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Analog Devices Inc. AD2425WCCSZ-RL
- Part No.:
- AD2425WCCSZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Audio Special Purpose
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD2425WCCSZ-RL.pdf
- Description:
- SINGLE SLAVE SERIAL AUDIO I/F W/
- Quantity:
- Payment:
- Shipping:
Inventory:3,674
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Product details
Overview
AD2425WCCSZ-RL from Analog Devices is an automotive-grade A2B transceiver configured as a master-capable node for synchronous multichannel audio transport over single twisted-pair cable, supporting up to 32 upstream/downstream TDM channels, 4 PDM microphone inputs, and I²C-based remote register access. It enables low-latency, phase-aligned audio distribution in active noise cancellation systems.
For engineers reviewing the AD2425WCCSZ-RL datasheet, AD2425WCCSZ-RL pinout, AD2425WCCSZ-RL application, or AD2425WCCSZ-RL equivalent, key selection criteria include master-mode capability, PDM microphone input count, TDM channel depth, phantom power support, and A2B bus topology compliance.
Technical Context
The AD2425WCCSZ-RL implements a full-duplex A2B transceiver with dual TRX blocks (A and B), enabling daisy-chain connectivity toward both master and last-slave directions. Its integrated PLL generates synchronized BCLK and SYNC signals across all nodes, maintaining phase alignment for time-critical audio processing.
It embeds I²C control traffic within the A2B data stream, allowing host-side configuration of slave registers without dedicated control wiring. The device supports configurable I²S/TDM/PDM data rates and provides two independent voltage regulators (VREG1/VREG2) for local power management at slave nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus Role | Configurable master or slave - enables flexible system architecture with single-host control and distributed node management. |
| TDM Channel Count | Up to 32 upstream + 32 downstream - supports high-channel-count microphone arrays and speaker zones in premium automotive audio. |
| PDM Inputs | 4 high-dynamic-range PDM inputs - directly interfaces four digital MEMS microphones without external decimation filters. |
| Max Node-to-Node Distance | 15 m per segment - allows physical separation between head unit, amplifier, and door-mounted sensors in vehicle cabin layouts. |
| Cable Interface | Single differential pair - reduces wiring weight/cost vs. traditional multi-wire audio buses and simplifies EMI shielding. |
| Power Delivery | Phantom power support - powers downstream slave nodes over same twisted-pair cable, eliminating need for local power at remote sensors. |
Pinout & Package
AD2425WCCSZ-RL is housed in a 40-lead LFCSP (6 mm × 6 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per Analog Devices AD2425W datasheet Rev. SpB (Nov 2017).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DTX0/DTX1 | Differential transmit output | Drives A2B bus toward slave node; supports 15 m cable drive with embedded clock/data/sync. |
| DRX0/DRX1 | Differential receive input | Receives A2B bus signal from master or upstream node; includes built-in equalization for long-cable integrity. |
| BCLK, SYNC | Audio clock and frame sync outputs | Provides bit clock and frame synchronization to local audio peripherals; phase-aligned across all A2B nodes. |
| SDA, SCL | I²C interface pins | Enable local configuration and status readback; also carry embedded I²C-over-A2B traffic to remote slaves. |
| VREG1, VREG2 | On-chip voltage regulators | Supply 1.8 V and 3.3 V to internal circuitry and external peripherals; reduce need for external LDOs at node. |
| IO7, IRQ/IO0 | General-purpose I/O | Support GPIO extension over A2B bus; usable for interrupt signaling, mute control, or status indication. |
Key Features
| Feature | Design Value |
|---|---|
| Master-mode operation | Enables standalone A2B network initiation without external controller; eliminates dependency on host MCU for bus initialization. |
| Integrated PDM decimation | Converts 4× PDM microphone streams to TDM format internally - removes need for separate DSP or FPGA preprocessing. |
| Dual TRX blocks (A & B) | Allows bidirectional daisy-chain expansion - one port connects toward master, the other toward last slave, simplifying linear topology routing. |
| Embedded I²C-over-A2B | Routes host I²C commands transparently to slave registers - enables centralized diagnostics and real-time parameter tuning across entire bus. |
| Automotive qualification | AEC-Q100 Grade 2 (−40°C to +105°C) - ensures reliability in engine bay and cabin environments with thermal cycling and vibration stress. |
Applications
| Active Noise Cancellation (ANC) | Hands-Free In-Car Communication |
|---|---|
Use Scenario: Real-time suppression of engine, road, and wind noise using error microphones and reference sensors distributed across vehicle cabin. IC Role / Device Role / Timing Role: Master node synchronizing multiple remote PDM microphone inputs and driving speaker outputs with sub-50 µs end-to-end latency. Use Value: Enables deterministic timing alignment across all ANC sensors and actuators via embedded A2B clock distribution, critical for adaptive filter convergence. | Use Scenario: Capturing voice commands and occupant speech from roof, pillar, and seat-integrated microphones while rejecting ambient noise. IC Role / Device Role / Timing Role: Central A2B hub aggregating 4× PDM mic inputs and distributing processed audio to infotainment head unit over TDM. Use Value: Delivers high-SNR voice capture by preserving full 120 dB dynamic range of MEMS mics through direct PDM interface and low-jitter clocking. |
| Multi-Zone Audio Distribution | Rear-Seat Entertainment Systems |
Use Scenario: Delivering independent audio streams to front, rear, and side zones with localized volume, EQ, and delay control. IC Role / Device Role / Timing Role: Slave node receiving 32-channel TDM stream and routing subsets to local DACs or amplifiers with sample-accurate timing. Use Value: Supports zone-specific audio processing without inter-zone jitter accumulation due to A2B's phase-aligned clock recovery. | Use Scenario: Connecting ceiling-mounted displays and wireless headphones to central media controller via lightweight cabling. IC Role / Device Role / Timing Role: Slave transceiver providing phantom-powered I²S output to headphone DACs and HDMI audio extractors. Use Value: Reduces harness weight by >40% compared to discrete audio + power + control wiring, meeting OEM weight targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar A2B transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD2428WCCSZ-RL | Higher channel count (up to 64 TDM channels), adds Ethernet-over-A2B capability, larger 48-lead LFCSP package. | Suitable for next-gen architectures requiring higher bandwidth or IP-based diagnostics; not drop-in compatible due to pin count and footprint change. | Select AD2428WCCSZ-RL when expanding beyond 32-channel audio or integrating Ethernet-enabled diagnostics. |
| AD2420WCCSZ-RL | Slave-only configuration, no master-mode capability, identical 40-lead LFCSP package and PDM/TDM feature set. | Used exclusively as downstream node; requires separate master (e.g., AD2425WCCSZ-RL) in same system. | Choose AD2420WCCSZ-RL for cost-optimized slave positions where master functionality is centralized elsewhere. |
Compared with AD2425WCCSZ-RL, AD2428WCCSZ-RL offers expanded bandwidth and protocol flexibility at the cost of layout redesign, while AD2420WCCSZ-RL provides identical audio interface capability in slave-only form-enabling modular system partitioning without sacrificing PDM or TDM performance.
Availability
AD2425WCCSZ-RL is available at Aetrix Electronics and suitable for automotive active noise cancellation, hands-free voice communication, and multi-zone audio distribution requiring stable component supply across production lifecycles.
Supply support for AD2425WCCSZ-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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision sensing, power management, and connectivity.
The AD242x A2B transceiver product line was designed specifically for deterministic, low-latency, multichannel audio transport in automotive cabins-replacing legacy analog and digital audio interconnects with scalable, lightweight, and EMI-robust networking.
FAQ
Does AD2425WCCSZ-RL support both master and slave operation?
Yes, AD2425WCCSZ-RL is uniquely configurable as either master or slave in an A2B network. As master, it initiates the bus, generates clock and framing, and manages configuration of downstream nodes via embedded I²C-over-A2B. As slave, it synchronizes to upstream timing and forwards audio/control data. This dual-role capability is confirmed in Table 1 of the AD2425W datasheet Rev. SpB.
What is the maximum number of PDM microphones supported by AD2425WCCSZ-RL?
AD2425WCCSZ-RL supports exactly four high-dynamic-range PDM microphone inputs, as specified in the "PDM microphone inputs" row of the Product Comparison Guide (Table 1) and functional block diagram. Each input accepts standard 1-bit PDM streams at up to 3.072 MHz, with on-chip decimation to TDM format.
Can AD2425WCCSZ-RL power downstream slave nodes over the A2B bus?
Yes, AD2425WCCSZ-RL supports phantom power delivery over the same differential pair used for data transmission. When configured as master, it can supply regulated power to downstream slave nodes such as AD2420WCCSZ-RL, eliminating the need for local power sources at remote sensor locations.
Is AD2425WCCSZ-RL qualified for automotive use?
Yes, AD2425WCCSZ-RL is AEC-Q100 Grade 2 qualified (−40°C to +105°C ambient), with full automotive reliability testing including HTOL, temperature cycling, and ESD per JESD22 standards. This qualification is explicitly stated in the General Description section and supported by Analog Devices' automotive product documentation.
What package type and pin count does AD2425WCCSZ-RL use?
AD2425WCCSZ-RL uses a 40-lead LFCSP package measuring 6 mm × 6 mm with 0.5 mm pitch and an exposed thermal pad. This package is shared across the AD2421W/AD2422W/AD2425W family and is verified in the mechanical drawings of the AD2425W datasheet Rev. SpB.
AD2425WCCSZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Audio Transceiver
- Applications:
- Audio
- Number of Channels:
- 32
- Interface:
- I2C, I2S
- Voltage - Supply:
- 3.7V ~ 9V
- Operating Temperature:
- -40°C ~ 105°C
- Specifications:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Grade:
- Automotive
AD2425WCCSZ-RL FAQ
1.How can I place an order for AD2425WCCSZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD2425WCCSZ-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 AD2425WCCSZ-RL reliable?
The price and inventory of AD2425WCCSZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD2425WCCSZ-RL is usually 5 days.
3.What payment methods are accepted for AD2425WCCSZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD2425WCCSZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD2425WCCSZ-RL?
AD2425WCCSZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD2425WCCSZ-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 AD2425WCCSZ-RL?
For technical support, including AD2425WCCSZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD2425WCCSZ-RL requirements.
6.How does Aetrix verify that AD2425WCCSZ-RL is sourced from the original manufacturer or authorized distributors?
All AD2425WCCSZ-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 AD2425WCCSZ-RL meets industry standards.
7.What is the process for return or replacement of AD2425WCCSZ-RL?
All AD2425WCCSZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with AD2425WCCSZ-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 AD2425WCCSZ-RL part is unused and in its original packaging.
Return procedure for AD2425WCCSZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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