AK4377ECB

High Sound Quality Advanced DAC with HP

  • Inquiry
  • Data Sheet

Description

AK4377ECB
VELVET SOUND
The AK4377 is stereo advanced 32-bit high sound quality audio DAC with a built-in ground-referenced headphone amplifier that adopted VELVET SOUND technology.  The AK4377 has four types of 32-bit digital filters for better sound quality, achieving low distortion characteristics and wide dynamic range.  AK4377 accepts up to 768kHz PCM data and DSD256 input.  The AK4377 is available in a 36-pin CSP package, utilizing less board space than competitive offerings.
AK4437ECB

AK4377ECB

● High Resolution Sound Source | Support of DSD256 Input

The AK4377 accepts up to 768kHz PCM data and DSD256 input.  It can fully decode the large amount of information from the source, reproducing the original sound in the highest resolution.

● Enhanced Audio Performance

The AK4377 achieves -109dB THD+N and 128dB SNR, which is top performing for a compact DAC with headphone amplifier in portable audio.  The AK4377 exhibits flat THD+N characteristics of -105dB or less in all audible bands, enhancing the ability to reproduce the original sound.

● Live Acoustic Sound with VELVET SOUND Architecture

The AK4377 achieves fine, detailed sound playback via the, “VELVET SOUND”, architecture adopted in AKM premium DACs for high-end audio products.

● Application

Portable Audio, (Smartphones, Tablets, Portable Music Players, USB Headphones, Bluetooth Headphones, etc.)

Key Features

 Product Name  AK4377ECBAK4377ECB
 Advanced D/A Converter
     with Headphone Amplifier
 
AK4376AECBAK4376AECB
 Advanced D/A Converter
     with Headphone Amplifier
 
 DAC
 32-bit Advanced Audio Stereo D/A Converter
  Sound Color
 4 Types, 32-bit 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: 60mW @ 16Ω
     - Output Noise Level: -129dBV
     - Analog Volume: +4 to -20dB & Mute
     - Ground Loop Noise Canceling
 Ground Referenced Class-G Stereo Headphone Amplifier
     - Output Power: 60mW @ 16Ω
     - Output Noise Level: -126dBV
     - Analog Volume: +6 to -20dB & Mute, 2dB Step
     - Ground Loop Noise Canceling
  SNR  128dB
 125dB
  THD+N  -109dB  -107dB
 Sampling Rate  8 to 768kHz
 Master/Slave Mode
 8 to 384kHz
 Master/Slave Mode
 DSD Input
 DSD64/DSD128/DSD256 (DoP (DSD over PCM) Input)
 Not Available
 Low Jitter PLL
 Available
 Crystal Oscillator  Available
 Power Management Function
 Available
 Resolution
 32-bit
 Number of Channel  2 channels
 Microcomputer Interface  I2C (400kHz)
 VELVET SOUND Architecture  Switched Capacitor Filter
 OSRD (Over Sampling Ratio Doubler) Technology
 Power Consumption
 59.7 / 20.7mW (HP Mode / LP Mode, fs=44.1kHz)
 36.3 / 13.7mW (HP Mode / LP Mode, fs=44.1kHz)
 Power Supply
 AVDD (DAC, PLL): 1.7 to 1.9V
 CVDD (Headphone Amplifier, Charge Pump): 1.7 to 1.9V
 LVDD (LDO2 for Digital Core): 1.7 to 1.9V (built-in LDO)
 TVDD (Digital Interface): 1.65 to 3.6V
 Operation Temperature  -40 to 85°C
 Package  36-pin CSP (2.893 x 3.082mm, 0.4mm pitch)  36-pin CSP (2.74 x 2.56mm, 0.4mm pitch)
 Sales Start
 May 2018  May 2017

>> Read more

Block Diagram

Block Diagram

Page Top

top