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Introduction of SONY Audio Codec IC 2019-12-12
The availability of wireless headphones has increased the need to incorporate high-resolution signal processing and noise reduction into the audio signal processing inside headphones.  In order to meet this need, SONY has developed the Audio Codec IC, which combines excellent noise cancellation and high-resolution signal processing capabilities.
 
SONY's active noise cancellation (ANC) adopts digital technology to achieve high quality, high performance and low power consumption.  The flexible ANC design and adaptation and powerful suppression of environmental noises can realize the design of miniaturization.
 
・SONY ANC Advantages
・High-quality audio
・Miniaturization design
・Overall system integration
・Easy adjustment of noise cancellation
・Long battery life ・SONY ANC Capabilities
・Full digital noise reduction
・Peak noise cancellation of 40dB
・Noise cancellation range from 20Hz to 1kHz
・Low power consumption ・Low noise
・WLCSP packaging 
 
 

・Automatic selection of ANC modes
Smart noise reduction function can automatically select the best ANC configuration according to the user's environment.

・ Automatically adapts the user's wearing style to fine-tune ANC performance.
The smart analysis can detect the user's wearing style, for example, if the user wears glasses or earmuffs to cover hair or wears the headphones on the wrong sides, and then fine-tune the ANC performance based on the use conditions.

 




SONY ANC Product List

Product Name

Description

ANC
Technology

ADC
Channels

DAC
Channels

Analog
Inputs

Analog
Outputs

Input
SNR

Output
SNR

Power

Package
(mm)

CXD3774

Low power active noise
cancelling solution for stereo
headsets

Feedforward,
Feedback

4

2

5

6(SE)

90dB 

90dB

13mW

WLCSP72
(4.0x3.6)

CXD3775

Low power active noise
cancelling solution for stereo
headsets

Feedforward,
Feedback,
Hybrid 

6

2

6

2(SE)

96dB 

90dB

18mW

WLCSP84
(5.3x5.3)

CXD3782

Ultra low power active noise
cancelling solution for stereo
headsets

Feedforward,
Feedback,
Hybrid 

6

2

6

2(BTL)

99dB 

102dB

13mW

WLCSP
(4.63x4.36)

CXD3781

Ultra low power active noise
cancelling solution for true wireless
stereo headphones

Feedforward,
Feedback,
Hybrid 

2

1

2

1(BTL)

95dB 

100dB

7mW

WLCSP
(3.4x3.4)


Please refer to SONY's official website for the above information.:https://www.sony-semicon.co.jp/e/products/lsi/audio/

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