NAU8822LYG - 24-bit Stereo Audio Codec | Nuvoton | QFN-32
部品番号: NAU8822LYG ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $2.36 | $2.36 |
| 10 | $2.24 | $22.40 |
| 100 | $2.12 | $212.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $2.02 | $2,020.00 |
NAU8822LYG 概要
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.
ドロップイン代替品: NAU8822LYG — 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。
クイック比較ツール — 並列比較する代替部品を選択:
NAU8822YG
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
NAU8822LYG TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
NAU8822LYG 仕様
| Product Type | 24-bit Stereo Audio Codec with Speaker Driver |
| 分解能 | 24-bit |
| Audio Interface | I2S, PCM |
| Converter Channels | Stereo ADC + Stereo DAC |
| Speaker Driver | Integrated |
| パッケージ | 32-QFN (5x5 mm) |
| 実装タイプ | Surface Mount |
| 動作温度 | -40C to +85C |
| Supply Type | Analog and digital supplies |
NAU8822LYG 32-qfn (5x5 mm) ピン配置ガイド
NAU8822LYG (32-qfn (5x5 mm) パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: NAU8822LYG.
詳細は データシート をご参照ください。
主な用途
NAU8822LYG の用途: 6 件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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
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: NAU8822LYG — 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 | 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 |
主な差別化要因
- Integrated speaker driver removes external audio amplifier （vs Codec-only solutions (e.g., UDA1341TS/N1))
- 24-bit converters with I2S/PCM glueless interface （vs NAU8822YG (same family))
- Cost and integration trade-off （vs Higher-end DSP-codec competitors)
設計ノート
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.
コンプライアンス情報
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.
