WM8788GEDT/R - 24-Bit Stereo ADC | Cirrus Logic
部品番号: WM8788GEDT/R ✓ 生産中WM8788GEDT/R 概要
An ADC is a data-acquisition and signal-conversion IC that transforms continuously varying analog voltages into digital values for processing or transmission. In the audio hierarchy, the WM8788GEDT/R belongs to the high-performance stereo ADC class, combines an analog signal chain with digital data conversion, and ultimately operates as a mixed-signal semiconductor. Its stereo architecture makes it suitable for systems requiring simultaneous conversion of left and right audio channels.
The primary features are 24-bit resolution, a maximum conversion rate of 192 kHz, two analog inputs, and an I2S digital audio output. External resistors configure the analog inputs for a 1 Vrms line-level signal or for higher input levels. This allows the same converter to be used in different source-impedance and signal-amplitude conditions when the board-level resistor network is selected appropriately.
The device supports separate analog and digital supply domains, providing flexible rail partitioning when analog and digital subsystems require different voltage levels. Its 16-TSSOP package supports compact, surface-mount PCB construction, while the listed operating-temperature range of -40°C to +85°C covers industrial-temperature commercial equipment. The manufacturer lists the part as active.
Typical applications include LCD television audio paths, DVD players, Blu-ray Disc equipment, set-top boxes, and other consumer systems that convert stereo analog audio into a digital format. Its 192 kHz capability also supports high-resolution audio conversion where the source, clocking, and downstream signal chain support the corresponding sample rate.
Designers should treat the analog input network, supply sequencing, clocking, and digital-interface implementation as one signal-chain design. Place input and supply decoupling close to the device, keep analog and digital return currents separated, and verify every digital-audio timing condition against the manufacturer datasheet before releasing the PCB.
This page combines the product specifications, sourcing guidance, practical application guidance, package information, and a verified comparison of related audio-conversion options. It is intended to help engineers select the correct converter and plan a reliable implementation without overlooking package, interface, or analog-front-end constraints.
ドロップイン代替品: WM8788GEDT/R — 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。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストWM8788GEDT/R 最大定格＆電気的特性
| ADC Resolution | 24 bit |
| Maximum Sampling Rate | 192 kHz |
| Channel Count | 2 channels |
| Input Configuration | Stereo analog inputs |
| Digital Audio Interface | I2S |
| Line-Level Input Configuration | 1 Vrms |
| Supply Architecture | Separate analog and digital supplies |
| 動作温度範囲 | -40°C to +85°C |
| パッケージ | 16-TSSOP |
| Package Width | 4.40 mm |
| 実装タイプ | Surface Mount (SMD) |
| Packaging | Reel (TR) |
| ライフサイクル状態 | Active |
| Product Category | Data Conversion - ADC |
| Digital Output Format | 24-bit stereo I2S data |
WM8788GEDT/R 4.40 mm ピン配置ガイド
WM8788GEDT/R (4.40 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: WM8788GEDT/R.
詳細は データシート をご参照ください。
主な用途
WM8788GEDT/R の用途: 6 件s: LCD Television Audio Conversion, DVD and Blu-Ray Player Audio Inputs, Set-Top Box Audio Path, High-Resolution Stereo Line Input, Consumer Audio Receiver Front End, Digital Audio Interface Source Module.
LCD Television Audio Conversion
The WM8788GEDT/R fits an LCD television that must convert left and right analog audio into a digital stream for a downstream audio processor. Its 24-bit stereo conversion, I2S interface, and operation up to 192 kHz support high-resolution television audio paths. The external input resistors can establish a 1 Vrms line-level condition or another suitable signal range. Keep the analog input traces short, place the input network close to the converter, and separate analog ground currents from switching and digital return paths. The television power architecture must provide compatible analog and digital supplies, while the audio receiver must accept the selected I2S format and clock relationship.
おすすめ
DVD and Blu-Ray Player Audio Inputs
The WM8788GEDT/R is appropriate for the analog-to-digital stage of DVD and Blu-ray equipment that accepts stereo line-level audio and feeds a digital decoder or amplifier. Its two analog inputs support left and right channel conversion, while the 24-bit, 192 kHz capability accommodates high-rate digital audio processing. Configure the external resistor network for the actual source amplitude rather than assuming every consumer source presents 1 Vrms. Maintain a low-impedance return to the converter, decouple both analog and digital supply rails, and place the clock source close enough to avoid timing degradation. Verify master-clock and I2S timing with the downstream digital-audio processor.
おすすめ
Set-Top Box Audio Path
The WM8788GEDT/R supports a set-top-box design that accepts analog stereo audio from an external source and converts it into 24-bit digital audio for processing. The 16-TSSOP package is suitable for compact, surface-mount consumer equipment, while the I2S output supports integration with a digital audio decoder or receiver. Set the analog input scale for the external source using the manufacturer's resistor configuration, and verify that the source impedance does not create gain errors or channel imbalance. Supply filtering and grounding are especially important because set-top boxes often combine switching converters, tuner sections, and digital processors on the same board.
おすすめ
High-Resolution Stereo Line Input
The WM8788GEDT/R is suited to a high-resolution stereo line-input module that must preserve 24-bit sample data while supporting conversion rates up to 192 kHz. External resistors configure the input path for 1 Vrms or higher signal levels, allowing the board to support different source amplitudes. A careful analog layout reduces sensitivity to ground movement and coupling from surrounding digital circuitry. Keep the input resistors close to their associated pins, provide local bypass capacitors on the supply rails, and use a continuous return plane where practical. Confirm the supported clock and master-clock ratios against the manufacturer timing requirements before selecting all digital interface modes.
おすすめ
Consumer Audio Receiver Front End
The WM8788GEDT/R can form the conversion stage of a consumer audio receiver that accepts stereo analog inputs and sends 24-bit digital audio to a DSP, DAC, or surround processor. Its dual-channel architecture avoids separate converters for the left and right paths, and the I2S interface provides a straightforward connection to digital audio logic. The external input network should be selected for the receiver's nominal line level, including the specified 1 Vrms configuration when appropriate. Maintain symmetry between the two channels to prevent level imbalance, and place analog and digital supply decoupling near their respective supply pins. Validate interface timing with the actual receiver processor.
おすすめ
Digital Audio Interface Source Module
The WM8788GEDT/R can serve in a modular digital-audio source that accepts two analog channels and supplies 24-bit stereo data over I2S. Its 192 kHz maximum rate supports high-resolution operation when the module's clock source and downstream converter support that rate. The compact 16-TSSOP package leaves room for connectors, regulators, and isolation or filtering components on a mixed-signal board. Treat the analog input network, clock distribution, and I2S routing as separate domains with controlled return paths. Check the datasheet's master-clock and interface timing requirements during schematic review, especially when the module uses a remote audio processor or a long digital interconnect.
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: WM8788GEDT/R — 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 | PCM1808PW | PCM1725DR | WM8725CGED/R |
|---|---|---|---|---|
| Brand | Cirrus Logic | Texas Instruments | Texas Instruments | Cirrus Logic |
主な差別化要因
- Provides a defined 24-bit stereo conversion specification （vs PCM1808PW)
- Supports high-rate digital audio conversion （vs PCM1725DR)
- Uses a compact 16-TSSOP surface-mount package （vs WM8725CGED/R)
設計ノート
Route the two analog input nets as short, matched paths and place the external input resistors close to the converter. Keep the analog return current within the analog signal region rather than allowing it to return through digital switching-current paths. Follow the manufacturer input-conditioning and layout diagrams for the selected 1 Vrms or higher-level configuration, and maintain equivalent impedance and resistance on the left and right channels.
Use the manufacturer timing requirements to select the master-clock and system-clock relationship for every intended sample rate. The I2S data lines must be routed with continuous return references, and their length should be minimized where the downstream device does not provide input compensation. Verify data alignment, bit-clock polarity, and left/right channel timing with the complete clocking arrangement rather than testing only with one nominal frequency.
Provide separate analog and digital supply paths with local high-frequency bypass capacitors placed close to their associated pins. Check component values against the manufacturer decoupling recommendations for the actual clock and operating modes. Keep converter and switching-regulator loops compact so that supply ripple does not couple into the stereo input nodes, and verify the analog supply range, digital supply range, startup sequence, and power behavior before final schematic release.
コンプライアンス情報
The product information identifies an active consumer audio ADC but does not establish RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status for the exact ordering code. Automotive qualification is not inferred from the stated operating-temperature range.
