WM8738CGED/R - 24-Bit Stereo ADC, 96kHz, 14-SOIC | Cirrus Logic
部品番号: WM8738CGED/R ✗ 生産終了WM8738CGED/R 概要
An ADC is a data-conversion IC that converts continuous analog voltage signals into digital samples. Within the broader semiconductor hierarchy, the WM8738CGED/R belongs to the analog-to-digital converter and audio codec product class, with an I2S digital output that connects to a digital signal processor, audio processor, or other digital audio controller. Its stereo architecture permits simultaneous or coordinated conversion of two audio channels rather than requiring a separate converter for each channel.
The principal documented specifications are a 24-bit conversion resolution, a 96 kHz maximum sampling rate, stereo operation, I2S connectivity, low-power operation, and a 14-SOIC package. These characteristics make the converter suitable for digital recording, playback, voice processing, audio capture, and communication equipment. The I2S interface reduces the number of external digital signal lines needed to transfer converted audio data into a host processor.
The WM8738CGED/R can be used as the analog front end of a compact stereo audio subsystem. Its multiple digital inputs and outputs support digital-audio signal routing, while integrated mixer, filter, gain, and analog input functions can reduce the need for separate support circuitry. Designers should confirm the required input impedance, clock configuration, codec routing, and system-level channel mapping in the manufacturer datasheet before finalizing the PCB.
Typical applications include consumer audio equipment, portable and connected audio products, voice-recording systems, communication terminals, and embedded multimedia platforms. The 14-pin SOIC package is mechanically straightforward for conventional surface-mount assembly, although the analog and digital sections still require careful grounding and decoupling to limit noise coupling.
When designing around this converter, prioritize a clean analog supply, short return paths, and separate routing of sensitive audio inputs away from switching nodes and digital clock lines. Confirm the supported input configuration, master or slave clock mode, data format, and required external components against the manufacturer datasheet and reference circuit before production release.
This page combines the exact part identification, package information, converter specifications, practical integration guidance, sourcing workflow, and compatibility analysis. It also distinguishes confirmed technical facts from parameters that must be checked directly in the manufacturer datasheet, helping engineers plan a sound evaluation rather than relying on an abbreviated distributor listing.
ドロップイン代替品: WM8738CGED/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: WM8738CGED/R （同一形状・フットプリント） — 相違点: Manufacturer, Package.
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WM8738CGED/R 最大定格＆電気的特性
| Manufacturer | Cirrus Logic Inc. |
| Product Type | 24-bit stereo audio analog-to-digital converter |
| Converter Resolution | 24 bit |
| Maximum Sampling Rate | 96 kHz |
| Channel Configuration | Stereo |
| Digital Audio Interface | I2S |
| Power Class | Low power |
| Supply Voltage Range | 3 V to 5.5 V |
| パッケージ | 14-pin SOIC |
| 実装タイプ | Surface mount |
| RoHS ステータス | unknown |
| REACH Status | unknown |
| ライフサイクル状態 | Obsolete |
WM8738CGED/R 14-pin soic ピン配置ガイド
WM8738CGED/R (14-pin soic 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: WM8738CGED/R.
詳細は データシート をご参照ください。
主な用途
WM8738CGED/R の用途: 6 件s: Stereo Audio Capture, Voice and Communication Terminals, Digital Recording Equipment, Consumer Audio Equipment, Embedded Multimedia Platforms, Audio Test and Measurement.
Stereo Audio Capture
The WM8738CGED/R fits a stereo capture front end when the host requires 24-bit conversion at rates up to 96 kHz. Its two-channel structure reduces the need for separate ADC devices, while the I2S output transfers converted data to a DSP or embedded audio controller. The 3 V to 5.5 V supply range accommodates common embedded rails. Designers should confirm the supported analog input configuration, input drive level, master-clock requirements, and reference schematic before selecting external coupling and anti-aliasing components.
おすすめ
Voice and Communication Terminals
The WM8738CGED/R is suitable for voice terminals, intercom systems, and communication equipment requiring a compact stereo or dual-channel digital-audio input. Its 96 kHz maximum conversion rate provides headroom for high-quality capture, while the I2S interface can connect directly to a communications processor. Analog microphone or line-level conditioning remains essential; the converter parameters must be reviewed against the required source impedance, gain, sampling bandwidth, and clocking architecture before the PCB is released.
おすすめ
Digital Recording Equipment
A digital recorder can use the WM8738CGED/R to convert left and right analog audio inputs into I2S data for storage and monitoring. The 24-bit format and maximum 96 kHz rate support high-resolution capture workflows, while the integrated 14-pin SOIC implementation helps constrain board size. Validate the analog front-end gain, supported input routing, converter latency, clock stability, and required output word format against the recording architecture before production.
おすすめ
Consumer Audio Equipment
The WM8738CGED/R can serve as the audio conversion element in compact consumer equipment requiring stereo digital audio. Its low-power designation, integrated audio functions, and 14-pin SOIC package are useful when the system aims to minimize external component count. For a finished product, verify startup behavior, analog mute requirements, digital volume routing, clock interoperability with the system controller, and de-click implementation using the manufacturer reference design.
おすすめ
Embedded Multimedia Platforms
The WM8738CGED/R suits embedded systems that need a local analog-audio input path alongside an I2S-capable host processor. Its 3 V to 5.5 V operating range supports integration with common embedded supply rails, and the 96 kHz rate provides flexibility for multimedia capture. System designers should budget the converter's digital interface pins, route I2S away from sensitive analog inputs, and verify whether the required codec routing or mixer functions must be configured through the manufacturer's control interface.
おすすめ
Audio Test and Measurement
The WM8738CGED/R can provide the stereo ADC stage in compact audio test equipment that converts a pair of analog inputs into I2S data for analysis. The 24-bit resolution and maximum 96 kHz rate suit high-resolution signal acquisition, while the low-power, 14-SOIC implementation simplifies repeatable board construction. Instrument designers should account for input coupling, gain calibration, grounding, and digital-clock jitter, and should confirm the converter's input bandwidth and accuracy characteristics before making metrology claims.
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: WM8738CGED/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 |
|---|---|
| Brand | Cirrus Logic Inc. |
| Package | 14-pin SOIC |
| Product Type | 24-bit stereo audio ADC |
| Converter Resolution | 24 bit |
| Maximum Sampling Rate | 96 kHz |
| Channel Configuration | Stereo |
| Digital Audio Interface | I2S |
| Supply Voltage Range | 3 V to 5.5 V |
| Power Class | Low power |
| Lifecycle Status | Obsolete |
主な差別化要因
- Integrated 24-bit stereo conversion at up to 96 kHz （vs WM8731SEDS/RV)
- Direct I2S digital-audio connection （vs WM8731SEDS/RV)
- Compact integrated audio conversion （vs WM8731SEDS/RV)
設計ノート
Route the analog input nets as short, continuous traces away from I2S data, clock, and power-converter switching nodes. Keep the analog and digital return paths disciplined, provide a solid ground reference, and follow the pin-description table in the manufacturer datasheet when assigning the 14 package terminals. Because the complete terminal map is not published on this page, use the datasheet rather than inferring connections from a generic SOIC drawing.
Apply the manufacturer's recommended input, output, and bypass-capacitor configuration directly from the reference circuit. Place the closest decoupling capacitor at the relevant supply pin with a short ground return, and verify that the upstream 3 V to 5.5 V source can support startup and analog-load transients. Estimated: with a 5.0 V rail, 3.3 V output, and 100 mA analog load, the ideal regulator voltage drop is 1.7 V and the resulting dissipation is 0.17 W before converter-specific losses are included.
Check the supported analog source impedance, input bandwidth, gain settings, and anti-aliasing requirements before adding external coupling components. I2S data, bit clock, and master-clock traces should be routed over a continuous ground plane, kept away from sensitive analog inputs, and matched to the host interface's timing budget. Confirm clock direction and supported master or slave operation in the manufacturer datasheet to avoid incompatible clock sources.
Do not substitute a generic stereo ADC solely because it offers 24-bit resolution and a 96 kHz sample rate. Pin compatibility requires matching the I2S interface, analog input topology, clock architecture, control signals, supply pins, and package terminals. Also confirm the reel-oriented slash-R ordering code, minimum order quantity, and date-code requirements with the manufacturer ordering information before committing an obsolete part to a production build.
コンプライアンス情報
No target-part compliance declarations were present in the available manufacturer or distributor information. Obtain current RoHS, REACH, lead-free, halogen-free, and conflict-minerals documentation directly from Cirrus Logic before release.