The AN231E04 is a versatile Field Programmable Analog Array (FPAA) designed for real-time analog signal processing. With a 2×2 matrix of Configurable Analog Blocks (CABs), programmable routing, and support for complex functions like filtering, waveform synthesis, and nonlinear mapping, it provides a flexible platform for embedded analog system design.

Technical Specifications

Technology Switched-Capacitor
Number of Cores 4
Power Supply 3.3V
Unity Gain Bandwidth 18 MHz
Signal Path Differential
ADC Resolution 8
ADC Data Rate 250ksps
Analog IO 4
Digital IO 3
Analog Configuration RAM

FAQs

What’s the difference between FPAAs and FPGAs?

FPAAs process real-world analog signals (voltages, currents) using configurable analog components, while FPGAs process digital logic. FPAAs are ideal for applications where analog processing is required close to the source, without digitization overhead.

How is it programmed?

The AN231E04 is programmed using AnadigmDesigner2® software, which allows you to graphically design analog functions and export configuration data. The device is then configured via a serial digital interface (SPI-like protocol).

Does the AN231E04 retain its configuration after power-down?

No. The AN231E04 uses volatile SRAM for its configuration. It must be reloaded at startup from an external microcontroller or memory source, such as a Flash chip or MCU.

What kind of analog functions can I implement?

You can design filters (low-pass, high-pass, band-pass), amplifiers, comparators, modulators, mixers, rectifiers, and more. Functions can be adaptive and dynamically reconfigured during operation.

What is the operating voltage range?

The typical operating voltage is 3.3V for both analog and digital sections.

How fast is the AN231E04 FPAA?

The device supports internal analog sample rates up to 16 MHz, making it suitable for audio, low-to-mid frequency RF, and industrial signal conditioning.

Can I chain multiple AN231E04 devices together?

Yes. Multiple devices can be chained for larger or multi-channel analog systems, with coordinated control and signal routing handled externally.

What package is the AN231E04 available in?

It is available in a 44-pin QFP package, suitable for PCB mounting in embedded systems or prototyping platforms.