AD2430
RECOMMENDED FOR NEW DESIGNSAutomotive Audio Bus (A2B) Transceiver
- Part Models
- 2
- 1ku List Price
- price unavailable
Overview
A2B BUS FEATURES
- Line topology
- Single main node, up to 16 subordinate nodes
- Up to 15 m between nodes and up to 80 m overall cable length
- Communication over distance
- Synchronous data
- Multichannel I2S/TDM to I2S/TDM
- Clock synchronous, phase-aligned in all nodes
- Low latency subordinate-to-subordinate communication
- Control and status information I2C to I2C
- GPIO over distance
- Synchronous data
- Bus power or local power subordinate nodes
- Configurable with SigmaStudio+ graphical software tool
- AEC-Q100 qualified for automotive applications
BASELINE A2B TRANSCEIVER FEATURES
- Configurable as A2B main or last subordinate nodes
- Programmable via I2C interface
- 8-bit to 32-bit multichannel I2S/TDM interface
- I2S/TDM/PDM programmable data rate
- I2C mailbox
- PDM inputs for 4 high dynamic range microphones on main or subordinate nodes
- Support for receiving I2S/TDM data on nodes with up to 4 PDM microphones
- Unique ID register for each transceiver
- Support for crossover or straight-through cabling
- Programmable settings to optimize EMC performance
AD2430/AD2438 TRANSCEIVER ENHANCEMENTS
- Cable diagnostics with integrated line power switches
- Supports 3.3 V input at VIN in low voltage input (LVI) mode for local powered subordinate node
- Dedicated hardware reset pin
- I2S/TDM crossbar switch
- Flexible mapping of Tx/Rx TDM channel data to A2B slots
- Support for I2C fast mode plus (1 MHz)
- Support for in-cabin LED control using 4 PWM outputs
- 8 GPIO pins with configurable pin mapping
The Automotive Audio Bus (A2B®) provides a multichannel, I2S/TDM link over distances of up to 15 m between nodes. It embeds bidirectional synchronous pulse-code modulation (PCM) data (for example, digital audio), clock, and synchronization signals onto a single unshielded twisted pair (UTP) differential cable. A2B supports a direct point to point connection and allows multiple, daisy-chained nodes at different locations to contribute and/or consume time division multiplexed channel content.
A2B is a single-main, multiple-subordinate node system where the transceiver at the host controller is the main transceiver. The main node generates clock, synchronization, and framing for all subordinate nodes. The main A2B transceiver chip is programmable over a control bus (I2C) for configuration and read back. An extension of this control bus is embedded in the A2B data stream, which grants direct access to registers and status information on subordinate node transceivers, as well as I2C to I2C communication from the host to a peripheral in a subordinate node.
The transceiver can connect directly to general-purpose digital signal processors (DSPs) or microprocessors, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), microphones, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and codecs through a multichannel I2S/TDM interface. It also provides a pulse density modulation (PDM) interface for direct connection of up to four PDM digital microphones. The transceiver’s pulse width modulated (PWM) outputs can control LED drivers or voltage regulators. GPIO status and control is directly conveyed between nodes.
Additionally, the transceiver also supports an A2B bus powering feature, where the main node supplies voltage and current to the subordinate nodes over the same daisy-chained, twisted pair wire cable as used for the communication link.
AUTOMOTIVE APPLICATIONS
- Hands free/speech recognition
- Microphone arrays
- In-car telematics and emergency call systems
- Overhead consoles
- In-car communications
Documentation
Data Sheet 1
Request an NDA
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD2430WCCPZY | 32-Lead LFCSP (5mm x 5mm x 0.75mm w/ EP) | ||
| AD2430WCCPZY-RL | 32-Lead LFCSP (5mm x 5mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 20, 2026 - 24_0206 Qualification of Alternate Wafer Fab for TSMC 0.18um 40V BCDMOS Process |
||
| AD2430WCCPZY | PRODUCTION | |
| AD2430WCCPZY-RL | PRODUCTION | |
|
Jan 7, 2025 - 24_0279 Addition of UTAC Thailand (UT4) as an Alternate Final Test Site for AD243X Device |
||
| AD2430WCCPZY | PRODUCTION | |
| AD2430WCCPZY-RL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
A2B® Software
A2B network design tool and embedded software stack that allows audio network designers to graphically design an A2B network and deploy it into an embedded platform.
View DetailsSigmaStudio®+
SigmaStudio+ is a graphical programming tool that enables audio engineers to program ADI DSPs, download and tune complex audio schematics real-time, and configure A2B® transceivers to realize real-world audio networks
View Details