ADAU1467WBCPZ300 ADI SigmaDSP Digital Audio Processor 294MIPS 48-Ch Huge Memory ASRC SPDIF LFCSP-88

ADAU1467WBCPZ300 Product Overview

The ADAU1467WBCPZ300 is a flagship SigmaDSP digital audio processor from Analog Devices, supplied in an LFCSP-88 package. It features a 28/56-bit DSP engine running at 294 MIPS, with the largest memory in the series—12288 Words program RAM and 40960 Words parameter RAM—enabling highly complex multi-channel audio algorithms, complete signal processing chains, and massive libraries of filters, reverbs, and dynamics processors. The device also integrates an 8-channel asynchronous sample rate converter (ASRC) and an S/PDIF transceiver (1 receiver + 1 transmitter), greatly simplifying multi-clock-domain system design. It provides 8 serial audio input ports and 8 serial audio output ports, configurable as I2S or TDM, supporting up to 48 digital audio channels at sampling rates up to 192 kHz. Together with the SigmaStudio graphical development tool, users can implement audio routing, mixing, filtering, equalization, dynamics processing, and delays—without low-level coding. Control is via SPI or I2C, with a 1.2 V core and 3.3 V I/O supply and an on-chip PLL. The -40°C to +105°C operating temperature range makes it ideal for premium automotive audio, professional digital mixers, large-scale sound reinforcement, flagship TVs and soundbars, and any embedded audio system demanding extreme channel counts and algorithm complexity. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

ADAU1467WBCPZ300 Core Features

DSP Architecture: 28/56-bit SigmaDSP, 294 MIPS. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Huge Memory: Program RAM 12288 Words, Parameter RAM 40960 Words. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Digital Audio Channels: 8 serial inputs + 8 serial outputs, up to 48 channels. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

ASRC: 8-channel asynchronous sample rate converter. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

S/PDIF: Integrated 1 receiver + 1 transmitter. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Digital Audio I/F: I2S, TDM, left/right-justified. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Sampling Rate: Up to 192 kHz. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Control Interface: SPI, I2C. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Power Supply: 1.2 V core + 3.3 V I/O, on-chip PLL. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Software Tool: SigmaStudio graphical development, no coding required. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Package: LFCSP-88 (10×10 mm). The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Temperature Range: -40°C to +105°C (industrial). The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

ADAU1467WBCPZ300 Applications

Premium Automotive Audio: Multi-channel routing, active noise cancellation, engine harmonic elimination with massive channel count and ASRC, huge memory for advanced algorithms. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Large Digital Mixers & Sound Reinforcement: Extensive channel mixing, matrix routing, dynamics processing with abundant parameter space for fine tuning. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Flagship TVs & Soundbars: Virtual surround, multi-channel processing with direct S/PDIF, massive memory for complex immersive effects. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Professional Audio Equipment: Effects processors, audio matrices, active speaker systems meeting the most demanding algorithm requirements. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Complex Embedded Audio: Conferencing systems, smart home audio hubs requiring high algorithm capacity and flexible I/O. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

ADAU1467WBCPZ300 Key Advantages

Maximum Memory in Series: 12288 Words program RAM + 40960 Words parameter RAM for extremely complex multi-channel algorithm libraries. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

High Channel Count: 8-in/8-out ports, up to 48 digital channels for large-scale audio systems. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Integrated ASRC: 8-channel hardware ASRC seamlessly connects digital audio sources with different clocks. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

S/PDIF Transceiver: Direct coaxial/optical digital audio I/O, reducing external components. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

High Performance 294 MIPS: High-speed DSP core easily handles parallel multi-channel audio processing. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Industrial Wide Temperature: -40°C to +105°C, suitable for automotive and harsh industrial environments. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

Rich Ecosystem: Drag-and-drop SigmaStudio, extensive algorithm library, and reference designs. The ADAU1467WBCPZ300 is a top-tier audio processor. ADAU1467WBCPZ300 offers unmatched memory and channel capacity.

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FAQ:

1. What does the 12288 Words of program memory in the ADAU1467 actually mean, and how much bigger is it compared to the 1466?
   12288 Words of program RAM is 1.6× larger than the ADAU1466 (7680 Words). This means significantly more complex and complete signal processing chains can run on a single chip—simultaneously implementing 8 independent parametric EQs, multi-way crossovers, large FIR filters, complex reverb models, and dynamics processors without needing multiple DSP chips.

2. How many serial audio ports does this chip have? Can it really achieve 48 channels?
   It provides 8 serial input ports and 8 serial output ports. Each port can carry 8 channels in TDM8 mode, giving a theoretical maximum of 64 inputs and 64 outputs. In typical applications, up to 48 digital audio channels are supported, easily handling large-scale mixers or immersive surround systems.

3. What is the practical benefit of the integrated ASRC? Can it eliminate the need for external clocking?
   The 8-channel ASRC converts incoming digital audio streams with different sample rates (e.g., 44.1 kHz, 48 kHz, 96 kHz) to a fixed internal rate in real time. For systems mixing multiple sources—SPDIF, Bluetooth, USB audio—the ASRC avoids complex clock synchronization, greatly reducing external clock components and layout effort.

4. Can the S/PDIF transceiver operate simultaneously with other peripherals? Can it be repurposed as GPIO?
   Yes, the S/PDIF receiver and transmitter work concurrently. The receiver decodes digital audio from coaxial or optical inputs, while the transmitter outputs processed audio in S/PDIF format. If S/PDIF is not needed, these pins can be reconfigured as general-purpose I/O for additional design flexibility.

5. Is the ADAU1467 developed in SigmaStudio? How does that compare to SHARC programming?
   Absolutely. SigmaStudio is the native development tool for the ADAU1467. You build the entire audio processing chain by dragging and dropping algorithm blocks and connecting them graphically—no coding required. This is fundamentally different from SHARC’s C/C++/assembly workflow, offering an extremely low barrier to entry and enabling rapid prototyping by audio engineers.

6. What does the -40°C to +105°C industrial temperature range guarantee for my design?
   It ensures reliable operation in extreme environments—from frigid outdoor locations like car trunks and billboards to hot enclosed spaces like amplifier interiors. For automotive, outdoor audio, and industrial equipment, this wide-temperature specification directly impacts system reliability and longevity, preventing unexpected shutdowns or performance degradation due to temperature swings.

7. How do I send control commands to the ADAU1467? Can it communicate with a host MCU?
   It supports both SPI and I2C control interfaces and can connect directly to any MCU with SPI or I2C peripherals (e.g., STM32, ESP32). The host MCU reads and writes parameter registers inside the DSP to implement volume adjustments, effect switching, preset loading, and other real-time controls while the DSP focuses entirely on audio processing.

8. I want to build a soundbar with Bluetooth and HDMI ARC inputs. How many external components are needed?
   The ADAU1467’s internal ASRC and S/PDIF already handle most clock domain and digital interface issues. A Bluetooth module connects via I2S to a SPORT, and the HDMI ARC SPDIF output feeds the chip's S/PDIF receiver. With only external DACs/amplifiers, an SPI Flash (for program storage), and power supplies, you can build a complete multi-channel soundbar system with a remarkably streamlined BOM.

9. What is the typical power consumption? Does it need extra cooling?
   Typical power consumption is under 1 W, with an integrated PLL and LDO. In most applications, the PCB's copper planes provide sufficient heat dissipation without any additional heatsink. It is still good practice to include a solid ground plane and thermal vias under the chip to maintain optimal thermal performance.