AK4386ET - 24-Bit 96kHz Stereo Audio DAC | AKM
MPN： AK4386ET ✗ 停產AK4386ET 概覽
A stereo DAC converts digital audio samples into left- and right-channel analog signals for subsequent amplification and speaker or headphone drive. The AK4386 belongs to the delta-sigma DAC hierarchy, where a multi-bit internal architecture and digital reconstruction filters shape the output waveform. This component therefore fits between an audio source and an analog output stage in portable, home-audio, set-top-box, and similar digital audio systems.
The AK4386 uses AKM's Advanced Multi-Bit Delta-Sigma architecture. According to the AK4386 manufacturer datasheet, this architecture provides a dynamic range of 100 dB at a 3 V supply. The device combines SCF and CTF filters to improve performance in systems experiencing excessive clock jitter. Its 24-bit resolution supports high-resolution digital audio, while the two-channel organization covers standard stereo playback in one compact device.
The AK4386 operates from a single supply in the 2.2 V to 3.6 V range, making it appropriate for low-voltage portable equipment. Its electrical interface includes I2S, a common serial format for transferring audio data between digital signal processors, audio processors, and converters. The datasheet identifies the AK4386 as a low-voltage, low-power component designed for portable audio systems including MP3 equipment, as well as home-audio systems such as set-top boxes.
Typical uses include portable music players, home-audio equipment, digital set-top boxes, game-console audio paths, and other embedded stereo audio products. The 16-pin TSSOP package supports conventional surface-mount assembly, while a 0.650 mm pin pitch provides a compact footprint for space-constrained boards. The reel packaging format is intended for automated component placement and high-volume production.
When designing a circuit around the AK4386, treat clock quality, supply stability, and analog-output grounding as integral parts of the audio path. Keep the converter and its decoupling close to the audio source, follow the manufacturer pin-description table for every connection, and reserve quiet analog routing for the left- and right-channel outputs. Digital and analog return currents should not share a noisy path.
This page consolidates the AK4386ET electrical characteristics, package information, application guidance, pin-data status, and drop-in-replacement analysis. It also identifies where engineering decisions depend on the manufacturer datasheet, including clocking, filter configuration, analog output implementation, and PCB layout.
直接替換替代品，適用於 AK4386ET — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品AK4386ET 最大額定值與電氣特性
| Device Type | Stereo audio DAC |
| DAC Architecture | Advanced Multi-Bit Delta-Sigma |
| 解析度 | 24 bit |
| Number of Channels | 2 channels |
| Maximum Sampling Rate | 96 kHz |
| Dynamic Range | 100 dB at 3 V |
| Supply Voltage Range | 2.2 V to 3.6 V |
| Supply Type | Single supply |
| Data Interface | I2S |
| Integrated Filters | SCF and CTF |
| 工作溫度 | -20 °C to +85 °C |
| 封裝 | TSSOP-16 |
| 腳位數 | 16 pins |
| Pin Pitch | 0.650 mm |
| 安裝類型 | Surface mount |
| Packaging Type | Reel |
AK4386ET tssop-16 腳位配置指南
AK4386ET（tssop-16 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： AK4386ET.
請參閱 資料表 以查看完整腳位配置。
典型應用
AK4386ET 適用於 6 應用s: Portable MP3 Player, Home-Audio Set-Top Box, Game-Console Audio Output, Digital Audio Decoder, Headphone Amplifier Front End, Digital Speaker Amplifier Input.
Portable MP3 Player
The AK4386ET fits a portable MP3 player because it combines a 24-bit stereo DAC with a low 2.2 V to 3.6 V single-supply range and a documented operating temperature of -20 °C to +85 °C. It can sit between an audio decoder or digital signal processor and a headphone amplifier, using the I2S interface to carry the two-channel stream. The Advanced Multi-Bit Delta-Sigma architecture achieves 100 dB dynamic range at 3 V, providing useful headroom for portable playback. Its 16-pin TSSOP package also limits board area compared with two separate converter channels.
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Home-Audio Set-Top Box
The AK4386ET is directly suited to a set-top box because the AK4386 manufacturer datasheet identifies home-audio systems as a typical use. The decoder or application processor can deliver 24-bit left- and right-channel data over I2S at up to 96 kHz, and the converter can then drive an analog audio amplifier. Operation from a 2.2 V to 3.6 V supply supports compact consumer-electronics power designs. The integrated SCF and CTF filters also make the part relevant when the system clock contains excessive jitter and the design requires improved filtering behavior.
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Game-Console Audio Output
The AK4386ET can serve as the stereo conversion stage in a game-console audio subsystem when the host processor provides a compatible I2S stream. Its two-channel architecture supports separate left- and right analog outputs, while 24-bit resolution and a 96 kHz sampling-rate capability suit contemporary game audio. The 2.2 V to 3.6 V operating range allows deployment around a low-voltage system rail, and the TSSOP-16 package supports automated surface-mount assembly. Board-level validation should cover clock ratios, mute behavior, startup timing, analog filtering, and the following amplifier input.
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Digital Audio Decoder
The AK4386ET can provide the final analog stage of a digital audio decoder because the converter accepts I2S data and produces two analog output channels. A decoder chipset can perform demultiplexing, decoding, and volume processing before forwarding a 24-bit stream at up to 96 kHz. The AK4386's 100 dB dynamic range at 3 V helps preserve low-level detail, while the 16-pin TSSOP package keeps the converter compact. Place the device close to the decoder interface and maintain a quiet analog return to avoid coupling digital switching activity into the output stage.
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Headphone Amplifier Front End
The AK4386ET is appropriate ahead of a low-noise headphone amplifier when the source provides digital I2S audio and the product target calls for more resolution than a basic integrated codec may provide. Its two analog channels can feed a balanced or single-ended headphone driver, while 24-bit conversion and up to 96 kHz sampling support high-resolution source material. The converter's low-voltage operation suits battery-powered headphones. The design should preserve the manufacturer's recommended output-network topology and keep the headphone amplifier's input path physically separated from switching regulators and digital clock traces.
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Digital Speaker Amplifier Input
The AK4386ET can provide the analog input signal for a digital speaker amplifier in a compact audio product. The digital amplifier controller receives left- and right-channel I2S data, while the AK4386ET converts that stream to analog voltage suitable for the amplifier's input stage. This arrangement separates decoding and conversion from amplification and can support 24-bit content at 96 kHz. Layout is critical: keep the converter's analog outputs short, provide local supply bypassing, and compare the converter output amplitude with the downstream amplifier's input range before adding any gain stage.
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工程參考資料，適用於 AK4386ET — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Device Type | Stereo audio DAC |
| Brand | AKM Semiconductor, Inc. |
| Package | TSSOP-16 |
| Resolution | 24 bit |
| Number of Channels | 2 channels |
| Maximum Sampling Rate | 96 kHz |
| Dynamic Range | 100 dB at 3 V |
| Supply Voltage Range | 2.2 V to 3.6 V |
| Digital Interface | I2S |
| DAC Architecture | Advanced Multi-Bit Delta-Sigma |
| Operating Temperature | -20 °C to +85 °C |
| Mounting Type | Surface mount |
主要差異化特點
- Compact two-channel high-resolution conversion (對比Discrete single-channel DAC implementation)
- Low-voltage operation suitable for portable audio (對比Higher-voltage legacy stereo DAC)
- Integrated filter architecture for clock-jitter-sensitive systems (對比Basic digital reconstruction-filter DAC)
設計說明
Use the manufacturer pin-description table to build the PCB footprint and assign every TSSOP-16 connection. Place the AK4386ET near the digital audio source, keep the I2S traces short, and route analog left- and right-channel outputs away from clock and data nets. The mixed-signal layout should use a continuous ground reference and avoid splitting the ground plane beneath the converter unless the manufacturer application guidance explicitly requires it.
Operate the AK4386ET from a regulated single supply within its 2.2 V to 3.6 V range. Place the required bypass capacitors directly beside the relevant supply and ground pins, and keep the analog and digital return paths low impedance. Because the converter is intended for low-voltage portable and home-audio equipment, verify startup, rail sequencing, and the maximum voltage on every connected control signal against the manufacturer specifications.
Treat the I2S clock as a critical signal. Route clock, data, and word-select lines together where practical, provide a continuous reference plane, and avoid crossing them with analog output paths. The AK4386 integrates SCF and CTF filters to improve performance in systems with excessive clock jitter, but those filters do not remove the need for a clean source. Validate eye timing and jitter at the converter pins with the intended digital audio source.
合規資訊
No specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration was identified for the AK4386ET.
