The selectable high frequency lowpass/ bandpass filter IC Is a CMOS chip that can be configured for either a lowpass or a bandpass filter. The lowpass response can be a 6 pole Butterworth, Elliptic or Bessel filter. The band pass response can be a six pole full, third or sixth octave bandpass filter. The device uses switched-capacitor filters and no external components (except for decoupling capacitors) are required, Only an external clock is needed.

A four input multiplexor and externally selectable gain setting pin, along with a power down and clock to corner ratio select pin are included in the 16 pin version. An 8 pin version is also available for compact PC board layouts. MSHFS3, MSHFS4 and MSHFS6 are lower current, lower frequency versions.


  • Six Filter Types In One Package
  • No External Components
  • Switched-Capacitor Filters
  • High Frequency Operation
  • Input Multiplexor
  • Adjustable Gain 0, 10 or 20 dB
  • Small Package Size
  • Low Cost
  • On Chip Power Save Pin
  • ANSI Compatible Bandpass


  • Spectrum Analyzers
  • General Purpose Systems
  • Portable Systems
  • Anti-Alias Filters
  • Reconstruction Filters
  • Telecommunications
  • Tracking Filters
  • Harmonic Analysis
  • Noise Analysis
  • Data Communication
  • Wireless Applications