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AK4558EN Interface - CODECs: Pinout, Datasheet

Author: Victoria
Date: 10 Jan 2023
ak4558en applications


AK4558EN Overview

AK4558EN Features

AK4558EN Pin Layout

AK4558EN CAD Models

AK4558EN Block Diagram

AK4558EN Package

AK4558EN Specification

AK4558EN Manufacturer

AK4558EN Datasheet

AK4558EN Overview

The AK4558 is a low voltage 32bit 216kHz CODEC for high performance battery powered digital audio subsystems. An internal circuit includes newly developed 32-bit Digital Filter achieving short group delay and high quality sound. In addition, “OSR-Doubler” technology is newly adopted, making the AK4558 capable of supporting wide range signals and achieving low out-of-band noise while realizing low power consumption. The AK4558 is ideal for a wide range of applications that demands high sound quality including Electronic musical instruments and Audio Interfaces. The analog inputs and outputs are single-ended to minimize pin count and external filtering requirements. The AK4558 is housed in a very small 28-pin QFN. It is ideal for space-sensitive applications.

This blog will introduce AK4558EN systematically from its features, pinout to its specifications, applications, also including AK4558EN datasheet and so much more.

AK4558EN Features

Single-ended ADC

- Dynamic Range, S/N: 108dB@AVDD=3.3V

- S/(N+D): 92dB@AVDD=3.3V

- Selectable HPF for DC-offset cancel (fc = 1Hz @ fs=48kHz)

- 4-types Digital Filter for High Sound Quality o

Single-ended DAC

- Dynamic Range, S/N: 108dB@AVDD=3.3V

- S/(N+D): 100dB@AVDD=3.3V

- Digital de-emphasis for 32kHz, 44.1kHz and 48kHz sampling

- 5-types Digital Filter for High Sound Quality

- Channel Independent Digital Attenuator (256 levels, 0.5dB steps) o Audio I/F format: MSB First, 2’s Complement

- ADC: 24/32bit MSB justified , 24/32bit I2S compatible or TDM

- DAC: 24/32bit MSB justified, 16/20/24/32bit LSB justified, 24/32bit I2S compatible or TDM o

Input/Output Voltage: ADC = 2.64Vpp @ AVDD=3.3V

DAC = 2.51Vpp @ AVDD=3.3V o

Master/Slave mode o m

μP I/F: I 2C Bus o

Sampling Rate:

  • PLL Mode
  • PLL Slave Mode (LRCK pin): fs = 8kHz~216kHz
  • PLL Slave Mode (BICK pin): fs = 8kHz~216kHz
  • PLL Master Mode: 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz, 54kHz, 88.2kHz, 96kHz, 128kHz, 176.4kHz, 192kHz
  • External Clock Mode
  • Normal Speed: 8kHz to 54kHz (256fs or 512fs) 8kHz to 48kHz (384fs or 768fs)
  • Double Speed: 54kHz to 108kHz (256fs) 48kHz to 96kHz (384fs)
  • Quad Speed: 108kHz to 216kHz (128fs) 96kHz to 192kHz (192fs)

Master Clock:

  • PLL Mode
  • MCKI pin: 27MHz, 26MHz, 24MHz, 19.2MHz, 13.5MHz, 13MHz, 12.288MHz, 12MHz, 11.2896MHz
  • LRCK pin: 1fs
  • BICK pin: 32fs, 64fs, 128fs(TDM), 256fs(TDM)
  • External Clock Mode (MCKI pin)
  • Slave mode: 256fs, 384fs, 512fs or 768fs (Normal Speed)

256fs or 384fs (Double Speed)

128fs or 192fs (Quad Speed)

  • Master mode: 256fs or 512fs (Normal Speed)

256fs (Double Speed) 128fs (Quad Speed) o

Power Supply:

  • AVDD = 2.4 to 3.6V (typ. 3.3V)
  • TVDD = 1.7 to 3.6V (typ. 1.8V) o

Power Supply Current: 18mA(fs=48kHz) o

Ta = -40 to 105°C o

Package: 28-pin QFN (0.5mm pitch)

AK4558EN Pin Layout

The following figure is the diagram of AK4558EN pinout.


AK4558EN Pin Layout

AK4558EN CAD Models

The following are AK4558EN Symbol, Footprint, and 3D Model.


AK4558EN Symbol


AK4558EN Footprint


AK4558EN 3D Model

AK4558EN Block Diagram

The following figure shows the block diagram of AK4558EN.


AK4558EN Block Diagram

AK4558EN Package

The following diagram shows the AK4558EN package.


AK4558EN Package

AK4558EN Specification

Product Attribute

Attribute Value


Asahi Kasei Microdevices

Product Category:

Interface - CODECs


Audio CODECs




32 bit

Conversion Rate:

216 kHz

Interface Type:


Number of ADCs:


Number of DACs:


Supply Voltage - Max:

3.6 V

Supply Voltage - Min:

3 V

Minimum Operating Temperature:

- 40 C

Maximum Operating Temperature:

+ 105 C

Mounting Style:





Cut Tape




Asahi Kasei Microdevices

Moisture Sensitive:


Product Type:


Factory Pack Quantity:



Interface ICs

Unit Weight:

0.001764 oz

AK4558EN Manufacturer

Asahi Kasei Microdevices provides a wide portfolio of advanced sensing devices built on compound semiconductor technology and high-end IC products that feature analog/digital mixed-signal technology. These solutions and products expand over various fields, including mobile communication devices, consumer products, automotive electronics devices, household equipment, and industrial equipment.

AK4558EN Datasheet

You can download AK4558EN datasheet from the link given below:

AK4558EN Datasheet

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