AK4497EQ - 32-Bit 2-Channel 128dB Audio DAC | AKM
部品番号: AK4497EQ ✓ 生産中AK4497EQ 概要
A digital-to-analog converter, or DAC, is an integrated circuit that converts digital PCM or DSD audio data into continuous analog voltage signals for downstream amplifiers, headphones, or line-level equipment. The AK4497EQ belongs to the audio DAC family within the broader semiconductor and signal-conversion hierarchy. Its dual-channel architecture allows simultaneous left- and right-channel playback, while its high-resolution format support makes it suitable for premium audio systems that require faithful reproduction of digital recordings.
The AK4497's defining feature is the VELVET SOUND architecture, which the manufacturer describes as delivering low distortion and wide dynamic range. The device also integrates an OSR Doubler switched-capacitor filter. According to the manufacturer description, this filter supports a wide range of input signals, lowers out-of-band noise, and helps reduce power consumption. These characteristics make the converter useful in designs where analog output purity and high-resolution playback are more important than a compact, low-cost audio implementation.
The AK4497EQ supports 32-bit PCM audio and DSD playback up to 768 kHz. It is packaged in a 64-pin HTQFP surface-mount package with a 10 mm by 10 mm body. The package format provides a substantial thermal and routing footprint for a high-performance stereo converter, but it also requires a carefully designed PCB with adequate exposed-pad handling, clean analog grounding, and separation between digital and analog signal paths.
Typical applications include premium desktop and portable DACs, network audio players, high-resolution headphone amplifiers, digital audio workstations, and consumer audio receivers requiring DSD support. The AK4497EQ is particularly appropriate when the system must accept high-rate digital formats while preserving a low-noise analog output stage. It is also suitable for custom audio platforms where the converter is paired with a high-quality output amplifier, analog filter, and precision clock source.
For implementation, use the manufacturer's datasheet for the exact pin assignments, recommended application circuit, supported interface modes, clock requirements, and power-supply sequencing. Keep digital clock and data traces away from the analog output section, provide the specified bypass capacitors at the power pins, and route analog return currents without passing through digital return paths.
This product page combines the manufacturer's AK4497EQ datasheet information with package, application, sourcing, and drop-in comparison guidance. It is designed to help engineers evaluate the AK4497EQ for high-resolution stereo DAC implementations while emphasizing the practical PCB and signal-integrity decisions that determine realized audio performance.
ドロップイン代替品: AK4497EQ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: AK4497EQ （同一形状・フットプリント） — 相違点: Device Type, Digital Audio Interface, Manufacturer, Number of Channels, Package Type.
AK4495SEQ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AK4497EQ 最大定格＆電気的特性
| Product Type | Premium stereo audio digital-to-analog converter |
| Number of Channels | 2 channels |
| 分解能 | 32 bit |
| Dynamic Range | 128 dB |
| Maximum DSD Playback Rate | 768 kHz |
| Supported Digital Audio Format | PCM and DSD |
| Signal Architecture | VELVET SOUND architecture |
| Integrated Filter | OSR Doubler switched-capacitor filter |
| Package Type | 64-pin HTQFP |
| Package Dimensions | 10 mm x 10 mm |
| 実装タイプ | Surface mount |
| Product Description | Quality-oriented 128 dB premium 32-bit 2-channel DAC |
| Distortion Characteristics | Low distortion |
| Out-of-Band Noise | Low |
| Power Consumption | Low-power design enabled by the OSR Doubler filter |
| Primary Application | High-end audio equipment |
AK4497EQ 10 mm x 10 mm ピン配置ガイド
AK4497EQ (10 mm x 10 mm パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: AK4497EQ.
詳細は データシート をご参照ください。
主な用途
AK4497EQ の用途: 6 件s: Premium Desktop DAC, Network Audio Player, High-Resolution Headphone Amplifier, Digital Audio Workstation, Portable Hi-Res Audio Player, Premium Two-Channel Audio Receiver.
Premium Desktop DAC
The AK4497EQ fits a premium desktop DAC because it combines 32-bit conversion, 128 dB dynamic range, two-channel analog outputs, and DSD support up to 768 kHz. Place it after the USB or network audio receiver and before a balanced or single-ended output amplifier. The 64-pin HTQFP package provides ample routing space, but the layout must keep digital clocks and data away from the analog output section. The OSR Doubler switched-capacitor filter also helps reduce out-of-band noise while controlling power use. For best results, use the clocking, supply, decoupling, and analog-filter arrangements specified by AKM rather than treating the converter as a generic low-power codec.
おすすめ
Network Audio Player
The AK4497EQ is appropriate for a network audio player that receives high-resolution PCM or DSD streams and requires a low-distortion stereo output. Its 768 kHz DSD capability supports high-rate source material, while the 128 dB dynamic range suits premium conversion requirements. The converter should be preceded by a stable digital audio interface or receiver and followed by a carefully selected analog output stage. Because network players can place the DAC section close to Ethernet and storage circuitry, solid grounding and physical separation from switching circuitry are important. Use short, controlled digital routes and a dedicated low-noise analog supply section.
おすすめ
High-Resolution Headphone Amplifier
The AK4497EQ can provide the digital-to-analog stage for a high-resolution headphone amplifier when the design supports 32-bit PCM or DSD and prioritizes channel symmetry and low distortion. Two-channel output supports the left and right signal paths, while the VELVET SOUND architecture targets clean conversion before the analog headphone driver. The converter should be paired with a low-noise amplifier whose gain and output impedance are appropriate for the selected headphone impedance. Keep the DAC output traces short, use a clean analog ground reference, and decouple each supply domain near the device. The converter does not directly drive headphones without a suitable analog output stage.
おすすめ
Digital Audio Workstation
The AK4497EQ is suitable for a monitoring-oriented digital audio workstation that accepts 32-bit PCM and high-rate DSD and needs a stereo monitoring converter. The 128 dB dynamic range and low-distortion architecture align with accurate playback monitoring, while the two-channel output maps naturally to left and right monitors. For a production workstation, prioritize the manufacturer clock configuration and isolate the converter from display, storage, and interface switching circuitry. A balanced analog output can help maintain signal integrity over longer monitor cables, but its implementation depends on the selected output amplifier and the AK4497EQ application circuit. Validate the complete analog filter and grounding arrangement during prototype testing.
おすすめ
Portable Hi-Res Audio Player
The AK4497EQ can serve as the premium conversion stage in a portable hi-res audio player that supports DSD playback up to 768 kHz and 32-bit PCM. Its low-distortion VELVET SOUND architecture is useful where battery-operated equipment must preserve signal quality without relying on a large external digital-to-analog converter. The 10 mm by 10 mm HTQFP body still requires careful placement in a compact enclosure, and the exposed-pad thermal path must be considered. Low-noise local supply rails and controlled clock routing help prevent noise and jitter from entering the audio path. The design must balance converter performance against total power consumption and analog output-stage requirements.
おすすめ
Premium Two-Channel Audio Receiver
The AK4497EQ suits a premium two-channel receiver or integrated amplifier that accepts digital sources and requires a dedicated high-performance conversion stage. The stereo architecture supports conventional left and right channels, while 32-bit PCM and DSD playback up to 768 kHz accommodate modern digital sources. The 64-pin HTQFP package gives the designer space for separate analog and digital routing, but this advantage depends on disciplined layout rather than wide traces alone. Keep switching-regulator switching nodes, high-current output paths, and digital control lines away from the converter's analog outputs. Use the manufacturer's recommended output filtering and grounding topology to preserve the intended noise and distortion performance.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: AK4497EQ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | AK4495SEQ |
|---|---|---|
| Brand | Asahi Kasei Microdevices/AKM | Asahi Kasei Microdevices/AKM |
| Package | 64-pin HTQFP, 10 mm x 10 mm | 64-HTQFP |
主な差別化要因
- Supports DSD playback up to 768 kHz （vs AK4495SEQ)
- Provides 128 dB dynamic range in a two-channel 32-bit architecture （vs AK4495SEQ)
- Uses the AKM OSR Doubler switched-capacitor filter （vs AK4495SEQ)
設計ノート
Separate the AK4497EQ analog outputs from digital clock, data, and control routing. Place the converter close to its analog output components and route left and right channels symmetrically where practical. Keep the digital interface away from the output pins, avoid routing analog signals beneath digital traces, and use a continuous ground reference that follows the manufacturer application diagram.
Use the exact supply voltages and decoupling network specified in the AK4497EQ datasheet. Place bypass capacitors close to the associated pins and keep their ground returns short. Separate noisy digital and switching-supply paths from the analog supply to prevent supply ripple and digital return currents from appearing across the converter's analog output.
Do not assume that two converters in similar HTQFP packages are interchangeable. Before substituting AK4495SEQ for AK4497EQ, compare every pin, supply rail, clock requirement, interface mode, output circuit, and exposed-pad connection against the manufacturer documentation. A package outline match alone does not establish pin-to-pin compatibility or equivalent dynamic performance.
Treat the 64-pin HTQFP exposed thermal pad as both a thermal path and a layout feature. Follow the manufacturer recommendation for connecting and stitching it, and provide copper area without introducing unintended analog or digital return paths. Validate temperature rise at the intended operating current and enclosure conditions rather than assuming that the large package eliminates thermal analysis.
コンプライアンス情報
No specific compliance declarations for the AK4497EQ were included in the manufacturer and distributor information. Check the current manufacturer product declaration or applicable material-compliance documentation before production release.
