My Inquiry
My Account
Analog Devices Inc. ADAU1381BCBZ-RL7
- Part No.:
- ADAU1381BCBZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 30-UFBGA, WLCSP
- Datasheet:
-
ADAU1381BCBZ-RL7.pdf
- Description:
- IC AUDIO CODEC STEREO LN 30WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,165
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADAU1381BCBZ-RL7 from Analog Devices is a low-noise 24-bit stereo audio codec with integrated 400 mW speaker amplifier, wind noise detection, dual-band ALC, and 6-band equalizer. It supports sampling rates from 8 kHz to 96 kHz, features pseudo-differential microphone inputs and optional PDM digital microphone interface, and targets battery-powered portable audio systems requiring high-fidelity recording and playback.
For engineers reviewing the ADAU1381BCBZ-RL7 datasheet, ADAU1381BCBZ-RL7 pinout, ADAU1381BCBZ-RL7 application, or ADAU1381BCBZ-RL7 equivalent, this page delivers verified technical context, real-world signal path specifications, package-aware layout guidance, and validated alternative options for audio subsystem design in compact consumer imaging and mobile devices.
Technical Context
The ADAU1381BCBZ-RL7 integrates independent 24-bit ADC and DAC paths with configurable PGA gain (0–32 dB), A-weighted SNR up to 105 dB (beep path), and THD+N as low as −90 dB (ADC at 3.3 V). Its programmable PLL accepts 11–20 MHz input clocks and generates core clocks for I²S/TDM/Left-Justified serial audio formats.
The device implements a dedicated sound engine supporting wind noise autofiltering, enhanced stereo capture (ESC), and real-time 6-band EQ with notch filter-configured via SigmaStudio GUI. Power management includes four operating modes (Normal, Power Saving, Extreme Power Saving, Enhanced Performance) with AVDD current ranging from 14.03 mA to 17.63 mA at 3.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC/DAC Resolution | 24-bit-enables >144 dB theoretical dynamic range for high-fidelity audio digitization and reconstruction |
| Speaker Output Power | 400 mW into 8 Ω-drives dynamic speakers directly without external amplification stage |
| Sampling Rate Range | 8 kHz to 96 kHz-supports voice, telephony, HD audio, and professional-grade playback |
| A-Weighted SNR (DAC → Line) | 103 dB at 3.3 V-meets high-end portable audio requirements with minimal audible noise floor |
| Microphone Input Type | Stereo pseudo-differential analog + optional PDM digital-reduces EMI in compact camera/video enclosures |
| Control Interface | I²C or SPI-enables flexible host MCU integration with register-level mute, gain, and processing control |
| Package | 32-lead, 5 mm × 5 mm LFCSP-surface-mount compatible with tight PCB area budgets in DSC/DVC form factors |
Pinout & Package
The ADAU1381BCBZ-RL7 uses a 32-lead, 5 mm × 5 mm LFCSP package with exposed thermal pad (EP). Pin numbering follows standard LFCSP convention; pin 1 is marked by dot or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MCKI | Master Clock Input | Accepts 11–20 MHz crystal or oscillator input for PLL-based clock generation |
| BCLK/GPIO2 | Bit Clock / General-Purpose I/O | Serial audio bit clock input/output; configurable as GPIO during non-audio operation |
| LRCLK/GPIO3 | Word Select Clock / General-Purpose I/O | Indicates left/right channel boundary; dual-function for system resource optimization |
| DAC_SDATA/GPIO0 | DAC Serial Data Output / GPIO | Transmits processed audio data to external DAC or DSP; software-controllable output state |
| ADC_SDATA/GPIO1 | ADC Serial Data Input / GPIO | Receives digitized audio from internal ADC or external source; supports TDM up to 8 channels |
| PDN | Power-Down Control | Active-low hardware pin enabling full device shutdown with <1 μA quiescent current |
| ADDR0/CDATA | I²C Address Select / SPI Data | Sets I²C slave address (0x34 or 0x35); functions as SPI data line in SPI mode |
| ADDR1/CLATCH | I²C Address Select / SPI Latch | Second I²C address bit; serves as SPI chip select latch in SPI configuration |
| SCL/CCLK | I²C Clock / SPI Clock | Shared clock line supporting both I²C (≤400 kHz) and SPI (≤25 MHz) protocols |
| SDA/COUT | I²C Data / SPI Output | Bi-directional I²C data line; outputs SPI read data or status flags |
| LMICP/RMICP | Left/Right Mic Non-Inverting Input | Pseudo-differential analog mic inputs with 500 kΩ input impedance and 0–32 dB PGA gain |
| LMICN/RMICN | Left/Right Mic Inverting Input | Completes differential pair; impedance varies with PGA gain setting (4–62 kΩ) |
| MICBIAS | Microphone Bias Voltage | Programmable 0.65× or 0.90× AVDD output (up to 2.97 V) for electret condenser microphones |
| AOUTL/AOUTR | Analog Line Output Left/Right | Low-impedance buffered outputs (1.0 Vrms full-scale at 3.3 V) driving 16 kΩ loads |
| SPP/SPN | Speaker Output Positive/Negative | Differential Class-D output delivering 400 mW into 8 Ω with THD+N ≤ −60 dB |
| AVDD1/AVDD2 | Analog Power Supplies | Must be tied together (1.8–3.65 V); powers ADC, DAC, PGA, and speaker driver stages |
| IOVDD | I/O Supply | 1.63–3.65 V logic supply supporting 1.8 V or 3.3 V interface voltage levels |
| DGND/AGND1/AGND2 | Digital & Analog Grounds | Separate ground pins minimize coupling between digital switching noise and analog signal paths |
| EP | Exposed Thermal Pad | Internally connected to AGND1; requires solid thermal via connection to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Wind Noise Detection & Autofiltering | Real-time spectral analysis identifies wind-induced low-frequency turbulence and applies adaptive notch filtering without host CPU intervention |
| Dual-Band Automatic Level Control (ALC) | Independent compression of low/mid and high bands preserves vocal clarity while preventing clipping during loud transients |
| Enhanced Stereo Capture (ESC) | Phase-aligned dual-mic processing improves spatial fidelity and directional rejection for video narration and interview recording |
| Software-Controllable Clickless Mute | Zero-crossing detection ensures mute/unmute transitions produce no audible pop or click in line/speaker outputs |
| SigmaStudio Graphical Configuration | Drag-and-drop DSP flow programming enables custom EQ, dynamics, mixing, and effects without firmware development |
Applications
| Digital Still Cameras | Digital Video Cameras |
|---|---|
|
Use Scenario: Capturing synchronized audio during high-resolution still image bursts with flash-triggered timing constraints. IC Role / Device Role / Timing Role: Audio codec providing low-latency, low-noise analog mic capture, real-time wind noise suppression, and direct speaker playback for review audio. Use Value: 99.2 dB ADC dynamic range and −98 dB interchannel isolation preserve stereo imaging fidelity in compact optical body designs. |
Use Scenario: Recording stereo commentary and ambient sound during 1080p/4K video capture with variable lighting and outdoor wind exposure. IC Role / Device Role / Timing Role: Integrated audio subsystem handling mic preamp, dual-band ALC, 6-band EQ, and 400 mW speaker drive in single-chip solution. Use Value: Wind noise autofiltering and ESC improve intelligibility of spoken content without requiring post-processing or external DSP. |
| Portable Voice Recorders | Smart Home Camera Systems |
|
Use Scenario: Long-duration mono/stereo voice logging with battery life optimization and acoustic echo cancellation readiness. IC Role / Device Role / Timing Role: Low-power audio front-end with extreme power saving mode (14.03 mA @ 1.8 V) and software-register standby control. Use Value: Configurable 8–96 kHz sampling and 95 dB digital attenuation range support both narrowband speech and wideband music capture. |
Use Scenario: Two-way audio communication with local playback of alerts and remote microphone streaming over Wi-Fi/Bluetooth. IC Role / Device Role / Timing Role: Dual-path audio processor routing analog mic input to network encoder while mixing beep tones into speaker output. Use Value: Beep path SNR of 105 dB (A-weighted) and −90 dB mute attenuation enable clean notification tones without masking ambient monitoring audio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stereo audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK4642EN | Lacks integrated speaker amplifier; 30 mW line driver only; no wind noise detection or ESC | Suitable for line-out-only systems with external Class-D amp; requires separate ALC/EQ implementation | Choose when speaker drive is handled externally and ultra-low cost is prioritized over integrated processing |
| TLV320AIC3106IRHBT | Higher 102 dB DAC SNR but no PDM mic input; 200 mW speaker drive (half power); no built-in wind filter | Better suited for headset-centric designs with analog mic bias; less optimal for outdoor video capture | Prefer when primary use case is wired headset audio with high SNR line output and lower power envelope |
Compared with AK4642EN and TLV320AIC3106IRHBT, the ADAU1381BCBZ-RL7 uniquely combines 400 mW speaker drive, wind noise autofiltering, and ESC in a single LFCSP package-reducing BOM count and PCB area for portable imaging audio where environmental robustness is critical.
Availability
ADAU1381BCBZ-RL7 is available at Aetrix Electronics and suitable for digital still cameras, digital video cameras, portable voice recorders, and smart home camera systems requiring stable component supply and long-term production continuity.
Supply support for ADAU1381BCBZ-RL7 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 is a global leader in high-performance analog, mixed-signal, and DSP technologies, serving precision instrumentation, industrial automation, communications, and audio markets since 1965.
The ADAU1381BCBZ-RL7 belongs to Analog Devices' SigmaDSP® audio codec family, designed specifically for space-constrained portable imaging and mobile audio applications demanding low-noise capture, intelligent processing, and integrated power amplification.
FAQ
What is the maximum speaker output power of the ADAU1381BCBZ-RL7?
The ADAU1381BCBZ-RL7 delivers 400 mW differential output power into an 8 Ω load at 3.3 V AVDD, with THD+N maintained at ≤−60 dB. This specification is measured under standard conditions per Table 2 in the Rev. B datasheet and enables direct driving of small dynamic speakers without external amplification.
Does the ADAU1381BCBZ-RL7 support digital microphone inputs?
Yes, the ADAU1381BCBZ-RL7 supports optional stereo pulse-density modulation (PDM) digital microphone inputs, as confirmed in the FEATURES section and Figure 1 functional block diagram. The PDM interface operates alongside analog mic inputs and is configurable via register settings in the sound engine.
What clock frequencies does the ADAU1381BCBZ-RL7 PLL accept?
The ADAU1381BCBZ-RL7 PLL supports input master clock (MCLK) frequencies from 11 MHz to 20 MHz, as specified in the GENERAL DESCRIPTION and Table 7. This range enables compatibility with common crystal oscillators and allows generation of all standard audio sample rates (8–96 kHz) in integer or fractional-N modes.
How is wind noise handled in the ADAU1381BCBZ-RL7?
The ADAU1381BCBZ-RL7 implements dedicated wind noise detection and autofiltering within its sound engine, as highlighted in the FEATURES list and Theory of Operation section. This function operates autonomously using spectral analysis to identify wind-induced low-frequency energy and applies adaptive notch filtering without host processor involvement.
What package type is used for the ADAU1381BCBZ-RL7?
The ADAU1381BCBZ-RL7 uses a 32-lead, 5 mm × 5 mm LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad, as stated in the FEATURES section and confirmed in the Outline Dimensions section (Page 84). This package is distinct from the 30-ball WLCSP option and is the variant designated by the "CBZ" suffix.
ADAU1381BCBZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 30-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Stereo Audio
- Data Interface:
- SPI
- Resolution (Bits):
- 24 b
- Number of ADCs / DACs:
- 2 / 2
- Sigma Delta:
- No
- S/N Ratio, ADCs / DACs (db) Typ:
- 97 / 100
- Dynamic Range, ADCs / DACs (db) Typ:
- 96.5 / 100
- Voltage - Supply, Analog:
- 1.8V ~ 3.65V
- Voltage - Supply, Digital:
- 1.63V ~ 3.65V
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 30-WLCSP (3.4x2.64)
ADAU1381BCBZ-RL7 FAQ
1.How can I place an order for ADAU1381BCBZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADAU1381BCBZ-RL7 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 ADAU1381BCBZ-RL7 reliable?
The price and inventory of ADAU1381BCBZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADAU1381BCBZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADAU1381BCBZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADAU1381BCBZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADAU1381BCBZ-RL7?
ADAU1381BCBZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADAU1381BCBZ-RL7 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 ADAU1381BCBZ-RL7?
For technical support, including ADAU1381BCBZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADAU1381BCBZ-RL7 requirements.
6.How does Aetrix verify that ADAU1381BCBZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADAU1381BCBZ-RL7 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 ADAU1381BCBZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADAU1381BCBZ-RL7?
All ADAU1381BCBZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADAU1381BCBZ-RL7, 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 ADAU1381BCBZ-RL7 part is unused and in its original packaging.
Return procedure for ADAU1381BCBZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADAU1381BCBZ-RL7 Tags
-
NAU88C22YG
Nuvoton Technology Corporation
-
TLV320AIC3100IRHBR
Texas Instruments
-
DA7212-01UM2
Renesas
-
NAU8810YG
Nuvoton Technology Corporation
-
DA7218-00U32
Renesas
-
CMX655DQ6-TR1K
CML Micro
-
SGTL5000XNLA3
NXP Semiconductors
-
TLV320AIC3104IRHBR
Texas Instruments
-
MAX9867EWV+T
Analog Devices Inc./Maxim Integrated
-
MAX9860ETG+T
Analog Devices Inc./Maxim Integrated
-
TLV320AIC3106IRGZR
Texas Instruments
-
SGTL5000XNLA3R2
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
