the passband cutoff frequency fC (a de-facto standard for DSP front ends). Signals with low or variable levels can be normalized with the built-in variable gain that reduces input-referred noise with increasing gain for a typical dynamic range (maximum signal level to minimum noise) of 122dB (20 equivalent bits) with 20kHz fC and 118dB at 100kHz fC on a ±5V supply.

Other frequency-response shapes can be provided upon request. Please contact Analog Devices Marketing.

Applications

  • Antialias or Reconstruction Filtering
  • DSP Systems
  • Communications Systems
  • Scientific Instruments
  • High Resolutions (16 Bits to 20 Bits)
  • Processing Signals Buried in Noise
  • Audio Signal Processing
  • Programmable Data Rates
  • Automatic Gain Control (AGC)
  • Single Part Replacing Multiple Filters
Part Models 4
1ku List Price Starting From $10.60

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC1564CG#PBF
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LTC1564CG#TRPBF
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LTC1564IG#PBF
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LTC1564IG#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

 
LinearLab Tools
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A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.

Evaluation Kit

Evaluation Kits 1

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DC393B

Evaluation board for the LTC1564 Digitally Controlled Antialiasing Filter

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DC393B

Evaluation board for the LTC1564 Digitally Controlled Antialiasing Filter

Evaluation board for the LTC1564 Digitally Controlled Antialiasing Filter

Features and Benefits

The DC393B evaluation board is for the LTC1564 digitally controlled amplifier and filter. The LTC1564 is a continuous time 8th order lowpass filter with cutoff frequency (fc) and gain digitally controlled. The LTC1564 is a rail-to-rail elliptic 8th-order lowpass filter giving approximately 100dB attenuation at 2 .5 x fc. Signals with low or variable levels can be normalized with the built-in variable gain that reduces input-referred noise with increasing gain for a maximum signal level to noise, SNR. A DC393B can be used stand-alone with external control of the LTC1564 digital inputs or as a Linduino shield controls the LTC1564 4-bit gain 1-16 and 4-bit bandwidth inputs (Linduino DC2026 is an Analog Devices trademark).

Product Detail

DC393B Connections:

  • Dual Power Supply – Connect supply to VCC1(5V), VEE1(-5V), VCC2(5V), VEE2(-5V) and GND.
  • Waveform Generator – Connect a BNC to SMA cable from generator output to IN SMA of DC393B.
  • Oscilloscope – Connect an SMA to BNC cable from OUT SMA of DC393B to Channel 1 input of oscilloscope.

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