Portable Audio

All for Absolute Sound

The VELVET SOUND taken over genealogy of the Premium Audio Technology is realized in various scenes.

The advanced audio devices enable natural sound recording technology used in today's recording studios enabling a PCM recorder, and state-of-the-art Hi-Fi sound playback technology used in professional level audio equipment.

AKM's advanced audio devices optimized for portable equipment such as smartphone lead new era of the high-resolution digital audio.

FEATURED PRODUCTS

AK4332ECB

Low-power HiFi D/A converter for true wireless earphones

AK4332ECB

The AK4332 is an advanced 32-bit high sound quality mono audio DAC with a built-in ground-referenced headphone amplifier. It has four types of 32-bit digital filters for better sound quality, achieving low distortion characteristics and wide dynamic range. The AK4332 accepts PCM Data, PDM Data and DSD Data. It is available in a 30-pin CSP package, utilizing less board space than competitive offerings. It is ideal for true wireless earphones, (TWS: True Wireless Stereo).

High Performance of -101dB THD+N with only 2.8mW Power Consumption

Capable of Achieving Even Lower Power Consumption with support of a 1-bit PDM signal

Key Features

  • Maximum Sampling Frequency/Resolution :  192kHz/32-bit
  • S/N (SNR) :  109dB
  • Distortion (THD+N) :  -101dB
  • Sound Color Digital Filter :  4 types
  • Power consumptoin :  2.8mW (fs=48kHz)

PRODUCT CATEGORY

HiFi Headphone DAC

LINEUP

HiFi Headphone DACs

Part Number Document Ch# Resolution S/N THD
+N *
max
Fs *
DSD * 
Input
Sound
Color *
Power
Consumption
Vdd Analog
Output
HDP
Amp
Package Operation
Temp.
Others
      bit dB dB kHz MHz   mW V        
AK4331ECB Datasheet 2 32 109 -100 192 No 4 types 4.4 1.7 to 1.9 Single Yes 36CSP -40 to 85 SRC
AK4332ECB Datasheet 1 32 109 -101 192 Yes 4 types 2.8 1.7 to 1.9 Single Yes 30CSP -40 to 85  
AK4377AECB Datasheet 2 32 125 -107 384 No 4 types 37.1/13.75 1.7 to 1.9 Single Yes 36CSP -40 to 85  
AK4377ECB   2 32 128 -109 768 11.2 4 types 59.7/20.7 1.7 to 1.9 Single Yes 36CSP -40 to 85  

[Notes]

* THD+N: Total Harmonic Distortion plus Noise
* max Fs: Maximum Sampling Frequency
* DSD: Direct Stream Digital
* Sound Color: AKM original digital filter

* Schedules of Samples and Production are subject to be changed without notice.

* The information in the datasheet is subject to be changed without notice.

D/A Converters (DAC)

LINEUP

D/A Converters for Premum Portable Audio

Part Number Document Ch# Resolution S/N THD
+N *
max
Fs *
DSD * 
Input
Sound
Color
Power
Consumption
Vdd Package
      bit dB dB kHz MHz   mW V  
AK4492ECB Datasheet 2 32 127 -115 768 11.2 6 types 155 5.0/3.3 or 1.8 96CSP
AK4490EN Datasheet 2 32 120 (123 *) -112 768 11.2 5 types 100 5.0 48QFN

[Notes]

* S/N (Mono mode)
* THD+N: Total Harmonic Distortion plus Noise
* max Fs: Maximum Sampling Frequency
* DSD: Direct Stream Digital
* Sound Color: AKM original digital filter

* Schedules of Samples and Production are subject to be changed without notice.
* The information in the datasheet is subject to be changed without notice.

DSP CODEC

LINEUP

Advanced Audio DSP CODEC

Part Number Document Ch#
AD/DA
Resolution S/N
AD/DA
THD+N * 
DAC
max
Fs *
Sound
Color *
Power
Consumption
Vdd Ch#
DSP  In/Out
Ch#
SRC
Clock
Speed(max)
Data
RAM
Package Operation
Temp.
    Ch bit dB dB kHz   mW V     MHz word  
AK4962ECB Product Brief 4/4 32 102/125 -106 384 4 types   1.7 to 1.9 10/10 8 122.88 22528 125CSP -40 to 85

[Notes]

* THD+N: Total Harmonic Distortion plus Noise
* max Fs: Maximum Sampling Frequency
* Sound Color: AKM original digital filter

* Schedules of Samples and Production are subject to be changed without notice.* The information in the datasheet is subject to be changed without notice.

CODEC

LINEUP

CODEC

Part Number Document Ch#
AD/DA
Resolution S/N
AD/DA
THD+N * 
AD/DA
max
Fs *
Sound
Color *
Power
Consumption
Vdd Ch#
SRC
Audio
HUB
DIT SLIM
Bus
Package Operation
Temp.
Others
    Ch bit dB dB kHz   mW V            
AK4558EN Datasheet 2/2 32 108/108 -92/-100 216 4 types 50mW 2.4 to 3.6         28QFN -40 to +105 PLL

[Notes] 
* THD+N: Total Harmonic Distortion plus Noise
* max Fs: Maximum Sampling Frequency
* DSD: Direct Stream Digital
* Sound Color: AKM original digital filter

* Schedules of Samples and Production are subject to be changed without notice.* The information in the datasheet is subject to be changed without notice.