Data Sheet

Features and Benets
High bandwidth
(
50 Mbps
)
digital bus
Support for up to 32 upstream and
downstream channels
Data, control, clock, plus power on a single wire pair
System cost reduction using low cost, UTP cable
Single master, multiple slave, line topology
Daisy-chaining supported with
zero processor overhead
Bus power capability
Eliminates the need for local power supplies
Embedded diagnostics
Easy system-level fault detection and correction
Fully configurable via SigmaStudio
®
graphical
design environment
Fast time to market
Synchronous delivery of data with predictable
low latency
Two sample bus latency
(
<50 μs
)
for all nodes
Product Comparison Guide
Feature AD2420
(
W
)
AD2426
(
W
)
1
AD2427
(
W
)
1
AD2428
(
W
)
1
AD2429
(
W
)
Master capable No No No Yes Yes
Functional TRx blocks A only A only A and B A and B B only
I²S/TDM support No No No Yes Yes
PDM microphone inputs 2 mics 4 mics 4 mics 4 mics 4 mics
Maximum node-to-node
cable length
5 m 15 m 15 m 15 m 5 m
1
All products are RoHS-compliant. W = qualified for automotive applications.
Evaluation Board Ordering Guide
Model Description
EVAL-AD2428WB1BZ
Bus-powered slave evaluation board; stereo in,
stereo out, and stereo microphones
EVAL-AD2428WC1BZ Bus-powered slave evaluation board with four microphones
EVAL-AD2428WD1BZ
Master or local power slave evaluation board with SigmaDSP
®
ADAU1452;
stereo in, stereo out, and three microphones
EVAL-AD2428WG1BZ Local power slave evaluation board; stereo in, stereo out
SigmaStudio Graphical
Design Environment
►
Visual bus setup and stream-based
network design
►
Intuitive graphical user interface to
config ure the bus
►
Export/import of streams, nodes,
and bus configuration
►
Extensive debug and tracing support
►
Bus bandwidth utilization calculation
►
Bit error rate test
(
BERT
)
►
Line diagnostics
►
Firmware driver generation
Multifunction Evaluation
Systems
►
Proof of concept
►
Test and verification
►
Debug, EMC testing
To learn more about the breakthrough
Automotive Audio Bus technology, visit
analog.com/a2b.
VISIT ANALOG.COM
For regional headquarters, sales, and distributors or
to contact customer service and technical support,
visit analog.com/contact.
Ask our ADI technology experts tough questions, browse
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Support Community. Visit ez.analog.com.
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