
AN231E04 Dynamically reconfigurable FPAA chip with 4 CABs
AN231E04-QFNSP
AN231E04 FlexAnalog™ Field-Programmable Analog Array (FPAA) Integrated Circuit Component
• 10 Pack
Part Number: AN231E04-QFNSP
Order Quantity: 10 pieces
• Tray Packed (260 pieces)
Part Number: AN231E04-QFNTY
Order Quantity: 260 pieces
Order Packaging: 1 tray
• Reel Packed (1000 pieces)
Part Number: AN231E04-QFNTR
Order Quantity: 1,000 pieces
Order Packaging: 1 reel
• Box Packed (2600 pieces)
Part Number: AN231E04-QFNBTY
Order Quantity: 2,600 pieces
Order Packaging: 1 box (in trays)

AN231E04 Dynamically reconfigurable FPAA chip with 4 CABs
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.
Featured Highlights
- 2×2 Configurable Analog Block Matrix – Enables complex analog functions such as filtering, amplification, and summing.
- Programmable Interconnect Fabric – Route signals dynamically for flexible circuit topologies.
- Integrated Lookup Table (8×256-bit) – Supports waveform synthesis and nonlinear transformations.
- Seven Flexible I/O Cells – Each can act as input or output; four include differential amplifiers.
- Chopper-Stabilized Amplifier – Ultra-low offset for precision analog applications.
- Clock Generator Block – Manages multiple non-overlapping domains from a single input clock.
- Temperature-Compensated References – Bandgap generator for stable voltage references across conditions.
- SPI-like Configuration Interface – Fast, serial configuration from a microcontroller or DSP.
- Shadow Configuration Memory – Load new functions in the background without disrupting current operation.
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.
AN234E04 Integrated Circuit Block Diagram
Design Library & Automated Design Functions
The AN231E04 FPAA integrated circuit has access to a deep design library of analog components, plus the ability to easily configure low level blocks or higher level analog functions (such as filters, multipliers, etc). Through the AnadigmDesigner2 EDA software, the analog components and configurable functions are available.
FlexAnalog FPAA Design Library Examples
