Data Sheet



AD2426W/AD2427W/AD2428W

Rev. Sp0

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Line topology

Single master, multiple slave

Up to 15 m between nodes and up to 40 m overall cable

length

Communication over distance

Synchronous data

Multichannel I

Clock synchronous, phase aligned in all nodes

Low latency slave to slave communication

Control and status information I

GPIO over distance

Bus power or local power slave nodes

Configurable with SigmaStudio graphical software tool

Qualified for automotive applications

Configurable as A

I

8-bit to 32-bit multichannel I

I

Up to 32 upstream and 32 downstream channels

PDM inputs for 4 high dynamic range microphones on mas-

ters or slaves

Support for receiving I

microphones

Unique ID register for each transceiver

Support for crossover or straight-through cabling

Programmable settings to optimize EMC performance

APPLICATIONS

Automotive audio communication link

Active noise cancellation

Microphone arrays for hands free and in car communication

Figure 1. Functional Block Diagram

A2B

TRX B

(Towards

Master)

VREG1

I2C

PLL

BCLK/PDMCLK

DTX0/DTX1

IRQ/IO0

DRX0/DRX1

SYNC

SDA

SCL

ADR1/IO1/CLKOUT1

IOVDD

A2B

TRX A

(Towards

Last Slave)

BCM

AP

ACM

BN

DVDD

ATRXVDD/BTRXVDD

PLLVDD

VSS

SWP

VIN

VOUT1

ADR2/IO2/CLKOUT2

VREG2

VOUT2

VSSN

AN

BP

SENSE

DIAGNOSTICS

®

I2S/TDM

PDM

IO7