AD2429
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AD2429

A2B Main 4xPDM XCVR w I2S/TDM

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Part Details
Part Models 2
1ku List Price
price unavailable
Features
A2B BUS FEATURES
  • Line topology
    • Single main node, multiple subordinate nodes
    • Up to 15 m between nodes and up to 40 m overall cable length
  • Communication over distance
    • Synchronous data
      • Multichannel I2S/TDM to I2S/TDM
      • Synchronous clock, phase aligned in all nodes
      • Low latency node to node communication
    • Control and status information I2C to I2C
    • GPIO and interrupt
  • Bus power or local power subordinate nodes
  • Configurable with SigmaStudio/SigmaStudio+ graphical software tool
  • AEC-Q100 qualified for automotive applications
A2B TRANSCEIVER FEATURES
  • Configurable A2B bus main node or subordinate node
  • Programmable via I2C interface
  • 8-bit to 32-bit multichannel I2S/TDM interface
    • Programmable I2S/TDM data rate
    • Up to 32 upstream and 32 downstream channels
  • PDM interface
    • Programmable PDM clock rate
    • Up to 4 high dynamic range microphone inputs
  • Simultaneous reception of I2S data with up to 4 PDM microphones
  • Unique ID register for each transceiver
  • Crossover or straight-through cabling
  • Programmable settings to optimize EMC performance
Additional Details
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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 differential wire pair. 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 (TDM) channel content.

A2B is a single main node, multiple subordinate node system where the transceiver at the host controller is the main node. The main node generates clock, synchronization, and framing for all subordinate nodes. The main A2B transceiver is programmable over a control port (I2C) for configuration and read back. An extension of the control port protocol is embedded in the A2B data stream, which allows direct access of registers and status information on subordinate transceivers, as well as I2C to I2C communication over distance.

The transceiver can connect directly to general-purpose digital signal processors (DSPs), 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.

Finally, 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.

Table 1. Product Comparison Guide
Feature AD2420 AD2426 AD2427 AD2428 AD2429
Main node capable No No No Yes Yes
Number of subordinate nodes discoverable1 N/A N/A N/A Up to 10 Up to 2
Functional TRX blocks A only A only A + B A + B B only
I2S/TDM support No No No Yes Yes
PDM microphone inputs 2 mics2 4 mics 4 mics 4 mics 4 mics
Max node to node cable length 5 m 15 m 15 m 15 m 5 m

1 N/A means not applicable.
2 PDM microphones must be connected to the DRX0/IO5 pin.

Applications

  • Audio communication link
  • Microphone arrays
    • Beamforming
    • Hands free and in car communication
  • Active and road noise cancellation
  • Audio/video conferencing systems

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.

Part Models 2
1ku List Price
price unavailable

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Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD2429BCPZ
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Product Lifecycle

PCN

Jul 5, 2022

- 21_0271

Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages

Nov 16, 2022

- 22_0092

Obsolescence of AD2420/W & AD2429/W products

Filter by Model

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Part Models

Product Lifecycle

PCN

Jul 5, 2022

- 21_0271

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Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages

Nov 16, 2022

- 22_0092

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Obsolescence of AD2420/W & AD2429/W products

Software and Part Ecosystem

Software and Part Ecosystem

Evaluation Kit

Evaluation Kits 6

reference details image

ADZS-AUDIOA2BAMP

A2B® Class-D Amplifier Module

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ADZS-AUDIOA2BAMP

A2B® Class-D Amplifier Module

A2B® Class-D Amplifier Module

Features and Benefits

  • Two SSM3582 high-efficiency Class-D amplifiers
    • Inputs: 4 mono (or 2 stereo) channels, sourced by
      • the SHARC® Audio Module (or another A2B source) connected via A2B
      • a TDM I2S source connected to 12-pin header
    • Outputs: 4 amplified speaker channels at 15W each or 2 "bridged" amplified channels at 50W each. Each SSM3582 can provide:
      • 2× 14.67 W output at 12 V supply to 4 Ω loads at <1% THD + N, or
      • 1× 49.69 W output at 16 V supply to 2 Ω loads at <1% THD + N
    • Class-D amp bridged mode can be used to support 2.1 audio configurations
  • AD2428W low-latency A2B audio bus transceiver
    • Connects to SHARC Audio Module (or another A2B source) via twisted-wire-pair cable (included)
    • Two pushbuttons routed to I/O pins (can be sensed by any system A2B node)
    • Two GPIO pins routed to LEDs (can be driven by any system A2B node)
  • Can be cascaded via A2B to provide 8 amplified output channels to support 7.1 and other speaker configurations
  • Further expansion possible using additional modules connected via A2B or fins connected directly to the SHARC Audio Module expansion port 
  • Fully integrated A2B software and drivers in the SHARC Audio Module Bare Metal Audio Framework and the SigmaStudio® A2B Software package

Product Detail

The A2B Class-D Amplifier Module leverages ADI's low-latency A2B audio bus technology, featuring an AD2428W A2B transceiver (serving as an A2B subordinate) that accepts audio over the A2B bus from a connected A2B node in the system. The ADZS-AUDIOA2BAMP Module drives the received A2B data to a pair of high-efficiency, digital input, stereo SSM3582 class-D audio amplifiers. Audio is transmitted digitally to the amplifier, minimizing the possibility of signal corruption in digital environments. See the SSM3582 data sheet for more information.

As the A2B Class-D Amplifier Module is an A2B subordinate node, it must be incorporated into an A2B system with a main node, such as the SHARC® Audio Module or the A2B main evaluation board. Connect the A2B Class-D Amplifier Module to the system using the included A2B twisted-wire-pair cable.

reference details image

EVAL-AD2428WG1BZ

Local-Power A2B® Subordinate Node (I2S/TDM, No PDM Mics)

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EVAL-AD2428WG1BZ

Local-Power A2B® Subordinate Node (I2S/TDM, No PDM Mics)

Local-Power A2B® Subordinate Node (I2S/TDM, No PDM Mics)

Features and Benefits

  • AD2428W Automotive Audio Bus A2B® Transceiver
    • A2B subordinate operation
    • Multichannel I2S/TDM interface
    • Locally powered
      • LT3505 - 1.2 A, Step-Down Switching Regulator
      • LT1965 - 1.1 A, Low Noise, Low Dropout Linear Regulator
  • ADAU1761 SigmaDSP® Stereo, Low Power, 96 kHz, 24-Bit Audio Codec with Integrated PLL
  • EEPROM
  • Power, Status, GPIO, and Interrupt LEDs
  • Pushbutton Interrupt Generation

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.

Product Detail

An Automotive Audio Bus (A2B®) system consists of a single main node and at least one subordinate node, where the transceiver at the host controller is the main node. The main transceiver generates clock, synchronization, and framing for all subordinate nodes and is programmable over a control bus (I2C) for configuration and readback. An extension of this control bus is embedded in the A2B data stream, which enables the host to directly access subordinate transceiver registers and any I2C-connected peripherals on subordinate nodes. Transceivers can connect directly to PDM microphones and to numerous peripherals via I2C and a multichannel I2S/TDM interface. Finally, 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, thus eliminating the need for a power supply on bus-powered subordinate nodes. Due to the numerous configurations that are possible for a given A2B system, there are several evaluation platforms that can be used in combination to verify system operation, as summarized in the table below.

Product Comparison Guide
A2B Evaluation Board Main/Subordinate Power
Supply
I2S/TDM PDM Mics
EVAL-AD2428WD1BZ Main/Subordinate Local Yes 3
EVAL-AD2428WB1BZ Subordinate Bus Yes 2
EVAL-AD2428WC1BZ Subordinate Bus No 4
EVAL-AD2428WG1BZ Subordinate Local Yes 0
 ADZS-AD2428MINI Main/Subordinate Local/Bus Yes   0

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.

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EVAL-AD2428WD1BZ

A2B® Main or Local-Power Subordinate Node (I2S/TDM, 3 PDM Mics)

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EVAL-AD2428WD1BZ

A2B® Main or Local-Power Subordinate Node (I2S/TDM, 3 PDM Mics)

A2B® Main or Local-Power Subordinate Node (I2S/TDM, 3 PDM Mics)

Features and Benefits

  • AD2428W Automotive Audio Bus A2B® Transceiver
    • Programmable as A2B main or subordinate
    • Multichannel I2S/TDM interface
    • Three PDM microphone inputs
    • Locally powered
      • LT8609 – 2A/3A Peak Synchronous Step-Down Regulator with 2.5μA Quiescent Current
      • LTC4040 – 2.5A Battery Backup Power Manager
      • LTC3621 – 1A Synchronous Step-Down Regulator
      • LTC3121 – 1.5A Synchronous Step-Up DC/DC Converter
    • Configurable with SigmaStudio graphical software tool
  • ADAU1452 SigmaDSP® Digital Audio Processor
  • ADAU1761 SigmaDSP Stereo, Low Power, 96kHz, 24-Bit Audio Codec with Integrated PLL
  • Reset, Status, and Interrupt LEDs
  • Jumper Controls
    • Power, clock, and synchronization signal source
    • Data routing

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.




Product Detail

An Automotive Audio Bus (A2B®) system consists of a single main node and at least one subordinate node, where the transceiver at the host controller is the main node. The main transceiver generates clock, synchronization, and framing for all subordinate nodes and is programmable over a control bus (I2C) for configuration and readback. An extension of this control bus is embedded in the A2B data stream, which enables the host to directly access subordinate transceiver registers and any I2C-connected peripherals on subordinate nodes. Transceivers can connect directly to PDM microphones and to numerous peripherals via I2C and a multichannel I2S/TDM interface. Finally, 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, thus eliminating the need for a power supply on bus-powered subordinate nodes. Due to the numerous configurations that are possible for a given A2B system, there are several evaluation platforms that can be used in combination to verify system operation, as summarized in the table below.

Product Comparison Guide
A2B Evaluation Board Main/Subordinate Power
Supply
I2S/TDM PDM Mics
EVAL-AD2428WD1BZ Main/Subordinate Local Yes 3
EVAL-AD2428WB1BZ Subordinate Bus Yes 2
EVAL-AD2428WC1BZ Subordinate Bus No 4
EVAL-AD2428WG1BZ Subordinate Local Yes 0
 ADZS-AD2428MINI Main/Subordinate Local/Bus Yes   0

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.


reference details image

EVAL-AD2428WB1BZ

Bus-Powered A2B® Subordinate Node (I2S/TDM, 2 PDM Mics)

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EVAL-AD2428WB1BZ

Bus-Powered A2B® Subordinate Node (I2S/TDM, 2 PDM Mics)

Bus-Powered A2B® Subordinate Node (I2S/TDM, 2 PDM Mics)

Features and Benefits

  • AD2428W Automotive Audio Bus A2B® Transceiver
    • A2B subordinate operation
    • Multichannel I2S/TDM interface
    • Two PDM microphone inputs
    • Powered over A2B bus
  • ADAU1761 SigmaDSP® Stereo, Low Power, 96 kHz, 24-Bit Audio Codec with Integrated PLL
  • Status and Interrupt LEDs
  • Pushbutton Interrupt Generation

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.

Product Detail

An Automotive Audio Bus (A2B®) system consists of a single main node and at least one subordinate node, where the transceiver at the host controller is the main node. The main transceiver generates clock, synchronization, and framing for all subordinate nodes and is programmable over a control bus (I2C) for configuration and readback. An extension of this control bus is embedded in the A2B data stream, which enables the host to directly access subordinate transceiver registers and any I2C-connected peripherals on subordinate nodes. Transceivers can connect directly to PDM microphones and to numerous peripherals via I2C and a multichannel I2S/TDM interface. Finally, 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, thus eliminating the need for a power supply on bus-powered subordinate nodes. Due to the numerous configurations that are possible for a given A2B system, there are several evaluation platforms that can be used in combination to verify system operation, as summarized in the table below.

Product Comparison Guide
A2B Evaluation Board Main/Subordinate Power
Supply
I2S/TDM PDM Mics
EVAL-AD2428WD1BZ Main/Subordinate Local Yes 3
EVAL-AD2428WB1BZ Subordinate Bus Yes 2
EVAL-AD2428WC1BZ Subordinate Bus No 4
EVAL-AD2428WG1BZ Subordinate Local Yes 0
 ADZS-AD2428MINI  Main/Subordinate Local/Bus  Yes   0

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.


reference details image

EVAL-AD2428WC1BZ

Bus-Powered A2B® Subordinate Node (No I2S/TDM, 4 PDM Mics)

zoom

EVAL-AD2428WC1BZ

Bus-Powered A2B® Subordinate Node (No I2S/TDM, 4 PDM Mics)

Bus-Powered A2B® Subordinate Node (No I2S/TDM, 4 PDM Mics)

Features and Benefits

  • AD2428W Automotive Audio Bus A2B® Transceiver
    • A2B subordinate operation
    • Powered over A2B bus
  • Four PDM microphone inputs (INMP621)
  • GPIO LED

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.

Product Detail

An Automotive Audio Bus (A2B®) system consists of a single main node and at least one subordinate node, where the transceiver at the host controller is the main node. The main transceiver generates clock, synchronization, and framing for all subordinate nodes and is programmable over a control bus (I2C) for configuration and readback. An extension of this control bus is embedded in the A2B data stream, which enables the host to directly access subordinate transceiver registers and any I2C-connected peripherals on subordinate nodes. Transceivers can connect directly to PDM microphones and to numerous peripherals via I2C and a multichannel I2S/TDM interface. Finally, 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, thus eliminating the need for a power supply on bus-powered subordinate nodes. Due to the numerous configurations that are possible for a given A2B system, there are several evaluation platforms that can be used in combination to verify system operation, as summarized in the table below.

Product Comparison Guide
A2B Evaluation Board Main/Subordinate Power
Supply
I2S/TDM PDM Mics
EVAL-AD2428WD1BZ Main/Subordinate Local Yes 3
EVAL-AD2428WB1BZ Subordinate Bus Yes 2
EVAL-AD2428WC1BZ Subordinate Bus No 4
EVAL-AD2428WG1BZ Subordinate Local Yes 0
 ADZS-AD2428MINI Main/Subordinate Local/Bus  Yes   0

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.


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ADZS-AD2428MINI

AD2428 MINI Break-Out Board (32-Pin & 100-Pin Connectors)

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ADZS-AD2428MINI

AD2428 MINI Break-Out Board (32-Pin & 100-Pin Connectors)

AD2428 MINI Break-Out Board (32-Pin & 100-Pin Connectors)

Features and Benefits

  • AD2428W Automotive Audio Bus A2B® Transceiver
    • Multichannel I2S/TDM interface
  • Main or Subordinate Node (Local Power & Bus Power)
  • 100 pin connector for interfacing with EV-SOMCRR-EZKIT
  • “Break out board” for A2B
    • 32 pin 0.1" header for customers to interface their own designs
  • EEPROM
  • LT8620 – 2A, Step-Down Switching Regulator
  • Power, Status, GPIO, and Interrupt LEDs

Product Detail

ADZS-AD2428MINI is a low-cost, mini break-out board which can interface with EV-SOMCRR-EZKIT (via a 100-pin connector) or any custom board (via a 32 pin 0.1" header). It supports main and subordinate node capability as well as bus and local power configurations.

An Automotive Audio Bus (A2B®) system consists of a single main node and at least one subordinate node, where the transceiver at the host controller is the main node. The main transceiver generates clock, synchronization, and framing for all subordinate nodes and is programmable over a control bus (I2C) for configuration and readback. An extension of this control bus is embedded in the A2B data stream, which enables the host to directly access subordinate transceiver registers and any I2C-connected peripherals on subordinate nodes.

Transceivers can connect directly to PDM microphones and to numerous peripherals via I2C and a multichannel I2S/TDM interface. Finally, 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, thus eliminating the need for a power supply on bus-powered subordinate nodes. Due to the numerous configurations that are possible for a given A2B system, there are several evaluation platforms that can be used in combination to verify system operation, as summarized in the table below.

Product Comparison Guide
A2B Evaluation Board Main/Subordinate Power
Supply
I2S/TDM PDM Mics
EVAL-AD2428WD1BZ Main/Subordinate Local Yes 3
EVAL-AD2428WB1BZ Subordinate Bus Yes 2
EVAL-AD2428WC1BZ Subordinate Bus No 4
EVAL-AD2428WG1BZ Subordinate Local Yes 0
 ADZS-AD2428MINI  Main/Subordinate Local/Bus  Yes   0

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.

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