WM8728SEDS/V - 24-Bit Stereo DAC | Cirrus Logic
MPN： WM8728SEDS/V ✓ 啟用中WM8728SEDS/V 概覽
A stereo DAC is an audio interface that accepts digital PCM samples and reconstructs the corresponding left- and right-channel analog waveforms. In the product hierarchy, a DAC belongs to the ADC/DAC class of data-conversion integrated circuits and supports the broader audio-processing chain. The WM8728SEDS/V combines digital audio input, volume control, and analog output stages in one package, reducing the number of external components required in compact audio products.
The converter supports 24-bit digital audio operation at sample rates up to 192 kHz. Its integrated volume control provides a convenient way to adjust playback gain without implementing a separate analog attenuation circuit. The I2S-compatible interface connects to digital audio processors, USB audio bridges, portable media systems, and home-audio equipment, while the 20-pin SSOP package supports conventional surface-mount assembly.
System partitioning is especially important for this converter. Digital audio data enters through the serial interface, while the analog section reconstructs left- and right-channel signals at the converter output. Correct synchronization between the audio processor and the DAC is essential for preventing clicks, repeated samples, or channel misalignment. Power, ground, and analog-output routing must be arranged to minimize noise coupling into the reconstructed waveform.
Typical uses include digital active speakers, compact stereo amplifiers, USB audio equipment, portable audio products, and embedded playback systems. The 192 kHz capability makes the device appropriate for high-resolution audio paths, while the integrated volume control simplifies signal-chain design. The same device can support headphone, line-level, or other analog stages when its output configuration and external network are matched to the intended load.
The primary design trade-off is integration versus implementation flexibility. Integrated volume control reduces external circuitry and helps simplify control software, but an adjustable external analog amplifier may provide wider gain control or additional filtering. Before finalizing the layout, consult the manufacturer datasheet for the exact output-mode pins, recommended capacitors, supported clocking arrangements, and analog output configuration.
This product summary consolidates the exact resolution, sample-rate, interface, channel, packaging, and volume-control characteristics into an engineering-focused selection guide. It also distinguishes the WM8728SEDS/V from the identified WM8728SEDS-RV option and provides design notes covering clocking, grounding, filtering, output loading, and thermal verification for dependable stereo audio implementation.
直接替換替代品，適用於 WM8728SEDS/V — 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。
WM8728SEDS-RV
✅ 直接替換📋 參考替代品（不在目錄中）
WM8728SEDS/V 最大額定值與電氣特性
| Product Type | Stereo digital-to-analog converter |
| 解析度 | 24 bit |
| Maximum Sample Rate | 192 kHz |
| Channel Count | 2 channels |
| Digital Audio Interface | I2S |
| Volume Control | Integrated |
| 封裝 | 20-pin SSOP |
| 安裝類型 | Surface mount |
| Digital Input Format | I2S-compatible digital audio |
| Maximum Sampling Frequency | 192 kHz |
| Converter Architecture | Stereo DAC |
| Output Gain Control | Integrated volume control |
WM8728SEDS/V 20-pin ssop 腳位配置指南
WM8728SEDS/V（20-pin ssop 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： WM8728SEDS/V.
請參閱 資料表 以查看完整腳位配置。
典型應用
WM8728SEDS/V 適用於 6 應用s: High-Resolution USB Audio, Digital Active Speakers, Portable Audio Systems, Digital Stereo Amplifier, Home Audio Network Player, Embedded Audio Interface.
High-Resolution USB Audio
The WM8728SEDS/V fits a USB audio player that needs a dedicated stereo reconstruction stage. Its I2S-compatible interface can receive PCM audio from a USB controller, while the 24-bit, 192 kHz capability supports high-resolution playback. The host processor and converter must use compatible clock ratios and synchronized frame timing. Analog filtering and output loading should be designed for the intended line or headphone stage, because the converter package alone does not determine the final output impedance.
Digital Active Speakers
The WM8728SEDS/V is suitable for a compact active speaker in which a digital audio processor feeds a stereo DAC before amplification. The two-channel converter supports independent left and right reconstruction, while integrated volume control can simplify the initial signal chain. Place the converter close to the output amplifier when possible to minimize sensitive analog routing. The design must also account for the amplifier input range, ground references, and the output-filter network recommended by the manufacturer.
Portable Audio Systems
A portable media product can use the WM8728SEDS/V to convert I2S audio from a digital signal processor into analog stereo signals. The 20-pin SSOP package offers a manageable surface-mount option for space-constrained designs, and the integrated volume control reduces the need for separate attenuation hardware. Battery-powered operation makes power efficiency and analog shutdown behavior important checks. The final product should verify the supported supply range and confirm whether the required output mode is available in the selected configuration.
Digital Stereo Amplifier
The WM8728SEDS/V can precede a stereo power-amplifier stage in a digital audio system. Its 24-bit conversion and operation up to 192 kHz support high-resolution signal paths, while the I2S interface permits direct connection to a digital audio engine. The analog output network and grounding scheme determine channel balance and noise performance, so prototype the complete path rather than evaluating only converter output. Confirm that the downstream amplifier accepts the converter's voltage range and output topology.
Home Audio Network Player
A network audio player can use the WM8728SEDS/V as the local stereo DAC when its network or application processor outputs I2S audio. The converter supports 24-bit data at rates up to 192 kHz, enabling high-resolution playback from local or network sources. The system designer should define the master-clock architecture, ensure stable synchronization under network activity, and reserve a quiet analog output region on the PCB. Integrated volume control can complement, rather than replace, an application-level volume policy.
Embedded Audio Interface
The WM8728SEDS/V is appropriate for an embedded audio interface that converts synchronized digital samples into stereo analog outputs. Its stereo architecture reduces the need for separate single-channel converters, and the compact 20-pin SSOP package simplifies routing on a mixed-signal board. Timing margins, output settling, and channel synchronization must be verified with the selected processor and external clock source. The final schematic and PCB should follow the manufacturer reference application and pin-description sections exactly.
工程參考資料，適用於 WM8728SEDS/V — 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 | WM8728SEDS-RV |
|---|---|---|
| Product Type | Stereo DAC | Stereo DAC |
| Brand | Cirrus Logic | Cirrus Logic |
| Package | 20-pin SSOP | 20-pin SSOP |
| Resolution | 24 bit | 24 bit |
| Maximum Sample Rate | 192 kHz | 192 kHz |
| Channel Count | 2 channels | 2 channels |
| Volume Control | Integrated | Integrated |
主要差異化特點
- Matches the identified closest candidate in core converter capability (對比WM8728SEDS-RV)
- Provides integrated volume control for a simplified audio signal chain (對比WM8728SEDS-RV)
- Targets a compact stereo conversion function with I2S connectivity (對比WM8728SEDS-RV)
設計說明
Do not treat the 20-pin SSOP designation as proof of SOIC footprint compatibility. Check the package drawing for lead pitch, body width, span, and seating-plane details before transferring the layout to an existing board. Also verify every suffix-specific pin function and thermal-pad requirement against the manufacturer datasheet, since ordering codes can differ in temperature grade or production handling.
Route the digital audio interface away from the analog outputs and keep clock and data traces short. Use a continuous ground reference beneath and around the converter, connect analog and digital returns according to the manufacturer application circuit, and place filtering capacitors close to their associated pins. This separation reduces the chance that switching current from the digital or power sections will modulate the reconstructed analog output.
Establish the master-clock and frame-synchronization architecture before assigning I2S connections. The digital source, DAC, and any intermediate bus must agree on polarity, bit alignment, and frame format. During bring-up, probe the clock relationship and both digital channels, then listen or measure for clicks, intermittent mute states, and left-right channel swapping before tuning the analog output stage.
Decouple the converter supply at the package with the capacitor type and value recommended by the manufacturer datasheet. Keep the supply return path low-impedance and avoid routing high-current output or amplifier currents through the sensitive analog ground area. Because the target's supply-voltage range and absolute maximum ratings are not stated on this page, verify both in the manufacturer document before finalizing the power architecture.
The digital interface is only one part of the design. Confirm the supported analog output mode, external resistor and capacitor values, allowable output load, and whether the integrated volume control interacts with downstream gain settings. These details determine whether the converter can drive the selected headphone, line-level, or amplifier input without clipping, instability, or unintended channel imbalance.
合規資訊
No explicit compliance declarations were identified for the WM8728SEDS/V ordering code. Confirm RoHS, REACH, lead-free, halogen-free, conflict-minerals, and automotive qualification status for the exact production variant before release.
