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The AK4376 is now the best analog performance, high sound quality advanced D/A converter with headphone amplifier integrated into a tiny CSP package.

2016-01-14 | Return

[Product Name]
AK4376ECB

[General Description]
32-bit Advanced Stereo D/A Converter with Headphone Amplifier
DR,S/N: 125dB　THD+N: -106dB　Support up to 384kHz Sampling Rate

[Applications]
Portable Audio (Smartphones, Tablets, Portable Music Players and etc.)

[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.

● Realizing the Highest Performance of Sound Quality in the industry
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. 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]
● DAC
32-bit Advanced Audio Stereo D/A Converter
4 types of Digital Filter for Sound Color Selection
● Headphone Amplifier
Ground-referenced Class-G Stereo Headphone-Amp
THD+N: 106dB　S/N: 125dB
● Digital Audio Interface Sampling Rate: Maximum 384kHz
● Low Jitter PLL
● Crystal Oscillator
● Microcomputer Interface: I2C (400kHz)
● Power Supply: Analog: 1.7 ~ 1.9V　Digital: 1.65 ~ 3.6V
● Operation Temperature Range: -40 ~ 85℃
● Package: 36-pin CSP, 2.74 x 2.56 mm

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

[Line-up]
● 32-bit Advanced Stereo D/A Converter with Headphone Amplifier

Product Name	AK4376ECB Advanced D/A Converter with Headphone Amplifier	AK4375AECB Advanced D/A Converter with Headphone Amplifier
DAC	32-bit Advanced Stereo D/A Converter	32-bit Advanced Stereo D/A Converter
Sound Color	4 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 Amplifier	Ground 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/N	125dB	110dB
THD+N	-106dB	-99dB
Digital Audio Interface	Sampling Rate: 384 kHz (max) Master/Slave Mode	Sampling Rate: 192 kHz (max) Master/Slave Mode
SRC	Not Available	Asynchronous Sampling Rate Converter: - Up-sampling: 6 times - Down-sampling: 1/6 times
Low Jitter PLL	Available
Crystal Oscillator	Available
Power Management Function	Available
Resolution	32-bit
Number of Channel	2ch
Microcomputer Interface	I²C (400kHz)
VELVET SOUND Technology	Switched Capacitor Filter OSRD (Over Sampling Ratio Doubler) Technology
Power Consumption	36.6 / 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
Package	36-pin CSP (2.74mm x 2.56mm, 0.4mm pitch)	36-pin CSP (2.37mm x 2.62mm, 0.4mm pitch)
Sales Start	Dec. 2015	Aug. 2014

Source：http://www.akm.com/