LTC1164-5 - Low Power 8th Order Pin Selectable Butterworth or Bessel Lowpass Filter

Low power operation is achieved without compromising noise or distortion performance. With ±5V supplies and 10kHz cutoff frequency, the operating signal-to-noise ratio is 86dB and the THD throughout the passband is 0.015%. Under the same conditions, a 77dB signal-to-noise ratio and distortion is obtained with a single 5V supply while the clock feedthrough is kept below the noise level. The maximum signal-to-noise ratio is 92dB.

The LTC1164-5 approximates an 8th order Butterworth response with a clock-to-cutoff frequency ratio of 100:1 (Pin 10 to V–) or 50:1 double-sampled (Pin 10 to V+ and Pin 1 shorted to Pin 13). Double-sampling allows the input signal frequency to reach the clock frequency before any aliasing occurrence. An 8th order Bessel response can also be approximated with a clock-to-cutoff frequency ratio of 140:1 (Pin 10 to ground). With ±7.5V supply, ±5V supply and single 5V supply, the maximum clock frequency of the LTC1164-5 is 1.5MHz, 1MHz, and 1MHz respectively. The LTC1164-5 is pin-compatible with the LTC1064-2 and LTC-1064-3.

Features
  • Pin Selectable Butterworth or Bessel Response
  • 4mA Supply Current with ±5V Supplies
  • fCUTOFF up to 20kHz
  • 100µVRMS Wideband Noise
  • THD <0.02% (50:1, VS = ±7.5V, VIN = 2VRMS)
  • Operates with a Single 5V Supply (1VRMS Input Range)
  • 60µVRMS Clock Feedthrough (Single 5V Supply)
  • Operates up to ±8V Supplies
  • TTL/CMOS-Compatible Clock Input
  • No External Components
  • Available in 14-Pin DIP and 16-Pin SO Wide Packages
Typical Application
LTC1164-5 Typical Application
LTC1164-5 Typical Application
Applications
  • Anti-Aliasing Filters
  • Battery-Operated Instruments
  • Telecommunications Filters
  • Smoothing Filters
Packaging
LTC1164-5 Package Drawing
LTC1164-5 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC1164-5CN#PBFN-14C$13.35$10.80
LTC1164-5CSW#PBFSW-16C$18.35$14.85
LTC1164-5CSW#TRPBFSW-16C$14.91
Datasheet
Application Note
Reliability Data
CAD Symbol
Related Products
LTC1164-5 - Low Power 8th Order Pin Selectable Butterworth or Bessel Lowpass Filter
AN52 - Linear Technology Magazine Circuit Collection, Volume 1
R042 Reliability Data
LTC1164-5 Footprints and Symbols