Okika Devices

High-Precision Filtering, Simplified

Chameleon OTC931xL combines 8th-order Butterworth performance, 10 Hz–100 kHz cutoff, and differential outputs in a ready-to-use FPAA module for modern sensors.
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Okika Devices makes analog FPAAs programmable so engineers can modernize analog  circuits with smaller size, lower power and lower cost.


Okika Devices is the world leader in Field Programmable Analog Arrays (FPAAs) for analog circuit design and analog signal processing. Our chips and software allow engineers to create, test, and optimize custom analog circuits quickly. FPAAs let you reprogram analog circuits in real time, enabling rapid prototyping without the cost or delay of fabricating a new chip.

What is a Field Programmable Analog Array?

A Field Programmable Analog Array works like a digital FPGA for analog circuits. Instead of digital logic gates, FPAAs use configurable analog blocks like operational and differential amplifiers with capacitor arrays that can be programmed as internal resistors or capacitors. You can connect and program these blocks with Okika’s analog software cores to create analog signal processing functions for applications such as sensor interfacing, audio processing, industrial controls, and low-power analog computing.

FlexAnalog(™) FPAAs

  • Switched-Capacitor technology for efficient multi-channel analog signal processing
  • 4 configurable analog blocks per chip for rapid analog prototyping, totaling 8 core amplifiers plus 7 input/output amplifiers
  • Pre-built library of verified analog circuit cores for fast design cycles
  • Software-controlled filters and amplification for real-time analog circuit adjustments
  • Ideal for audio, sonar, sensors, and other multi-channel analog applications

SoC FPAAs

  • Floating-Gate technology with large arrays of configurable analog blocks
  • Integrated digital logic and 16-bit microcontroller for complex analog computations
  • Supports large numbers of sensors or high-channel-count analog processing in a single chip
  • Perfect for sensor interfacing and processing, signal filtering, industrial control systems, audio and sonar signal classification, IoT, robotics and vector matrix multiplication (VMM)

Why Choose FPAAs

  • Analog Flexibility
    Program and update analog circuits in software for faster design iterations.  Reconfigurable FPAAs can be made into multi-use circuit applications with the same electronics, by in-circuit reprogramming. 
  • Rapid Prototyping
    Test new analog designs without the cost and delay of fabricating custom chips
  • System Efficiency
    Reduce power, cost, and board space with integrated SoC FPAA solutions
  • Wide Applications
    Designed for sensor interfacing, analog signal conditioning, filtering, audio and sonar processing, robotics, IoT, and low-power analog computing

How FPAAs Work

  • Configurable Analog Cores
    FPAAs contain pre-designed analog building blocks called Configurable Analog Cores. Okika’s design software allows the user to design and interconnect them with software cores to create user defined analog circuit functions.
  • Analog Equivalent to an FPGA
    While an FPGA works with digital logic gates, an FPAA works with analog components embedded directly inside the chip. This makes it ideal for designing complex analog circuits and analog computing solutions.
  • Reconfigurable Design
    FPAAs allow in-circuit updates and real-time analog prototyping. You can adjust filter parameters, amplification stages, or signal routing without using another fixed analog circuit built from fixed, discrete parts.
  • System-Level Efficiency Okika FPAAs deliver high analog performance, reduced power consumption, and lower per-unit cost through tightly integrated analog SoC architecture

Our Products

OTC2310K04-PIKA Raspberry Pi HAT with 4 AN231E04 Chips

OTC2310K04-PIKA Raspberry Pi HAT with 4 AN231E04 Chips

$156.00

The PIKA board simplifies multi-channel analog prototyping. With four independent FPAAs and flexible routing via onboard switches, it’s ideal for building signal-processing architectures directly on your Pi.

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AN231K04-QUAD4 Quad FlexAnalog™ FPAA development board for AN231E04

AN231K04-QUAD4 FlexAnalog™ FPAA Dev Board

$299.00

The AN231K04-QUAD4 board is designed for robust multi-channel analog prototyping. With four AN231E04 FPAAs, an integrated PIC32 microcontroller, and modular routing and isolation, it offers a powerful platform for complex embedded analog system development.

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Chameleon™ 8th Order Butterworth Lowpass Filter

Chameleon™ 8th Order Butterworth Lowpass Filter

$25.00

Precision 8th-order Butterworth low-pass filter modules built on FPAA technology, with characterized cut off frequencies from 10Hz to 100kHz, differential signal paths, and production-ready performance.

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