WM8738CGED/R - 24-Bit Stereo ADC, 96kHz, 14-SOIC | Cirrus Logic
MPN： WM8738CGED/R ✗ 停產WM8738CGED/R 概覽
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.
直接替換替代品，適用於 WM8738CGED/R — 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。
此系列的變體
與下列產品可直接替換的同系列型號： WM8738CGED/R （相同外形與佔位） — 差異在於 Manufacturer, Package.
此產品無可直接替換的替代品。
申請替代品WM8738CGED/R 最大額定值與電氣特性
| 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 |
| 封裝 | 14-pin SOIC |
| 安裝類型 | Surface mount |
| RoHS 狀態 | unknown |
| REACH Status | unknown |
| 生命週期狀態 | Obsolete |
WM8738CGED/R 14-pin soic 腳位配置指南
WM8738CGED/R（14-pin soic 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： WM8738CGED/R.
請參閱 資料表 以查看完整腳位配置。
典型應用
WM8738CGED/R 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 WM8738CGED/R — 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 |
|---|---|
| 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 |
主要差異化特點
- Integrated 24-bit stereo conversion at up to 96 kHz (對比WM8731SEDS/RV)
- Direct I2S digital-audio connection (對比WM8731SEDS/RV)
- Compact integrated audio conversion (對比WM8731SEDS/RV)
設計說明
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.
合規資訊
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.