WM1811GECS/R - 24-Bit Stereo Audio Codec | Cirrus Logic
料号： WM1811GECS/R ✗ 停产WM1811GECS/R 概述
An audio codec is an integrated circuit that converts between digital audio data and analog microphone or line-level signals. In the signal chain, a codec belongs to the audio interface IC family, which sits between audio transducers and the digital host processor. Sigma-delta converters are used inside the device to perform analog-to-digital and digital-to-analog conversion while shaping quantization noise away from the audible signal band.
The WM1811GECS/R supports 24-bit conversion through two ADC channels and two DAC channels. Its digital interfaces make it suitable for portable consumer equipment, personal audio products, and embedded systems that require bidirectional analog audio connectivity in a compact package. The three digital audio interfaces allow the system designer to route additional digital audio streams between the codec and a host or external audio device.
The 80-ball WCSP construction supports high-density assembly and short PCB interconnect paths, although its fine pitch demands careful stencil design, reflow-profile control, and inspection. Because an exposed acoustic and electrical environment surrounds the converter sections, layout must separate analog input, analog output, digital interface, and supply-return paths. Decoupling networks and controlled grounding are as important as the nominal 1.71 V to 2 V analog supply range.
Typical uses include stereo headphone and line-output stages, digital microphone systems, docking stations, portable media accessories, and audio interface modules. The compact package is especially useful when board area is constrained, while the multiple digital interfaces allow external high-performance converters to be added without changing the host-side firmware architecture.
Design conservatively around supply sequencing, analog signal levels, and interface format. Confirm the required I2C address, digital audio format, clock topology, and supported sample rates against the manufacturer datasheet before routing the PCB. Keep switching regulators and their high-current return paths away from the analog converter balls.
This page organizes the codec specifications, verified distributor listings, practical integration notes, and qualification of genuine drop-in alternatives. It also separates confirmed device attributes from parameters that require confirmation before schematic release, helping engineers shorten the path from component selection to a production-ready audio board.
直接替换替代料： WM1811GECS/R ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料WM1811GECS/R 最大额定值与电气特性
| 分辨率 | 24 bit |
| Number of ADCs | 2 |
| Number of DACs | 2 |
| Conversion Architecture | Sigma-delta |
| Analog Supply Voltage Range | 1.71 V to 2 V |
| Digital Audio Interfaces | 3 |
| Product Type | Stereo audio codec |
| Package Type | 80-ball WCSP |
| Package Dimensions | 4.16 mm x 3.88 mm |
| 安装类型 | Surface mount, wafer-level chip-scale package |
| 生命周期状态 | Not for new designs |
WM1811GECS/R 4.16 mm x 3.88 mm 引脚配置指南
WM1811GECS/R（4.16 mm x 3.88 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： WM1811GECS/R.
请参阅 数据手册 以查看完整引脚配置。
典型应用
WM1811GECS/R 适用于 6 应用s: Stereo Headphone Output Module, Digital Microphone Recording Front End, Portable Media Docking Station, Digital Instrument Audio Interface, Industrial Audio Control Panel, Multi-Interface Audio Hub.
Stereo Headphone Output Module
The WM1811GECS/R fits a compact stereo playback module because its two 24-bit DAC channels can generate left and right audio from a digital stream. The 4.16 mm by 3.88 mm 80-ball WCSP preserves board area in portable equipment, and its three digital audio interfaces provide options for connecting a host processor or an external digital-to-analog path. Designers should verify DAC sample-rate support, digital audio format, and output-reference levels against the manufacturer datasheet. An external headphone driver may be needed because the codec and current-limiting amplifier perform different functions. Route the analog outputs as a matched pair, keep them away from switching nodes, and use the recommended ground and decoupling arrangement.
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Digital Microphone Recording Front End
The WM1811GECS/R is appropriate for a recording front end that must convert one or two analog microphone signals into digital audio for a host. Its two ADC channels and 24-bit resolution support high-resolution capture, while the sigma-delta architecture places conversion noise away from the intended audio band. The compact 80-ball WCSP allows the codec to sit close to the microphone connector and its analog protection network. Engineers must confirm the supported converter rates, analog input range, reference-voltage requirements, and clock topology. Microphone biasing, phantom power, and ESD protection remain external functions, so the analog input paths need careful isolation from clocks and digital return currents.
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Portable Media Docking Station
The WM1811GECS/R is a strong fit for a portable media dock that accepts digital audio from a host and drives an analog output section. Its three digital audio interfaces give the board designer several potential host-to-codec routing options, while the two-DAC arrangement supplies a complete stereo playback path. The 4.16 mm by 3.88 mm package is valuable in a crowded dock enclosure, but its fine-pitch assembly demands stable manufacturing processes. Because the device is not for new designs, an existing platform based on this codec can use it for lifecycle support, while a new dock should compare current codec options. Verify clock synchronization, I2C addressing, and supply-startup behavior before layout release.
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Digital Instrument Audio Interface
The WM1811GECS/R can serve as the mixed-signal boundary in a digital musical instrument or audio interface. Two ADC channels support stereo input capture, two DAC channels support monitoring, and the multiple digital audio interfaces allow connection to a processor or specialized converter. The 24-bit resolution supports modern high-resolution audio workflows, although the actual useful bandwidth depends on the supported sample rates and analog filters. Place the codec near the input and output connectors to minimize analog trace exposure, and keep the digital interface region aligned with the host processor. Confirm master-clock requirements and supported digital formats before finalizing the host software and board interconnect.
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Industrial Audio Control Panel
The WM1811GECS/R can support an industrial audio panel that captures a stereo source and returns a monitored stereo output. Its two ADCs and two DACs provide symmetrical signal paths, and the compact 80-ball WCSP leaves room for isolation, protection, and power-conversion components around the codec. Industrial designs should verify the operating-temperature rating, clock jitter tolerance, analog noise performance, and long-term availability before committing the design. The not-for-new-designs status makes this device most appropriate for maintenance or continuation of an established platform. Use the recommended analog and digital partitioning, and protect connector-facing inputs with appropriately rated external components.
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Multi-Interface Audio Hub
The WM1811GECS/R suits an audio hub that must combine local analog conversion with several digital audio connections. Its three digital interfaces can support a host link and additional converter or routing paths, while the two ADCs and two DACs cover local analog capture and playback. This combination helps designers reduce the number of separate mixed-signal components in a compact peripheral. Integration still requires deliberate clock partitioning, separate analog and digital supply return planning, and short traces between the codec and external converters. Verify which interface modes can operate simultaneously and whether master or slave clocking is required for each connection. Confirm signal latency expectations against the host protocol before release.
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推荐产品汇总
工程参考数据： WM1811GECS/R ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Brand | Cirrus Logic Inc. |
| Package | 80-ball WCSP (4.16 mm x 3.88 mm) |
| Product Type | Stereo audio codec |
| Resolution | 24 bit |
| Number of ADCs | 2 |
| Number of DACs | 2 |
| Conversion Architecture | Sigma-delta |
| Digital Audio Interfaces | 3 |
| Analog Supply Voltage Range | 1.71 V to 2 V |
| Lifecycle Status | Not for new designs |
关键差异点
- Complete stereo conversion in a compact package （对比 Discrete ADC and DAC implementations)
- Multiple digital audio interface options （对比 Single-interface stereo codecs)
- High-resolution sigma-delta conversion （对比 Lower-resolution audio converters)
设计说明
Treat the analog converter region as a distinct layout zone. Place analog input and output bypass components directly beside their associated balls, keep switching-regulator loops and high-current output returns away from those components, and follow the acoustic-mechanical recommendations in the manufacturer datasheet. The three digital interfaces should connect to digital circuitry without crossing the analog section. Because this is an 80-ball WCSP, small placement errors can create open or bridged joints, so verify stencil apertures, board pad definitions, and assembly capability before production.
Design the power tree around the verified 1.71 V to 2 V analog supply range and the separate digital supply requirement. Confirm sequencing, voltage tolerances, and startup limits in the manufacturer electrical tables before assigning regulators. Place bulk and local decoupling capacitance at the supply balls using the values and placement shown in the recommended application circuit. Check analog rail ripple with an oscilloscope at the package, since converter performance can be undermined by supply noise even when the nominal voltage is correct.
External audio connectors, microphone inputs, and headphone outputs require protection against ESD and industrial transients. Use the connector-defined protection network and confirm that clamp devices do not distort the usable analog range. Keep analog traces short, avoid sharing return paths with digital output drivers, and use the supported clock architecture without adding long stubs. Host-side firmware must match the selected digital audio format, sample rate, and control-register configuration before the board is released for production.
合规信息
Compliance attributes are not stated in the manufacturer or distributor documentation available for this part. Confirm the current declarations directly with Cirrus Logic before using the component in a regulated or restricted-material program.
