News Release

- New Product Information -

2017/01/06
CES 2017: AKM releases Premium Portable Audio Solution

AKM releases AK4492 Premium D/A Converter, AK4205 Ultra-low Distortion Headphone Amp, and AK1110 Low Noise LDO

Product Name
AK4492ECB
Product Category: Premium Portable Audio
Title
32-bit Stereo
Premium D/A Converter
DR,SN: 127dB, THD+N: -115dB
Applications
Portable Audio Equipment (Smart Phones, Tablets, Portable Music Players and etc.)
AK4492ECB
AK4492ECB
High-end Premium D/A Converter
Product Name
AK4205EN
Product Category: Premium Portable Audio
Title
Ultra-low Noise/Distortion
Stereo Headphone Amplifier
DR,SN: 124dB, THD+N: -118dB
Applications
Portable Audio Equipment (Smart Phones, Tablets, Portable Music Players and etc.)
AK4205EN
AK4205EN
Premium Headphone Amplifier
Product Name
AK1110AEU
Product Category: Premium Portable Audio
Title
2ch Output Low Noise High PSRR
Audio LDO Regulator
Output Noise 2μVRMS / 1μVRMS (f=10Hz ~ 100kHz)
Applications
Portable Audio Equipment (Smart Phones, Tablets, Portable Music Players and etc)
AK1110AEU
AK1110AEU
Premium LDO

Description

In recent years, many companies have expanded the line-up of high-end portable audio, smart phones, tablets and portable music players and etc, responding the growing availability of high-resolution sound sources.  Asahi Kasei Microdevices Corporation, (AKM), launched three products, high-end premium D/A converter AK4492, Headphone Amp AK4205 and Regulator AK1110, with VELVET SOUND technology VELVET SOUND for Premium Portable Audio Solution.

It is also able to see the detail of this solution and products in CES 2017.


 CES 2017 Feature 
- Special Contents -

Providing the most suitable system for portable audio
“AKM Premium Portable Audio Solution”

VELVET SOUND Premium Audio Devices Audio 2 Go

The AK4492 is a premium D/A convertor (DAC), which inherits high quality sound technologies of the AK4490 that has been adopted by many high-end models of portable audio since release in 2016.  It achieves the industry’s leading lowest distortion characteristics.  It also consumes very low power, making it suitable for portable applications pursuing high quality sound.

In addition, as a solution to extract the maximum performance of the DAC, AKM provides an ultra-low noise/distortion headphone amplifier, the AK4205, and a low noise audio LDO, the AK1110 with the AK4492.
AKM has also been providing AK8157A, the clock generator for DAC of low phase noise MCLK/BICK/LRCK for Premium Audio.

AKM provides these premium portable audio solution and products as one-stop, and contributes to improving sound quality of portable audio equipment.

AK4492ECB+AK4205EN+AK1110AEU
Block
AKM Premium Portable Audio Solution
AK4492+AK4205+AK1110
Evaluation Board
AKM Premium Portable Audio Solution

Premium 32-bit D/A Converter "AK4492"
enables reproduction of original acoustic sound in portable audio

AK4492ECB
AK4492ECB
High-end Premium D/A Converter

The AK4492ECB accomplishes low distortion and low power consumption at the industry’s highest level with AKM’s VELVET SOUND technology and original process dedicated to audio products.  A 96-pin WLCSP is used for the AK4492, downsizing from the AK4490EN.
High-resolution audio sources are supported for digital input, up to 768kHz PCM and 11.2MHz DSD data.
The AK4492 has six types of 32-bit digital filters, giving simple and flexible sound tuning in a wide range of applications.

AK4492ECB Specifications

AK4492ECB
AK4492ECB
High-end
Premium D/A Converter
DR, S/N127dB
THD+N-115dB
Sampling Rate8 to 768kHz
DSD Input2.8MHz, 5.6MHz, 11.2MHz
Sound Color6 types 32-bit 8x Digital Filter
OutputLow Distortion Differential Output
Power Consumption155mW
Power Supply (with Internal LDO) TVDD=AVDD= 3.0 to 3.6V, VDDL/R= 4.75 to 5.25V
Power Supply (without Internal LDO) TVDD=AVDD= (DVDD) to 3.6V, DVDD= 1.7 to 1.98V, VDDL/R= 4.75 to 5.25V
Operation Temperature-40 to 85°C
Package96-pin WLCSP (5.64mm x 5.64mm)

Line-up

Product Name AK4492ECBAK4492ECB
High-end
Premium
D/A Converter
AK4490ENAK4490EN
High-end
Premium
D/A Converter
DR, S/N127dB120dB
THD+N
(Total Harmonic Distortion plus Noise)
-115dB-112dB
Sampling Rate8 to 768kHz30 to 768kHz
DSD Input
Max 11.2MHzMax 11.2MHz
Sound Color6 types, 32-bit 8x Digital Filter
- Acoustic Sound
- Acoustic Tone
- Traditional Sound
- Traditional Tone
- Natural Tone
- Harmonic Sound
5 types, 32-bit 8x Digital Filter
- Acoustic Sound
- Acoustic Tone
- Traditional Sound
- Traditional Tone
- Natural Tone
Resolution32-bit32-bit
Channel2ch2ch
OutputLow Distortion Differential OutputLow Distortion Differential Output
VELVET SOUND
Technology
・Low Distortion Technology
・OSRD(Over Sampling Ratio Doubler)Technology
・Low Distortion Technology
・OSRD(Over Sampling Ratio Doubler)Technology
Power Consumption155mW100mW
Power Supply(with Internal LDO)
TVDD=AVDD= 3.0 to 3.6V
VDDL/R= 4.75 to 5.25V
(without Internal LDO)
TVDD=AVDD= DVDD to 3.6V
VDDL/R= 4.75 to 5.25V
DVDD= 1.7 to 1.98V
(with Internal LDO)
TVDD=AVDD= 3.0 to 3.6V
VDDL/R= 4.75 to 5.25V
(without Internal LDO)
TVDD=AVDD= DVDD to 3.6V
VDDL/R= 4.75 to 5.25V
DVDD= 1.7 to 1.98V
Operation Temperature-40 to 85°C-40 to 85°C
Package96-pin WLCSP (5.64mm x 5.64mm)48-pin QFN (6mm x 6mm)
Sales Start2017.4Available Now

Ultra-low Noise/Distortion Headphone Amplifier "AK4205",
with an analog switch feature optimized to portable applications

AK4205EN
AK4205EN
Premium Headphone Amplifier

The AK4205 is a stereo headphone amplifier targeting high resolution with a built-in analog switch for mobile Hi-Fi.  The AK4205 is housed in a small 36-pin QFN package, which saves the mounting area in the system board by integrating resistors for gain adjustment and a low-pass filter.

AK4205EN Specifications

AK4205EN
AK4205EN
Ultra-low Noise/Distortion
Stereo Headphone Amplifier
DR, S/N124dB
THD+N-118dB@32 Ω / -120dB@600 Ω
InputDifferential
Gain Setting ResisterIntegrated
LPFSecond LPF
Analog SwitchIntegrated
Path SwitchingPossible(Audio⇔AUX)
Output Level1Vrms (RL=32Ω, THD+N= -118dB)
2Vrms (RL=600Ω, THD+N= -120dB)
Pop and Click Noise-less SwitchingPossible
Negative Power Supply of Analog SwitchIntegrated
Mute-115dB
Power Consumption79mW
Power SupplyPositive Power for Headphone Amp: 6.0V, Negative Power for Headphone Amp: -5.0V
Reference Voltage: 6.0V, Analog Switch Power: 3.3V
Operation Temperature-40 to 85°C
Package36-pin QFN (5.0mm x 5.0mm)

2ch Output Ultra-low Noise LDO Regulator "AK1110",
is capable of providing a reference voltage suitable for DACs.

AK1110AEU
AK1110AEU
Premium LDO

The AK1110 is a dual output low dropout linear regulator that accomplishes both low noise and high PSRR characteristics.  A small PLP10-2725 package with heat sink is used.  The best sound quality can be achieved since the AK1110 divides the VREF and VDD lines internally to avoid noise interference.

AK1110AEU Specifications

AK1110AEU
AK1110AEU
2ch output Low Noise High PSRR
Audio
LDO Regulator
Input Voltage Range6 to 14V
Maximum Output CurrentLDO1: 200mA / LDO2: 100mA
Output VoltageLDO1: 5.0V / LDO2: 5.0V
In/Output Voltage DifferenceLDO1: 360mV / LDO2: 360mV
Output NoiseLDO1: 2μVRMS (f=10Hz to 100kHz) / LDO2: 1μVRMS (f=10Hz to 100kHz)
Ripple RejectionLDO1: 83dB (f=1kHz) / LDO2: 100dB(f=1kHz)
NP Terminal to Reduce Output NoiseExisting
On/Off Control FunctionExisting
Over Current ProtectionIntegrated
Thermal ProtectionIntegrated
Ceramic Capacitor Available
Operation Temperature-40 to 85°C
Package10-pin PLP (2.7mm × 2.5mm)
VELVET SOUND
About VELVET SOUND™

VELVET SOUND™ is a brand concept of, “sound philosophy”, given to AKM’s new generation of audio devices and, “new architecture & core technologies”. A new circuit is designed to, “balance the amount of information and intensity”, and, “focus on the original sound”, to achieve rich musicality and high performance. This circuit contains specifications and features suitable for the high-resolution audio era.

Audio 4 Pro
About Audio 4 Pro™

Audio 4 Pro™ products are designed for pro audio equipment, including mixing consoles, electronic musical instruments and sound effectors, meeting the highest sound quality standards of recording studios. Audio 4 ProTM products range provides world-leading performance with high quality sound, winning trust within professional audio industry.

* Information on this page is current on the date of press release.
* AKM, VELVET SOUND logo™ and Audio 4 Pro™ are trademarks of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States.
* Appellations, company names and product names on this page are trademarks or registered trademarks of respective companies.

Related Contents

“Spatial Expressing Sound”


A New Generation D/A Converter


Such as, "listening to directional sound",
the sound details are captured clearly and
preserving the emotions the artist expressed
without noise and distortion.
AKM uses all their technology resources
for first-rate quality sound.


Designed by VELVET SOUND

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