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Analog Devices Inc. ADAU1373BCBZ-RL
- Part No.:
- ADAU1373BCBZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 81-UFBGA, WLCSP
- Datasheet:
-
ADAU1373BCBZ-RL.pdf
- Description:
- IC CODEC LP CLASS G HP 81WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,811
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Product details
Overview
ADAU1373BCBZ-RL from Analog Devices is a low-power stereo audio codec with integrated SigmaDSP® core, featuring 1 stereo ADC and 2 stereo DACs (8–48 kHz), true ground-centered Class-G headphone amplifier (2 × 50 mW @ 16 Ω, 1.8 V), and filterless Class-D speaker amplifier (2 × 880 mW @ 8 Ω, 3.6 V), deployed in mobile phone baseband/audio subsystems for simultaneous record/playback with digital signal processing.
For engineers reviewing the ADAU1373BCBZ-RL datasheet, ADAU1373BCBZ-RL pinout, ADAU1373BCBZ-RL application, or ADAU1373BCBZ-RL equivalent, key selection criteria include dual DAC architecture with independent mixing, ASRC-enabled multi-rate digital audio I/O (3 ports), low-power operation (7 mW record / 6 mW playback @ 48 kHz), and WLCSP-81 package compatibility with space-constrained portable designs.
Technical Context
The ADAU1373BCBZ-RL integrates a fixed-function DSP (FDSP) with programmable seven-band equalizer, dynamic range control (DRC), bass/3D enhancement, and digital ALC - all configurable via SigmaStudio™. Its dual PLL architecture supports independent clock domains for ADC, DAC, and digital audio interfaces, locking to input clocks from 8 kHz to 27 MHz.
Analog input flexibility includes 8 single-ended or 4 differential channels with PGA gain range −12 dB to +18 dB; two microphone bias supplies with current sense; and support for up to four digital microphones across two DMIC interfaces. Output routing enables concurrent line-out, headphone, speaker, and earpiece drive with independent volume control and mixing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC/DAC Resolution | 24-bit, enabling high-fidelity audio capture and playback with >94 dB SNR (typ) |
| Sampling Rate Range | 8 kHz to 48 kHz, supporting voice, music, and mixed-mode mobile use cases |
| Headphone Output Power | 2 × 50 mW into 16 Ω @ 1.8 V, 10% THD - eliminates DC-blocking capacitors via true ground-centered Class-G |
| Speaker Output Power | 2 × 880 mW into 8 Ω @ 3.6 V, 10% THD - filterless Class-D reduces external component count |
| Digital Audio Interfaces | 3 serial ports (A/B/C) with ASRC, supporting I²S/PCM/right-justified/left-justified formats |
| Power Consumption | 7 mW (record), 6 mW (playback) @ 48 kHz, 1.8 V - optimized for battery-sensitive portable systems |
| Package | 4.05 mm × 3.82 mm, 81-ball WLCSP, 0.4 mm pitch - ultra-compact footprint for thin mobile PCBs |
Pinout & Package
ADAU1373BCBZ-RL uses a 4.05 mm × 3.82 mm, 81-ball Wafer-Level Chip Scale Package (WLCSP) with 0.4 mm ball pitch, designed for fine-pitch SMT assembly in high-density portable applications. Ball mapping follows standard Analog Devices WLCSP layout with dedicated analog/digital/power grounds and supply rails.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MCLK1 / MCLK2 | Master Clock Inputs | Accept independent crystal or oscillator inputs (8 kHz–27 MHz) for PLLA/PLLB clock generation |
| BCLKA/BCLKB/BCLKC | Bit Clock Inputs/Outputs | Provide frame-synchronized timing for each of three digital audio ports |
| SDATAINA/SDATAINB/SDATAINC | Digital Audio Inputs | Receive I²S/PCM data streams with ASRC compensation for asynchronous source rates |
| SDATAOUTA/SDATAOUTB/SDATAOUTC | Digital Audio Outputs | Transmit processed audio to baseband processor, BT SoC, or other peripherals |
| HPL / HPR | Headphone Driver Outputs | True ground-centered differential outputs driving stereo headphones without coupling caps |
| SPKLP/SPKLN/SPKRP/SPKRN | Speaker Amplifier Outputs | Filterless Class-D outputs requiring only ferrite beads (no LC filters) for 8 Ω loads |
| DMIC1_2_DATA / DMIC3_4_DATA | Digital Microphone Data | Support PDM input from up to four digital microphones (two per interface) |
| I2C SCL/SDA | Control Interface | Two-wire interface for register configuration, firmware loading, and real-time parameter updates |
Key Features
| Feature | Design Value |
|---|---|
| Integrated SigmaDSP® Core | Enables real-time EQ, multiband compression, limiting, and acoustic compensation without host CPU overhead |
| Asynchronous Sample Rate Converters (ASRC) | Allows seamless integration of audio sources operating at different sampling rates (e.g., BT headset @ 44.1 kHz + baseband @ 48 kHz) |
| Programmable Seven-Band Equalizer | Per-channel parametric EQ with user-defined center frequencies, Q, and gain for speaker/microphone response correction |
| Dual Independent PLLs | Eliminates need for multiple external crystals by generating all internal clocks from one or two reference inputs |
| Low-Power Analog Front End | PGA gain control (−12 dB to +18 dB) and mic bias with current sense enable robust noise-immune microphone interfacing |
Applications
| Mobile Handset Audio Subsystem | Tablet Media Playback System |
|---|---|
Use Scenario: Simultaneous voice call (mic input + earpiece output) and background music playback (DAC → speaker/headphones). IC Role / Device Role / Timing Role: Central audio hub managing ADC capture, DSP-enhanced playback, and multi-output routing with independent clock domains. Use Value: Single-chip solution reduces BOM count and PCB area while maintaining <10% THD at full output power across all transducers. |
Use Scenario: High-fidelity stereo media playback with loudspeaker output and optional headphone monitoring during video streaming. IC Role / Device Role / Timing Role: Dual DAC + Class-D speaker driver + Class-G headphone amp operating from shared 3.6 V rail with independent volume control. Use Value: Delivers 880 mW/channel speaker power and 50 mW/channel headphone drive without external filtering or DC-blocking capacitors. |
| eBook Reader Voice Feedback | Portable Navigation Device Audio |
Use Scenario: Text-to-speech output through mono earpiece or small speaker with adaptive gain control for ambient noise. IC Role / Device Role / Timing Role: Digital microphone input → DSP-based ALC/DRC → earpiece amplifier with programmable HPF for voice band optimization. Use Value: Maintains intelligible speech output across varying battery voltage (1.8–3.6 V) and temperature (−40°C to +85°C). |
Use Scenario: Turn-by-turn navigation prompts played over vehicle speaker or Bluetooth headset, synchronized with GPS timing. IC Role / Device Role / Timing Role: ASRC-enabled digital audio port bridges navigation SoC (44.1 kHz) to BT controller (48 kHz) with zero buffer underrun. Use Value: Eliminates audio glitches during sample rate transitions using hardware-accelerated asynchronous conversion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK4642EN | Lacks integrated DSP core and ASRC; single DAC; no digital microphone interface | Suitable for basic playback-only systems without real-time audio processing | Select when cost sensitivity outweighs need for on-chip EQ/DRC or multi-mic support |
| TLV320AIC3106IRHBT | Higher power consumption (12 mW playback); no Class-D speaker amp; smaller PGA range (−12 dB to +30 dB) | Better suited for wired headset-centric designs with external speaker drivers | Choose if design requires higher analog gain headroom and prioritizes I²C configurability over integrated amplification |
Compared with AK4642EN and TLV320AIC3106IRHBT, ADAU1373BCBZ-RL uniquely combines low-power dual-DAC playback, integrated SigmaDSP®, filterless Class-D speaker drive, and digital microphone support - making it optimal for feature-rich, space-constrained mobile audio subsystems requiring autonomous signal conditioning.
Availability
ADAU1373BCBZ-RL is available at Aetrix Electronics and suitable for mobile handset audio subsystems, tablet media playback systems, eBook reader voice feedback, and portable navigation device audio requiring stable component supply, long-term lifecycle support, and consistent WLCSP-81 packaging.
Supply support for ADAU1373BCBZ-RL 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 leader in high-performance analog, mixed-signal, and DSP technology, headquartered in Norwood, MA, serving industrial, automotive, communications, and consumer markets since 1965.
The ADAU1373BCBZ-RL belongs to Analog Devices' SigmaDSP® audio codec family, engineered specifically for battery-powered portable devices needing integrated audio conversion, amplification, and real-time signal processing in minimal footprint.
FAQ
What is the primary function of the ADAU1373BCBZ-RL in a mobile system?
The ADAU1373BCBZ-RL serves as a fully integrated audio hub combining stereo ADC, dual stereo DAC, Class-G headphone amplifier, filterless Class-D speaker amplifier, and SigmaDSP® processing. In mobile systems, ADAU1373BCBZ-RL handles simultaneous recording (e.g., voice call), playback (e.g., music), and real-time audio enhancement - all within a single 4.05 mm × 3.82 mm WLCSP package.
Does the ADAU1373BCBZ-RL support digital microphones?
Yes, ADAU1373BCBZ-RL supports up to four PDM digital microphones via two dedicated DMIC interfaces (DMIC1_2_DATA and DMIC3_4_DATA), each capable of handling two microphones. It includes clock generation (DMIC_CLK) and built-in decimation filters, eliminating the need for external PDM-to-I²S converters in the signal chain.
What makes the headphone amplifier in ADAU1373BCBZ-RL "true ground-centered"?
The ADAU1373BCBZ-RL's headphone amplifier uses a true ground-centered Class-G architecture, meaning its output swings symmetrically around 0 V without requiring DC-blocking capacitors. This reduces component count, saves PCB space, and avoids low-frequency phase shift or distortion introduced by coupling caps - a critical advantage in slim mobile form factors.
How many independent digital audio interfaces does ADAU1373BCBZ-RL provide?
ADAU1373BCBZ-RL provides three fully independent serial digital audio interfaces (Ports A, B, C), each supporting I²S, PCM, right-justified, or left-justified formats. Each port includes its own BCLK, LRCLK, and SDATA lines, plus integrated ASRC to handle asynchronous sampling rates - enabling flexible interconnection with baseband processors, Bluetooth SoCs, and auxiliary codecs.
Is the ADAU1373BCBZ-RL compatible with SigmaStudio™ development software?
Yes, ADAU1373BCBZ-RL is fully supported by Analog Devices' SigmaStudio™ graphical development environment. Engineers use SigmaStudio™ to configure the fixed-function DSP (FDSP), program seven-band EQ, set DRC parameters, define signal routing, and generate custom audio processing flows - all compiled and downloaded to ADAU1373BCBZ-RL via I²C without host processor involvement.
ADAU1373BCBZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 81-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Audio
- Data Interface:
- I2C, Serial
- Resolution (Bits):
- 24 b
- Number of ADCs / DACs:
- 1 / 2
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 96 / 96
- Dynamic Range, ADCs / DACs (db) Typ:
- 96 / 96
- Voltage - Supply, Analog:
- 1.62V ~ 1.98V
- Voltage - Supply, Digital:
- 1.08V ~ 1.98V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 81-WLCSP (4.05x3.82)
ADAU1373BCBZ-RL FAQ
1.How can I place an order for ADAU1373BCBZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADAU1373BCBZ-RL 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 ADAU1373BCBZ-RL reliable?
The price and inventory of ADAU1373BCBZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADAU1373BCBZ-RL is usually 5 days.
3.What payment methods are accepted for ADAU1373BCBZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADAU1373BCBZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADAU1373BCBZ-RL?
ADAU1373BCBZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADAU1373BCBZ-RL 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 ADAU1373BCBZ-RL?
For technical support, including ADAU1373BCBZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADAU1373BCBZ-RL requirements.
6.How does Aetrix verify that ADAU1373BCBZ-RL is sourced from the original manufacturer or authorized distributors?
All ADAU1373BCBZ-RL 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 ADAU1373BCBZ-RL meets industry standards.
7.What is the process for return or replacement of ADAU1373BCBZ-RL?
All ADAU1373BCBZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADAU1373BCBZ-RL, 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 ADAU1373BCBZ-RL part is unused and in its original packaging.
Return procedure for ADAU1373BCBZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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