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AK4493EQ

Name: AK4493EQ
Rating: 4.7 (12 reviews)

IC DAC/AUDIO 32BIT 768K 48LQFP

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Mfr.부분 #AK4493EQ
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사양

Part Status	Obsolete
Base Product Number	AK4493
Type	DAC, Audio
Number of Channels	2
Resolution (Bits)	32 b
Sampling Rate (Per Second)	768k
Data Interface	DSD, I2S
Voltage Supply Source	Analog and Digital
Voltage - Supply	3V ~ 3.6V, 4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package	48-LQFP
Supplier Device Package	48-LQFP (7x7)
Packaging	Tray

개요

Description

AK4493EQ is a high‑end stereo DAC IC from Asahi Kasei Microdevices (AKM). It uses a 32‑bit delta‑sigma core with current‑output DACs and requires an external I/V stage and reconstruction filters. The device supports standard digital interfaces (I2S, left/right justified, etc.) and a wide range of PCM sample rates (and related formats), with selectable digital filters for sound shaping. It offers adjustable gain and other options to optimize noise, distortion, and dynamic range. Applications include high‑fidelity DAC modules, AV receivers, network/transport audio gear, headphone amps, and other consumer or professional audio equipment. In short, AK4493EQ provides precise, low‑distortion digital‑to‑analog conversion with flexible interface and output options for quality audio reproduction.

Features

Here are the core features of the AK4493EQ (32-bit DAC by AKM):
- 32-bit stereo DAC core (AK4493)
- PCM support: up to 32-bit data, high sample rates (typical: hundreds of kHz range)
- DSD support: DoP and native DSD (up to high-grade DSD rates)
- Digital interfaces: I2S (various formats), Left-Justified, Right-Justified; master/slave options
- Output: current-output DAC requiring external I/V conversion and reconstruction filter
- Optional digital filter/processing options and jitter reduction features
- High dynamic range and low distortion: very good SNR and low THD+N
- Suitable for high-end audio gear (DACs, audio players, receivers) with compact packaging
Note: exact numeric limits (e.g., exact max sample rate, DSD rate, and typical SNR/THD figures) are specified in the datasheet for your specific part revision and implementation.

Package

AK4493EQ comes in a 28-pin LQFP package (7×7 mm). Some vendors may also offer a 28-pin QFN variant.

Pinout

- Pin count: 28 pins (packages: 28-pin LQFP/TQFN variants)
- Function: 24-bit stereo DAC (AKM). Digital interface supports I2S/PCM formats (needs MCLK, BCLK, LRCLK, DIN). Outputs are analog LOUT and ROUT (current-output requiring external I/V and reconstruction filters). Requires separate analog/digital supplies (AVDD/DVDD) and grounds (AGND/DGND). Includes pins for reference and control (e.g., VREF/reset) depending on package.

Manufacturer

- Manufacturer: Asahi Kasei Microdevices Corporation (AKM), often styled AKM.
- Company type: A Japanese semiconductor company that designs and manufactures analog and mixed-signal integrated circuits, including audio DACs/ADCs; subsidiary of the Asahi Kasei Corporation.

Application

Applications areas of AK4493EQ:
- Hi‑fi and digital streaming players
- Audio interfaces and professional DACs
- Network audio players and DAC modules
- AV receivers, Blu-ray/DVD players, set‑top boxes
- Automotive infotainment and head units
- Embedded/consumer electronics DAC boards and evaluation kits

Equivalent

Direct substitute: AK4493 (standard) is essentially the same core as AK4493EQ.
Closest AKM equivalents:
- AK4490
- AK4495
- AK4497 (higher-end)
Note: AK4493EQ is an enhanced variant; verify datasheet for pinout, register maps, and analog/output differences before swapping.