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Analog Devices Inc. ADAU1401AWBSTZ
- Part No.:
- ADAU1401AWBSTZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 48-LQFP
- Datasheet:
-
ADAU1401AWBSTZ.pdf
- Description:
- IC AUDIO PROC 28/56BIT 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:171
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Product details
Overview
ADAU1401AWBSTZ from Analog Devices is a 28-/56-bit SigmaDSP audio processor with integrated dual 24-bit Σ-Δ ADCs (SNR = 100 dB, THD+N = −83 dB) and quad 24-bit Σ-Δ DACs (SNR = 104 dB, THD+N = −90 dB), supporting up to 192 kHz sampling in automotive-grade 48-lead LQFP packaging. It performs real-time equalization, crossover, bass enhancement, and speaker compensation for embedded audio systems.
For engineers reviewing the ADAU1401AWBSTZ datasheet, ADAU1401AWBSTZ pinout, ADAU1401AWBSTZ application, or ADAU1401AWBSTZ equivalent, key selection criteria include its self-boot capability from serial EEPROM, I²C/SPI control interface, on-chip 1.8 V regulator, PLL clock generation from 64×/256×/384×/512× fS, and GPIO-configurable multipurpose pins for system integration.
Technical Context
The ADAU1401AWBSTZ implements a fully programmable 50 MIPS DSP core executing signal flow graphs built in SigmaStudio™, with 56-bit accumulator precision for low-level dynamics processing. Its dual ADCs accept 100 μArms current-mode inputs (2 Vrms full-scale with 18 kΩ resistor), while quad DACs deliver 0.9 Vrms analog outputs with −100 dB crosstalk.
It integrates a crystal oscillator and PLL for master clock synthesis, supports I²S, left/right-justified, and TDM digital audio formats across eight input/output channels, and features an auxiliary 4-input mux ADC (2.95 V FS, ±0.5 LSB INL) plus eight GPIOs configurable as digital controls or serial data lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DSP Core | 28-/56-bit, 50 MIPS - enables double-precision biquad filtering and multiband dynamics at 192 kHz sample rate |
| ADC Performance | 2 × 24-bit, SNR = 100 dB A-wtd, THD+N = −83 dB - supports high-fidelity microphone or line input capture |
| DAC Performance | 4 × 24-bit, SNR = 104 dB A-wtd, THD+N = −90 dB - delivers studio-grade analog output to power amps or codecs |
| Sampling Rate | Up to 192 kHz - accommodates high-resolution audio playback and professional monitoring |
| Supply Voltages | AVDD/PVDD/IOVDD = 3.3 V, DVDD = 1.8 V - compatible with standard automotive and industrial 3.3 V systems |
| Package | 48-lead LQFP, qualified for −40°C to +105°C ambient - meets AEC-Q100 Grade 2 requirements for head units and in-seat systems |
| Self-Boot | Direct EEPROM loading via I²C/SPI - eliminates external microcontroller for standalone operation |
Pinout & Package
ADAU1401AWBSTZ uses a 48-lead plastic LQFP package (7 mm × 7 mm, 0.5 mm pitch), thermally rated at θJA = 72°C/W and qualified for automotive applications (−40°C to +105°C ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADC0 / ADC1 | Analog Audio Input | Current-input pins (100 μArms FS); external 18 kΩ resistor sets 2 Vrms full-scale voltage range |
| VOUT0–VOUT3 | Analog Audio Output | Four differential-capable DAC outputs; each delivers 0.9 Vrms with −100 dB channel crosstalk |
| MCLKI / OSCO | Master Clock Input / Crystal Oscillator Output | Accepts 12.288 MHz crystal or external clock; internal PLL generates precise audio clocks |
| MP0–MP11 | Multipurpose I/O | Configurable as SDATA_IN/OUT, LRCLK/BCLK, AUX_ADC inputs, or GPIO - enables flexible routing without external logic |
| ADDR0 / ADDR1 | I²C/SPI Addressing | Set I²C address (up to 4 devices) or SPI data direction; supports daisy-chained EEPROM writeback |
| SELFBOOT / RESET | Boot Mode Control / Active-Low Reset | HIGH on SELFBOOT enables EEPROM auto-load at power-up; RESET initiates cold start with register reset |
Key Features
| Feature | Design Value |
|---|---|
| Graphical Programming | SigmaStudio™ flow-based design enables drag-and-drop biquad filters, dynamics processors, and GPIO controls without C coding |
| Standalone Operation | Self-boot from serial EEPROM preserves parameter state across power cycles; writeback on shutdown stores runtime adjustments |
| Flexible Digital Audio I/O | Eight-channel serial ports support I²S, TDM, and custom left/right-justified formats - allows glueless expansion with external ADC/DACs |
| On-Chip Voltage Regulation | Integrated 1.8 V regulator powered from 3.3 V AVDD/PVDD - reduces BOM count and simplifies power sequencing |
| Auxiliary Control Interface | 4-input mux ADC (2.95 V FS, ±0.5 LSB INL) + 8 GPIOs - enables knob, switch, and sensor interfacing without external MCU |
Applications
| Automotive Head Units | Multimedia Speaker Systems |
|---|---|
Use Scenario: In-dash infotainment system requiring multi-zone audio processing, EQ, and speaker protection. IC Role / Device Role / Timing Role: Primary audio DSP handling ADC acquisition, real-time crossover, bass management, and DAC output timing synchronized to 12.288 MHz MCLK. Use Value: Compensates for cabin acoustics and speaker nonlinearity using 56-bit precision filters, improving perceived clarity and loudness within AEC-Q100-compliant thermal envelope. | Use Scenario: Powered bookshelf speaker with active 3-way crossover and room correction. IC Role / Device Role / Timing Role: Central signal processor managing dual analog inputs, four DAC outputs, and GPIO-controlled volume/mute functions. Use Value: Delivers 104 dB DAC SNR and −90 dB THD+N to drive Class-D amplifiers directly, enabling high-fidelity playback without external op-amp buffering. |
| MP3 Player Speaker Docks | Digital Televisions |
Use Scenario: Compact dock system accepting digital audio via I²S and enhancing stereo imaging for near-field listening. IC Role / Device Role / Timing Role: Audio co-processor receiving I²S from host SoC, applying stereo widening and dynamic range compression before analog output. Use Value: Uses 50 MIPS processing headroom to run multiple biquad stages and delay compensation at 48 kHz, preserving transient response while boosting perceived loudness. | Use Scenario: Flat-panel TV audio subsystem needing low-latency processing for dialogue enhancement and virtual surround. IC Role / Device Role / Timing Role: Dedicated audio engine performing adaptive EQ, lip-sync-aligned delay, and speaker compensation using internal 40 ms RAM buffer. Use Value: Leverages 28-bit × 28-bit multiplier with 56-bit accumulator to maintain >95 dB SNR even during aggressive multiband compression at 96 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADAU1452WBCPZ | Higher performance: 295 MIPS, 128 kB program RAM, 256 kB data RAM, 8 ADC/8 DAC channels | Targeted at premium automotive ADAS audio, high-channel-count studio monitors, and immersive spatial audio systems | Select when >50 MIPS processing, larger memory, or more I/O channels are required; not pin-compatible |
| TAS5825MRTWR | Dedicated Class-D amplifier with integrated 28-bit DSP (not standalone processor); no ADCs, only 2 DACs, fixed-function audio blocks | Optimized for direct-drive smart speakers and battery-powered portable audio with integrated power stage | Select for cost-sensitive, space-constrained designs where amplification and basic EQ are sufficient; lacks programmability and analog I/O flexibility |
Compared with ADAU1401AWBSTZ, ADAU1452WBCPZ provides scalable processing for complex multi-zone systems but requires PCB redesign, while TAS5825MRTWR reduces component count in amplifier-integrated applications but sacrifices SigmaStudio configurability and analog I/O depth.
Availability
ADAU1401AWBSTZ is available at Aetrix Electronics and suitable for automotive head units, multimedia speaker systems, and digital televisions requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADAU1401AWBSTZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and audio systems.
The ADAU1401A product line delivers fully programmable SigmaDSP audio processors optimized for real-time acoustic correction in resource-constrained embedded platforms, targeting automotive infotainment, consumer audio, and professional monitoring equipment.
FAQ
What is the primary function of the ADAU1401AWBSTZ in an audio system?
The ADAU1401AWBSTZ serves as a complete, self-contained audio signal processor that performs real-time equalization, crossover, bass enhancement, delay compensation, and speaker protection. It integrates two 24-bit ADCs and four 24-bit DACs, enabling end-to-end analog-to-analog processing without external converters. Its 50 MIPS 28-/56-bit DSP core executes SigmaStudio-designed algorithms, making ADAU1401AWBSTZ ideal for embedded systems where acoustic tuning must adapt to physical speaker limitations and listening environments.
Does the ADAU1401AWBSTZ support self-boot from external EEPROM?
Yes, the ADAU1401AWBSTZ supports autonomous self-boot from external serial EEPROM via its I²C or SPI interface. When the SELFBOOT pin is held HIGH during power-up, the device automatically loads its program and parameter configuration from the EEPROM, enabling fully standalone operation. The ADAU1401AWBSTZ can also write back current parameter values to EEPROM on power-down using the WB (writeback) function on ADDR1, preserving user-adjusted settings such as volume or EQ presets across power cycles.
What are the supported digital audio interface modes for the ADAU1401AWBSTZ?
The ADAU1401AWBSTZ supports I²S, left-justified, right-justified, and TDM serial audio formats across its eight-channel digital input and output ports. These ports are configurable via SigmaStudio and hardware pin strapping, allowing flexible routing of up to eight data lanes. The device accepts master clock inputs at 64×, 256×, 384×, or 512× the sample rate (e.g., 12.288 MHz for 48 kHz), and its PLL ensures jitter-free synchronization. This makes ADAU1401AWBSTZ compatible with SoCs, codecs, and external ADC/DACs without level-shifting or protocol translation.
How does the auxiliary ADC in the ADAU1401AWBSTZ enhance system functionality?
The ADAU1401AWBSTZ includes a 4-input multiplexed auxiliary ADC with 2.95 V full-scale range, ±0.5 LSB INL, and 17.8–42 kΩ input impedance. It enables direct sensing of potentiometers, thermistors, or DC control voltages without external signal conditioning. Inputs map to MP2–MP3 and MP8–MP9 pins, allowing simultaneous use with serial audio or GPIO functions. This feature lets ADAU1401AWBSTZ implement analog volume control, temperature-compensated EQ, or safety interlocks - reducing MCU dependency and simplifying firmware for audio-centric applications.
Is the ADAU1401AWBSTZ qualified for automotive applications?
Yes, the ADAU1401AWBSTZ is qualified for automotive applications per AEC-Q100 Grade 2 standards (−40°C to +105°C ambient operating temperature). Its 48-lead LQFP package, integrated 1.8 V regulator, and robust ESD tolerance (±2 kV HBM) meet stringent automotive reliability requirements. The device supports self-boot, failsafe reset behavior, and stable operation under variable supply conditions (AVDD 2.97–3.63 V, DVDD 1.62–1.98 V), making ADAU1401AWBSTZ suitable for head units, rear-seat entertainment, and in-seat sound systems where thermal resilience and long-term supply continuity are critical.
ADAU1401AWBSTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SigmaDSP®
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Sigma
- Interface:
- I2C, SPI
- Clock Rate:
- 50MHz
- Non-Volatile Memory:
- -
- On-Chip RAM:
- 12kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 1.80V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LQFP (7x7)
ADAU1401AWBSTZ FAQ
1.How can I place an order for ADAU1401AWBSTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADAU1401AWBSTZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADAU1401AWBSTZ reliable?
The price and inventory of ADAU1401AWBSTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADAU1401AWBSTZ is usually 5 days.
3.What payment methods are accepted for ADAU1401AWBSTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADAU1401AWBSTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADAU1401AWBSTZ?
ADAU1401AWBSTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADAU1401AWBSTZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADAU1401AWBSTZ?
For technical support, including ADAU1401AWBSTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADAU1401AWBSTZ requirements.
6.How does Aetrix verify that ADAU1401AWBSTZ is sourced from the original manufacturer or authorized distributors?
All ADAU1401AWBSTZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADAU1401AWBSTZ meets industry standards.
7.What is the process for return or replacement of ADAU1401AWBSTZ?
All ADAU1401AWBSTZ units undergo pre-shipment inspection (PSI). If there is an issue with ADAU1401AWBSTZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADAU1401AWBSTZ part is unused and in its original packaging.
Return procedure for ADAU1401AWBSTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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