Okika Devices

Chameleon™ 8th-Order Butterworth Lowpass Filter Modules

Okika Devices high-performance, 8th-order Butterworth devices deliver precision lowpass filtering

Image of Okika Chameleon™ 8th Order Butterworth Lowpass Filter ModulesOkika Devices Chameleon modules (OTC931xL) are high-performance, 8th-order Butterworth lowpass filters built on the AN231E04 field-programmable analog array (FPAA). Each module features an internal clock and EEPROM to deliver fixed function, characterized filter performance across a wide range of cutoff frequencies (10 Hz to 100 kHz).

Features
  • 8th-order Butterworth filter: flat passband, low ringing
  • FPAA-based with internal EEPROM: programmable or fixed-function
  • Differential signal path: max dynamic range, reduced noise
  • Input amplifier for easy single-supply interfacing
  • Optional AC coupling and bypassable amplifier
  • Buffered/unbuffered outputs for ADCs or cascaded modules
  • Complementary sample clock outputs for ADC sync
  • Dual-channel support
Applications
  • Industrial automation
  • Biomedical instrumentation
  • Audio and acoustic processing
  • Sensor signal conditioning
  • ADC antialiasing and post-DAC smoothing
  • Custom analog front ends and prototyping
Published: 2026-03-13