News Release

- New Product Information -

2016/01/15 (updated 2017/05/01)
The AK4376 is now the best analog performance, high sound quality advanced D/A converter with headphone amplifier integrated into a tiny CSP package

Product Name
AK4376AECB
(Products: Silicon Solutions > Audio > Advanced Audio)
Title
32-bit Advanced Stereo D/A Converter with Headphone Amplifier
DR,S/N: 125dB THD+N: -107dB Support up to 384kHz Sampling Rate
Applications
Portable Audio (Smartphones, Tablets, Portable Music Players and etc.)
VELVETSOUND Audio2Go

Description

Since the market demands for high quality sound for smartphones and potable music players are increasing by the growing availability of high-resolution sound sources, Asahi Kasei Microdevices Corporation (AKM), a leading supplier of high quality portable audio, launched the AK4376 that adopts VELVET SOUND TM technology. This 32-bit advanced D/A converter (DAC) with a headphone amplifier is a higher performing solution of the AK4375A that is adopted by many portable audio products since it was launched in 2014. The AK4376 achieves -106dB THD+N and 125dB SNR, the best performance in the field as a compact DAC with headphone amplifier for portable audio products. The digital input format corresponds to high resolution sound sources and supports PCM input up to 384 kHz.

The AK4376 has been introduced in CES2016 that is held from 6th Jan. at Las Vegas, NV, USA.

AK4376AECB
Advanced DAC AK4376AECB
● Realizing the Highest Performance of Sound Quality in the industry

The AK4376 achieves -107dB THD+N and 125dB SNR, the best performance in the field as a compact DAC with headphone amplifier for portable audio products. Reproducible performance of original acoustic sounds is also improved, showing -100dB or better performances in all audible bands.

● Live Acoustic Sound by VELVET SOUND TM Technology

The AK4376 realizes fine sound detail playback by “VELVET SOUND TM” technologies such as OSRD (Over Sampling Ratio Doubler) and AKM’s original filter for switched capacitors technologies adopted in AKM premium DACs for high-end audio products. Four different types of 32-bit digital filter are selectable according to the user audio and system preferences.

● Small Package and Low Power Consumption for Portable Devices

The AK4376 is housed in an ultra-small 36-pin CSP package (2.74mm x 2.56mm), enabling premium performance in a very small footprint. In addition, a low power consumption that is necessary for portable devices is achieved by the advanced audio technology for smartphones. The AK4376 can be driven off of a 1.8V single power supply. It is ideal for various systems including portable applications.

Features

AK4376ECB
AK4376AECB
Advanced D/A Converter with Headphone Amplifier
Product NameAK4376AECB
DAC32-bit Advanced Audio Stereo D/A Converter
4 types of Digital Filter for Sound Color Selection
Headphone AmplifierGround-referenced Class-G Stereo Headphone-Amp
THD+N: 107dB S/N: 125dB
Digital Audio InterfaceSampling Rate: Maximum 384kHz
Low Jitter PLL
Crystal Oscillator
Microcomputer InterfaceI2C (400kHz)
Power SupplyAnalog: 1.7 to 1.9V Digital: 1.65 to 3.6V
Operation Temperature Range-40 to 85°C
Package36-pin CSP, 2.74 x 2.56 mm

>> To obtain more information about the AK4376, please visit here.

Lineup

32-bit Advanced Stereo D/A Converter with Headphone Amplifier
Product Name NEW AK4376AECB
Advanced D/A Converter
with Headphone Amplifier AK4376AECB
AK4375AECB
Advanced D/A Converter
with Headphone AmplifierAK4375AECB
DAC32-bit Advanced Stereo D/A Converter
   Sound Color4 Types, 32b-it 8-fold Digital Filters
- Short Delay Sharp Roll Off, GD=5.5/fs
- Short Delay Slow Roll-off, GD=4.7/fs
- Sharp Roll-off
- Slow Roll-off
Headphone AmplifierGround Referenced Class-G Stereo Headphone Amplifier
- Output Power: 25mW @ 32Ω , 40mW @ 16Ω , THD+N < 0.1%
- Output Noise Level: -125dBV (Analog Volume < -14dB)
- Analog Volume: +6 to -20dB & Mute, 2dB Step
- Ground Loop Noise Canceling
Ground Referenced Class-G Stereo Headphone Amplifier
- Output Power: 25mW @ 32Ω, 40mW @ 16Ω, THD+N < 0.1%
- Output Noise Level: -119dBV (Analog Volume < -14dB)
- Analog Volume: +6 to -40dB & Mute, 2dB Step
- Ground Loop Noise Canceling
  DR, S/N125dB110dB
  THD+N-107dB-99dB
Digital Audio InterfaceSampling Rate: 384 kHz (max)
Master/Slave Mode
Sampling Rate: 192 kHz (max)
Master/Slave Mode
SRCNot AvailableAsynchronous Sampling Rate Converter:
- Up-sampling: 6 times - Down-sampling: 1/6 times
Low Jitter PLLAvailable
Crystal OscillatorAvailable
Power Management FunctionAvailable
Resolution32-bit
Number of Channel2ch
Microcomputer InterfaceI2C (400kHz)
VELVET SOUND Technology・ Switched Capacitor Filter
・ OSRD (Over Sampling Ratio Doubler) Technology
Power Consumption36.6 / 13.7mW (HP Mode / LP Mode, fs=44.1kHz)9.5mW (fs= 44.1kHz)
Power Supply・ AVDD (DAC, PLL): 1.7 to 1.9V
・ CVDD (HP-Amp, Charge Pump): 1.7 to 1.9V
・ LVDD (LDO2 for Digital Core): 1.7 to 1.9V (built-in LDO)
・ TVDD (Audio I/F): 1.65 to 3.6V
Operation Temperature-40 to 85°C
Package36-pin CSP (2.74mm x 2.56mm, 0.4mm pitch)36-pin CSP (2.37mm x 2.62mm, 0.4mm pitch)
Sales Start
Aug. 2014
VELVETSOUND
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.

Audio2Go
Audio 2 Go
About "Audio 2 Go"

Audio 2 Go™ products are designed for portable audio applications, including smartphones, tablet computers and media players, which provide feature-rich, single chip solution with low power consumption and high audio fidelity.

[Notes]
* Information on this page is current on the date of press release.
* * AKM, VELVET SOUND logo™ and Audio 2 Go™ 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.

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