Automotive Audio Bus®

Analog Devices Automotive Audio Bus (A2B®) technology provides critical support to the vehicle infotainment systems of tomorrow. Our A2B products deliver high fidelity audio while increasing fuel efficiency, thanks to upward of 75% less cabling weight. The A2B portfolio helps enables multiple applications such as voice recognition and active noise cancellation. A2B is a single-master, multiple-slave system where the transceiver chip at the host controller is the master.

Applications:

• Audio ECU connectivity
• Hands-free microphone arrays
• In-car communications
• Active noise cancellation
Product Selection Table

Automotive Audio Bus®

  Hold Shift Key for secondary sorting
SortOrderPart#Master/ SlaveNode CapabilityInterface FeaturesInterface ProtocolData Rate
(max)
(bps)
Number of NodesESD Protection
(V)
Vs+
(min)
(V)
Vs+
(max)
(V)
Price (1000+)
($ US)
1AD2429 Master Master only I2C Control and Status Bus, I2S Data A2B, I2C, I2S, PDM 50M 3 2.5k 3.7 9 $2.88 (AD2429KCPZ)
2AD2428 Master, Slave Mid and Last in Line Capable I2C Control and Status Bus, I2S Data A2B, I2C, I2S, PDM 50M 11 2.5k 3.7 9 $3.93 (AD2428KCPZ)
3AD2420W Slave Last in Line only I2C Control and Status Bus, I2S Data A2B, I2C, PDM 50M 3 2.5k 3.7 9 $2.10 (AD2420WCCPZ01)
4AD2429W Master Master only I2C Control and Status Bus, I2S Data A2B, I2C, I2S, PDM 50M 3 2.5k 3.7 9 $3.26 (AD2429WCCPZ01)
5AD2420 Slave Last in Line only I2C Control and Status Bus, I2S Data A2B, I2C, PDM 50M 3 2.5k 3.7 9 $1.85 (AD2420KCPZ)
6AD2426 Slave Last in Line only I2C Control and Status Bus, I2S Data A2B, I2C, PDM 50M 11 2.5k 3.7 9 $2.72 (AD2426KCPZ)
7AD2428W Master, Slave Mid and Last in Line Capable I2C Control and Status Bus, I2S Data A2B, I2C, I2S, PDM 50M 11 2.5k 3.7 9 $4.06 (AD2428WCCSZ01)
8AD2427W Slave Mid Line Capable I2C Control and Status Bus, I2S Data A2B, I2C, PDM 50M 11 2.5k 3.7 9 $3.36 (AD2427WCCSZ)
9AD2426W Slave Last in Line only I2C Control and Status Bus, I2S Data A2B, I2C, PDM 50M 11 2.5k 3.7 9 $3.09 (AD2426WCCSZ)
10AD2427 Slave Mid Line Capable I2C Control and Status Bus, I2S Data A2B, I2C, PDM 50M 11 2.5k 3.7 9 $2.97 (AD2427KCPZ)
11AD2425W Master, Slave Mid-Point Capable I2C Control and Status Bus, I2S Data A2B 50 11 2.5k 3.7 9-
12AD2422W Slave Mid-Point Capable I2C Control and Status Bus, I2S Data A2B 50 2 2.5k 3.7 9-
13AD2421W Slave End-Point Only I2C Control and Status Bus, I2S Data A2B 50 1 2.5k 3.7 9-
14AD2403 Master, Slave Mid-Point Capable I2C Control and Status Bus, I2S Data A2B 50 9 2.5k 3.7 9-