NAU8822LYG - 24-bit Stereo Audio Codec | Nuvoton | QFN-32
MPN： NAU8822LYG ✓ 啟用中NAU8822LYG 概覽
An audio codec (coder-decoder) is a mixed-signal integrated circuit that converts analog audio signals to digital data and digital audio data back to analog. Within the system hierarchy, a codec sits between analog transducers such as microphones, headphones, and speakers, and a digital processing host such as an application processor, microcontroller, or FPGA. Codecs combine ADCs, DACs, microphone preamplifiers, headphone amplifiers, mixers, and volume controls in one silicon solution, making them the core building block of any embedded audio subsystem.
Key features of the NAU8822LYG include precision 24-bit stereo ADC and DAC channels for high dynamic-range record and playback, an integrated speaker driver that can drive a speaker directly without an external amplifier, and a standard I2S/PCM digital audio interface for glueless connection to mainstream processors. A broad range of integrated functions - mixing, gain staging, and input/output routing - simplifies implementation of complete audio system solutions on a single chip.
Architecturally, the NAU8822L family is designed as a complete audio subsystem: low-power analog front ends feed the sigma-delta converters, while flexible digital mixing and volume control operate on the audio bus side. This integration reduces component count, board area, and analog design effort compared with discrete codec-plus-amplifier chains.
Typical applications include portable audio players and recorders, smartphone and tablet headset audio, hands-free speakerphone systems using the built-in speaker driver, and general-purpose embedded audio in industrial equipment. The low-power design targets battery-operated products where every milliamp matters.
Design consideration: provide a clean analog supply and follow the manufacturer layout guidance for ground separation between analog and digital sections to preserve the 24-bit converters' noise performance.
This page synthesizes distributor pricing (LCSC from $2.0171 as of 2026-10-11), package and interface data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 NAU8822LYG — 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。
NAU8822YG
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
NAU8822LYG TR
✅ 直接替換📋 參考替代品（不在目錄中）
NAU8822LYG 規格
| Product Type | 24-bit Stereo Audio Codec with Speaker Driver |
| 解析度 | 24-bit |
| Audio Interface | I2S, PCM |
| Converter Channels | Stereo ADC + Stereo DAC |
| Speaker Driver | Integrated |
| 封裝 | 32-QFN (5x5 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C |
| Supply Type | Analog and digital supplies |
NAU8822LYG 32-qfn (5x5 mm) 腳位配置指南
NAU8822LYG（32-qfn (5x5 mm) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： NAU8822LYG.
請參閱 資料表 以查看完整腳位配置。
典型應用
NAU8822LYG 適用於 6 應用s: Portable Audio Players and Recorders, Hands-Free Speakerphone Systems, Smart Home and IoT Voice Devices, Smartphone and Tablet Audio Subsystems, Industrial and Test Equipment Audio, Automotive-adjacent Communication Terminals.
Portable Audio Players and Recorders
The NAU8822LYG fits portable players and recorders because its precision 24-bit stereo ADC and DAC preserve dynamic range in both playback and recording paths, while the low-power design extends battery runtime - exactly the combination Nuvoton targets in the datasheet description (Rev 1.9). In a typical player, the host processor streams I2S data to the codec DAC, whose output drives headphones or the integrated speaker driver directly, eliminating an external amplifier and saving board area in the 5x5 mm QFN footprint. For recorders, the microphone preamplifiers and ADC capture voice or music at 24-bit resolution. Place 100 nF decoupling on each supply pin and route analog inputs away from the I2S clock lines to protect the converter noise floor from digital crosstalk.
推薦
Hands-Free Speakerphone Systems
Hands-free speakerphone products benefit directly from the NAU8822LYG's integrated speaker driver, which drives a small loudspeaker without an external power amplifier - the key integration step highlighted in the NAU8822L datasheet (Rev 1.9, 97 pages). The stereo ADC digitizes the electret or MEMS microphone after its internal preamplifier, the I2S/PCM interface exchanges audio with a Bluetooth or VoIP baseband, and the DAC path returns far-end audio through the speaker driver. Operating from -40C to +85C, the part also suits industrial intercom endpoints. Design consideration: size the speaker load within the driver's rated impedance and keep the speaker return path away from the microphone ground to prevent acoustic-to-electrical feedback loops that degrade echo cancellation.
推薦
Smart Home and IoT Voice Devices
Smart speakers, doorbells, and voice-assistant nodes use the NAU8822LYG as a compact, low-power audio front end: the 24-bit ADC captures the wake-word microphone signal with sufficient resolution for far-field voice processing, and the I2S interface feeds the host SoC or DSP running the recognition engine. The integrated speaker driver supplies prompt and notification playback from the DAC path, so one 5x5 mm QFN-32 replaces a codec-plus-amplifier pair, cutting BOM cost toward the roughly $2 (as of 2026-10-11) unit price. Because voice nodes idle most of the time, the codec's low-power design matters more than peak throughput. Layout tip: separate analog ground for the microphone bias and ADC section from the digital ground plane to keep converter noise low in noisy wireless products.
推薦
Smartphone and Tablet Audio Subsystems
Mobile handsets and tablets embed a codec exactly like the NAU8822LYG between the application processor and the audio transducers. The 24-bit stereo converters handle high-quality media playback over headphones, the ADC path serves voice calls and voice recording, and the speaker driver covers loudspeaker ringtones and speakerphone mode - all within the 5x5 mm QFN that conserves the tight board space of a handset. The I2S/PCM interface connects gluelessly to mainstream application processors, and control registers configure input mixing and gains per use case, per the NAU8822L register map in the Rev 1.9 datasheet. The -40C to +85C operating range covers typical mobile environmental requirements. Designers should sequence the codec supplies with the platform power tree and mute the speaker path during jack-detect events to avoid audible pops.
推薦
Industrial and Test Equipment Audio
Industrial panels, alarms, and bench instruments need audible indication and sometimes voice prompts, and the NAU8822LYG covers both roles from one chip: the speaker driver emits alarms and prompts directly, while the 24-bit ADC records acoustic events for diagnostics or operator annotation. The -40C to +85C temperature rating suits factory-floor enclosures, and the general-purpose codec architecture described in the NAU8822L datasheet (Rev 1.9) lets a single MCU with I2S add full audio capability. Compared with a piezo buzzer solution, this path yields intelligible voice alerts and adjustable levels. For EMC robustness, keep the I2S bus short, add series termination on the bit clock if traces exceed a few centimeters, and place the codec's analog section away from switching-regulator components to preserve converter linearity.
推薦
Automotive-adjacent Communication Terminals
Fleet terminals, toll devices, and telematics speaker-microphone units operate across wide temperature ranges and benefit from the NAU8822LYG's -40C to +85C rating and self-contained audio subsystem. The 24-bit ADC captures the driver's voice for hands-free calling through a cellular modem's PCM interface - the codec's PCM mode maps directly onto modem audio ports - while the speaker driver reproduces far-end audio without external amplification. At approximately $2 per unit (LCSC, as of 2026-10-11), the codec meets tight telematics BOM budgets. Note that this part is not AEC-Q100 qualified per available data, so for in-cabin safety-critical placements verify qualification requirements with Nuvoton; the device best suits non-safety terminal and telematics accessory roles. Use star-grounding for the analog section to resist vehicle electrical noise.
推薦
推薦產品摘要
工程參考資料，適用於 NAU8822LYG — 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 | NAU8822YG | NAU8822LYG TR |
|---|---|---|---|
| Package | 32-QFN (5x5 mm) | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same |
| Brand | Nuvoton Technology | Nuvoton Technology | Nuvoton Technology |
| Resolution | 24-bit | 24-bit | 24-bit |
| Audio Interface | I2S, PCM | I2S, PCM | I2S, PCM |
| Speaker Driver | Integrated | Integrated | Integrated |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C |
主要差異化特點
- Integrated speaker driver removes external audio amplifier (對比Codec-only solutions (e.g., UDA1341TS/N1))
- 24-bit converters with I2S/PCM glueless interface (對比NAU8822YG (same family))
- Cost and integration trade-off (對比Higher-end DSP-codec competitors)
設計說明
Provide separate, well-decoupled analog and digital supplies for the NAU8822LYG. Fit 100 nF ceramic capacitors at every supply pin, placed within 2 mm of the QFN pads, plus bulk 10 uF capacitance per rail. Sharing a noisy digital rail directly with the analog supply will lift the 24-bit converter noise floor; if only one rail exists, use an RC or ferrite filter for the analog pins. Consult the power consumption tables in the 97-page NAU8822L datasheet (Rev 1.9) for per-mode current budgets before sizing the power tree.
For the 32-QFN (5x5 mm) land pattern, follow the Nuvoton footprint drawing in the datasheet and solder the exposed die pad to a grounded PCB pad array with thermal vias. Route I2S/PCM clock and data traces short and away from microphone inputs; a 3W rule between audio analog traces and digital clock lines prevents crosstalk raising the ADC noise floor. Star-ground the analog section: connect analog ground, headphone/speaker return, and microphone ground at one point near the codec rather than daisy-chaining returns through the digital plane.
Configure input routing and gain registers carefully at startup - the NAU8822L family offers extensive mixing options, and incorrect default register states commonly cause silent outputs or distorted recording. Mute the speaker driver during power-up, power-down, and jack events to eliminate audible pops. When second-sourcing within the NAU8822L ordering family, verify the exact suffix against the datasheet ordering table rather than assuming suffix equivalence. Source only from authorized distributors; counterfeit NAU8822L parts have been reported on open marketplaces and compromise audio quality.
合規資訊
The provided web data does not state RoHS/REACH/lead-free status explicitly for NAU8822LYG; verify on the Nuvoton product page or DigiKey compliance tab. No AEC-Q100 qualification is claimed in the available data - treat as not automotive-qualified.
