NAU8811YG - 24-bit Mono Audio Codec with SPI | Nuvoton
Teilenummer: NAU8811YG ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $1.85 | $1,85 |
| 10 | $1.67 | $16,70 |
| 100 | $1.45 | $145,00 |
| 500 | $1.28 | $640,00 |
| 1.000 | $1.12 | $1.120,00 |
NAU8811YG Übersicht
An audio codec (coder-decoder) is a mixed-signal IC that converts analog audio signals to digital data and vice versa. In the system hierarchy, an audio codec sits between analog transducers (microphones, speakers, line outputs) and a digital processor such as a DSP or application MCU, providing the ADC path, DAC path, and an industry-standard digital audio bus such as I2S or PCM in a single power-management-friendly device.
Key features include an Automatic Level Control (ALC) with noise gate that keeps recorded voice levels consistent without host intervention, a programmable gain amplifier (PGA) on the record path, and a differential microphone input plus a single-ended auxiliary input that can sum multiple signals. Three amplification paths with total gain of up to support flexible signal conditioning. The digital audio interface supports both I2S and PCM with time-slot assignment, easing integration with cellular basebands and Bluetooth controllers.
Architecturally, the NAU8811 pairs robust sigma-delta conversion with an on-chip clocking scheme controlled over SPI, minimizing external component count. Its low-power design targets battery-operated voice terminals where every microamp matters. According to the Nuvoton NAU8811 datasheet (Rev 2.5), the device is explicitly designed for voice-telephony-related applications, with wideband performance suitable for modern voice codecs.
Typical applications include hands-free car kits, VoIP headsets and speakerphones, portable voice recorders, intercom systems, and cellular accessories where one differential mic input and one mono output are sufficient.
A key design consideration: because the AUX input is multipurpose and can be configured to sum multiple signals, careful gain staging across the PGA and ALC is required to avoid clipping on loud transients; set the ALC target level below the ADC full-scale range.
This page synthesizes distributor stock data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für NAU8811YG – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
NAU8811
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
NAU8810YG-TR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
NAU8811YG Technische Daten
| Product Type | Mono Audio Codec with SPI |
| ADC Channels | 1 |
| DAC Channels | 1 |
| Auflösung | 24 bit |
| Audio Interface | I2S, PCM with time slot assignment |
| Control Interface | SPI |
| Microphone Input | 1 differential (MIC+, MIC-) |
| Auxiliary Input | 1 single-ended (AUX), can sum multiple signals |
| ALC | Automatic Level Control with noise gate |
| PGA | Yes (record path programmable gain amplifier) |
| Gehäuse | 20-QFN (4x4 mm) with exposed pad |
| Montageart | Surface Mount |
| Amplification Paths | 3 (total gain per datasheet) |
NAU8811YG 20-qfn (4x4 mm) with exposed pad Pinbelegungsleitfaden
Pinbelegung für NAU8811YG (20-qfn (4x4 mm) with exposed pad-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für NAU8811YG.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
NAU8811YG ist geeignet für 6 Anwendungs: Hands-Free Car Kits, VoIP Speakerphones and Headsets, Portable Voice Recorders, Intercom and Door-Entry Systems, Cellular Accessories and Baseband Audio, Industrial Voice Annunciation and Alarm Panels.
Hands-Free Car Kits
The NAU8811YG fits hands-free car kits because its differential MIC+/MIC- input provides common-mode rejection against alternator whine and engine noise, while the on-chip ALC with noise gate keeps the driver's voice at a consistent level whether speaking from 20 cm or 80 cm away. The 24-bit I2S interface connects cleanly to a Bluetooth hands-free processor, and the PCM mode with time-slot assignment allows direct sharing of a baseband audio bus without glue logic. Placed between the electret microphone and the host processor, the codec digitizes voice with its PGA staged so the ALC target sits below ADC full scale, preventing clipping on loud speech. Because it is mono-only and low power, it adds no cost or quiescent drain for unused stereo channels in a battery-backed telematics unit.
Empfohlen
VoIP Speakerphones and Headsets
In VoIP speakerphones, the NAU8811YG's wideband mono codec captures and replays speech with 24-bit resolution, meeting the bandwidth expectations of modern wideband voice codecs such as those used in HD-Voice calls. The AUX single-ended input can be configured to sum multiple signals, allowing DTMF tones or alert audio to be mixed into the call path on-chip. The three amplification paths with programmable gain let designers drive both a receiver (earpiece) and a small loudspeaker from one codec with correct gain staging. Connected over I2S to a VoIP SoC and controlled via SPI registers, the device occupies a 4x4 mm footprint, leaving board area for the Ethernet or Wi-Fi section, while its low-power design suits PoE-powered conference endpoints with strict power budgets.
Empfohlen
Portable Voice Recorders
Battery-powered voice recorders benefit directly from the NAU8811YG's low-power, cost-effective design. The ALC with noise gate automatically compensates for varying speaker-to-microphone distances during dictation or meeting capture, eliminating the need for host-side gain algorithms that consume CPU cycles and battery life. The differential microphone input rejects noise from nearby digital circuitry such as flash controllers and displays, which is a common complaint in compact recorder layouts. The 24-bit ADC provides headroom for post-processing, speech-to-text front ends, and dynamic-range compression applied later in firmware. Designers should stage the PGA so the ALC target level sits comfortably below full scale, reserving margin for sudden loud inputs such as table taps or doors closing during note-taking.
Empfohlen
Intercom and Door-Entry Systems
Wired and IP intercom panels use the NAU8811YG as a complete single-channel voice front end. Its AUX input, configurable to sum multiple signals, lets designers combine the gooseneck microphone signal with a line-level announcement feed before digitization. The robust ADC and DAC architecture highlighted in the Nuvoton datasheet tolerates the electrically noisy environments typical of door-entry wiring runs, where hum and switching transients ride on long cables. PCM mode with time-slot assignment allows the intercom master controller to poll multiple codecs on one shared frame-synced bus, reducing wiring from panel stations. The exposed-pad 20-QFN (4x4 mm) package suits the compact form factors of video door stations, where remaining PCB area is dominated by the camera and network sections.
Empfohlen
Cellular Accessories and Baseband Audio
The NAU8811YG integrates naturally with cellular module audio sections because its PCM interface supports time-slot assignment, the format native to baseband chips. Designers can map the codec's transmit and receive slots into the baseband's frame so voice data flows without a dedicated I2S controller. The ALC ensures consistent uplink loudness across users of headset microphones with widely varying sensitivity, a documented pain point in accessory certification. One differential mic input and a mono output match the accessory form factor - a single-mic headset or car speakerphone - avoiding the cost of a stereo codec. SPI control allows the module's GPIO-expanded host to configure gain and power states at boot and toggle shutdown for regulatory standby current compliance.
Empfohlen
Industrial Voice Annunciation and Alarm Panels
Industrial alarm panels and machine annunciators use the NAU8811YG DAC path to render stored voice prompts and warning messages through a small speaker, while the ADC path optionally captures operator confirmation audio. The three amplification paths with programmable gain allow one codec to drive both a panel loudspeaker and a handset at independent levels. Robust ADC/DAC performance per the Nuvoton datasheet maintains intelligibility in electrically noisy cabinets containing relays and switch-mode supplies, especially when the differential mic input is used with shielded cabling. SPI register control integrates with the panel's existing microcontroller without adding an audio-specific processor. The 4x4 mm QFN footprint fits dense IO boards, and the exposed pad grounds through the chassis-connected pour, aiding EMC performance.
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Technische Referenzdaten für NAU8811YG – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | NAU8811 | NAU8810YG-TR |
|---|---|---|---|
| Package | 20-QFN (4x4 mm) EP | 20-QFN (4x4 mm) - same | 20-QFN (4x4 mm) - same |
| Brand | Nuvoton Technology | Nuvoton Technology | Nuvoton Technology |
| Codec Configuration | Mono (1 ADC / 1 DAC) | Mono (1 ADC / 1 DAC) | Mono |
Wichtigste Unterscheidungsmerkmale
- Integrated ALC with noise gate (vs. NAU8810YG-TR)
- Summing-capable auxiliary input (vs. NAU8810YG-TR)
- PCM time-slot assignment (vs. UDA1341TS/N1)
Designhinweise
Solder the NAU8811YG's exposed pad to a grounded copper pour with a 3x3 or 4x4 via array (0.3 mm vias filled or plugged per assembly capability) to establish a low-impedance ground reference for the analog section. Route the differential MIC+/MIC- pair as closely coupled, equal-length traces, and surround them with a guard ground trace. Keep SPI clock and data lines at least 2-3 trace widths away from microphone inputs; digital coupling into the high-gain PGA path is the dominant audible-noise mechanism observed in compact layouts.
Stage the record path so the ALC target level sits well below ADC full scale. Estimated: with a differential electret mic producing roughly 10-30 mVrms of speech, set PGA gain so typical speech lands around 50-60% of full scale, leaving the ALC 4-6 dB of upward headroom for distant talkers and 10 dB of downward margin for loud transients. Verify actual mic sensitivity against the datasheet gain tables before fixing resistor values - do not rely on typical numbers alone.
The AUX input is multipurpose and can be configured to sum multiple signals per the datasheet. A common mistake is leaving an unused AUX source AC-floating with high gain applied, which injects hum into the record path; terminate unused summed sources to ground through an appropriate impedance. Also confirm I2S vs PCM mode and time-slot assignment in SPI registers before first audio bring-up - mismatched slot configuration presents as silence or severely distorted audio that mimics hardware faults.
Compliance-Informationen
Compliance statuses were not stated in the provided verified web data; consult Nuvoton product pages or the distributor environmental datasheet for RoHS/REACH declarations.
