ADAU1979WBCPZ-RL - Quad 24-bit 192kHz Audio ADC, AEC-Q100 | ADI
Артикул: ADAU1979WBCPZ-RL ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $7.86 | $7,86 |
| 10 | $7.07 | $70,70 |
| 100 | $6.29 | $629,00 |
| 500 | $5.66 | $2.830,00 |
| 1.000 | $5.03 | $5.030,00 |
ADAU1979WBCPZ-RL Обзор
An audio ADC (analog-to-digital converter) is a precision mixed-signal IC that converts continuous-time analog audio signals into discrete digital sample streams for downstream DSP, mixing, or transmission. Within the broader signal-chain taxonomy, the ADAU1979 sits at the analog front-end boundary: audio ADC -> audio codec -> audio DSP -> amplifier, with this particular part optimized for high-performance multi-channel automotive audio capture.
The ADAU1979WBCPZ-RL supports sample rates from 8 kHz to 192 kHz and provides a selectable digital high-pass filter to remove DC offsets. Output data formats include right-justified, left-justified, I²S, and TDM, supporting both master and slave operation modes. An I²C/SPI-compatible control port allows a microcontroller to adjust volume, mute, PGA gain, and many other parameters via software, while a clickless software mute and autoramp function minimize audible pops during gain transitions.
Typical applications include automotive head-unit audio signal acquisition, active noise cancellation (ANC) microphone arrays, infotainment systems, and professional multi-channel audio interfaces. The wide 4.5 V rms input range (vs the more common 1-2 V rms) lets it accept line-level sources directly without external attenuation, simplifying the analog front-end BOM. AEC-Q100 qualification suits it to the harsh electrical and thermal environment of an automotive ECU.
When designing with this IC, decouple each AVDDx pin to its nearest AGNDx pin with a 100 nF ceramic capacitor placed as near the pin as possible, and provide at least one bulk aluminum electrolytic capacitor of ≥10 µF on the PCB. The internal PGA gain and digital volume controls can be cascaded for an effective gain range of more than 80 dB - design the gain plan to keep peak input below 4.5 V rms to avoid clipping.
This page synthesizes distributor pricing, AEC-Q100-qualified drop-in references, and practical decoupling guidance not consolidated in the manufacturer datasheet, giving engineers a single source of comparison.
Аналоги без доработки для ADAU1979WBCPZ-RL — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ADAU1979WBCPZ-RL (тот же форм-фактор и посадочное место) — отличается по Architecture, Control Interface, Digital Volume Control, Package.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ADAU1979WBCPZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADAU1979WBCPZ-R7
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADAU1977WBCPZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADAU1978WBCPZ
✅ Прямая замена✓ В наличии
$3.95 / шт.
Открыть даташит →ADAU1979WBCPZ-RL Максимальные параметры и электрические характеристики
| Product Type | Audio ADC (Quad Analog-to-Digital Converter) |
| Number of Channels | 4 |
| Разрешение | 24 bit |
| Sample Rate Range | 8 kHz to 192 kHz |
| Input Level | 4.5 V rms (ac-coupled, differential inputs) |
| Architecture | Multibit Sigma-Delta (Σ-Δ) with continuous-time front end |
| Control Interface | I²C / SPI |
| Digital Audio Output Formats | I²S, Left-Justified, TDM |
| Master/Slave Modes | Both supported |
| Digital Volume Control | Yes, with autoramp function |
| Clickless Mute | Yes (software-controllable) |
| Selectable Digital HPF | Yes |
| Напряжение питания | 3.3 V (single supply) |
| Корпус | 40-LFCSP-WQ (6x6 mm) |
| Automotive Qualification | AEC-Q100 qualified |
| Уровень MSL | 3 (168 hours) |
| Тип монтажа | Surface Mount |
| Статус RoHS | ROHS3 Compliant |
Конфигурация выводов ADAU1979WBCPZ-RL
| Контакт 1 | INL1+ — Left channel 1 positive differential input |
| Контакт 2 | INL1- — Left channel 1 negative differential input |
| Контакт 3 | VDD — 3.3V digital supply |
| Контакт 4 | GND — Digital ground |
| Контакт 5 | AVDD1 — Analog supply for ADC 1 - decouple with 100nF to AGND1 |
| Контакт 6 | AGND1 — Analog ground reference for ADC 1 |
| Контакт 7 | VREF — Internal reference voltage decoupling node |
| Контакт 8 | FILT+ — Reference filter capacitor positive terminal |
| Контакт 9 | FILT- — Reference filter capacitor negative terminal |
| Контакт 10 | INL2+ — Left channel 2 positive differential input |
| Контакт 11 | INL2- — Left channel 2 negative differential input |
| Контакт 12 | AVDD2 — Analog supply for ADC 2 - decouple with 100nF to AGND2 |
| Контакт 13 | AGND2 — Analog ground reference for ADC 2 |
| Контакт 14 | INL3+ — Left channel 3 positive differential input |
| Контакт 15 | INL3- — Left channel 3 negative differential input |
| Контакт 16 | AVDD3 — Analog supply for ADC 3 - decouple with 100nF to AGND3 |
| Контакт 17 | AGND3 — Analog ground reference for ADC 3 |
| Контакт 18 | INL4+ — Left channel 4 positive differential input |
| Контакт 19 | INL4- — Left channel 4 negative differential input |
| Контакт 20 | AVDD4 — Analog supply for ADC 4 - decouple with 100nF to AGND4 |
| Контакт 21 | AGND4 — Analog ground reference for ADC 4 |
| Контакт 22 | MCLK — Master clock input (e.g., 12.288 MHz for 48 kHz Fs) |
| Контакт 23 | BCLK — Bit clock for serial audio output (master or slave) |
| Контакт 24 | LRCLK — Word clock / frame sync for serial audio output |
| Контакт 25 | SDATA — Serial audio data output |
| Контакт 26 | SCLK — Serial control clock (I²C SCL / SPI SCLK) |
| Контакт 27 | SDIO — Serial control data (I²C SDA / SPI MOSI) |
| Контакт 28 | SDA_IN — SPI MISO / I²C address input |
| Контакт 29 | I2S/SPI — Control interface mode select strap |
| Контакт 30 | ADDR0 — I²C address bit 0 strap |
| Контакт 31 | ADDR1 — I²C address bit 1 strap |
| Контакт 32 | RESET — Active-low hardware reset |
| Контакт 33 | PDN — Active-low power-down input |
| Контакт 34 | MUTE — Hardware mute input (alternative to software mute) |
| Контакт 35 | GPIO0 — General-purpose I/O / interrupt output |
| Контакт 36 | GPIO1 — General-purpose I/O |
| Контакт 37 | AVDD5 — Analog supply for PLL/bias - decouple with 100nF to AGND5 |
| Контакт 38 | AGND5 — Analog ground for PLL/bias |
| Контакт 39 | VDD_IO — Digital I/O supply (1.8V to 3.3V) |
| Контакт 40 | EPAD — Exposed thermal pad - must be soldered to AGND plane for thermal dissipation |
Типичное применение
ADAU1979WBCPZ-RL подходит для 6 применениеs: Automotive Head-Unit Audio Capture, Active Noise Cancellation (ANC) Microphone Array, Automotive Infotainment Line Input, Multi-Channel Professional Audio Interface, Automotive Telematics & Hands-Free Microphone, Industrial Multi-Channel Sensor Acquisition.
Automotive Head-Unit Audio Capture
The ADAU1979WBCPZ-RL is a primary fit for automotive head-unit audio signal acquisition, where 4 channels of 24-bit 192 kHz conversion with AEC-Q100 qualification are required. Its 4.5 V rms input range handles line-level sources (headphone, aux, Bluetooth return) directly without external attenuation, while the on-chip PGA and digital volume per channel replace external op-amp stages. According to the Analog Devices datasheet, the continuous-time Σ-Δ front end minimizes EMI - critical when the part sits next to switching power and RF circuits in an automotive ECU. The 40-LFCSP-WQ package and -40 to +125 C operating range support under-dash mounting.
Рекомендуется
Active Noise Cancellation (ANC) Microphone Array
For in-cabin active noise cancellation, the ADAU1979WBCPZ-RL captures 4 microphone channels simultaneously at up to 48 kHz with phase-aligned sampling. The TDM output mode streams all four channels on a single data line, freeing DSP pins for additional sensors, and the selectable HPF removes wind and DC mic bias offsets without an external capacitor. Its 4.5 V rms input range and 100 dB+ SNR (typical) provide ample dynamic range for cabin-noise mics with high SPL transients per the Analog Devices datasheet, and AEC-Q100 qualification matches the automotive cabin environment.
Рекомендуется
Automotive Infotainment Line Input
The ADAU1979WBCPZ-RL digitizes 4 line inputs on an automotive infotainment main board, supporting AM/FM tuner, CD changer, USB audio, and aux-in sources simultaneously. I²S/TDM output routes all sources to a host DSP for mixing, while I²C control lets the head-unit microcontroller mute, balance, and adjust volume cleanly via the on-chip autoramp and clickless mute functions. The 3.3 V single supply matches infotainment SoC rails and the AEC-Q100 grade handles cranking transients and thermal stress under the dashboard per the Analog Devices datasheet.
Рекомендуется
Multi-Channel Professional Audio Interface
In a 4-channel USB audio interface or studio mixer, the ADAU1979WBCPZ-RL delivers 24-bit / 192 kHz conversion from 4 balanced line inputs simultaneously. Its 4.5 V rms input headroom handles +24 dBu pro-audio levels with margin, eliminating external pad networks, while the high PSRR (>80 dB at 1 kHz typical) rejects USB-bus noise on the analog supply. The Analog Devices datasheet notes the part can synchronize to an external master clock for low-jitter studio operation, and its autoramp gain control is software-programmable via SPI for motorized fader feedback systems.
Рекомендуется
Automotive Telematics & Hands-Free Microphone
For hands-free Bluetooth telephony and in-cabin voice recognition, the ADAU1979WBCPZ-RL captures 4 beamforming microphone channels at 16 kHz (telephony) or 48 kHz (voice recognition). The continuous-time Σ-Δ front end rejects GSM/LTE cellular band noise common in automotive cabins, while the on-chip HPF removes low-frequency rumble and DC mic bias. Per the Analog Devices datasheet, AEC-Q100 qualification and 3.3 V operation suit it to the constrained telematics control unit (TCU) power budget and thermal envelope.
Рекомендуется
Industrial Multi-Channel Sensor Acquisition
Beyond audio, the ADAU1979WBCPZ-RL can digitize 4 industrial vibration or acoustic emission sensors on a single PCB, leveraging its 24-bit resolution and 192 kHz maximum sample rate for ultrasonic vibration analysis. The autoramp PGA accepts sensor outputs from millivolts to several volts without manual gain switching, and the I²C/SPI control port allows remote gain adjustment from an industrial PLC. While not the datasheet's primary use case, the analog performance and 40-LFCSP-WQ footprint suit it to compact industrial condition-monitoring systems.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ADAU1979WBCPZ-RL — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ADAU1979WBCPZ | ADAU1979WBCPZ-R7 | ADAU1977WBCPZ | ADAU1978WBCPZ |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 40-LFCSP-WQ (6x6 mm) | 40-LFCSP-WQ (6x6 mm) - same | 40-LFCSP-WQ (6x6 mm) - same | 40-LFCSP-WQ (6x6 mm) - same | 40-LFCSP-WQ (6x6 mm) - same |
| Channels | 4 | 4 | 4 | 4 | 4 |
| Resolution | 24-bit | 24-bit | 24-bit | 24-bit | 24-bit |
| Max Sample Rate | 192 kHz | 192 kHz | 192 kHz | 192 kHz | 192 kHz |
| Input Level | 4.5 V rms | 4.5 V rms | 4.5 V rms | 4.5 V rms | 4.5 V rms |
| Control Interface | I²C / SPI | I²C / SPI | I²C / SPI | I²C / SPI | I²C / SPI |
| TDM Output Support | Yes | Yes | Yes | No | Yes |
| Automotive Grade (AEC-Q100) | Yes | Yes | Yes | Yes | Yes |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
Ключевые отличия
- Direct 4.5 V rms input without external attenuation (против PCM1863 (Texas Instruments))
- AEC-Q100 automotive qualification integrated (против ADAU1962A (Analog Devices))
- On-chip PGA + digital volume per channel (против PCM1864 (Texas Instruments))
- Continuous-time sigma-delta front end for low EMI (против Discrete sigma-delta ADCs with switched-capacitor input)
Заметки по проектированию
The ADAU1979WBCPZ-RL requires a single 3.3 V supply but has 5 separate analog supply pins (AVDD1-5) plus VDD and VDD_IO that must each be decoupled to their nearest AGND pin with a 100 nF ceramic capacitor placed as close to the IC as physically possible. Add a bulk aluminum electrolytic capacitor of at least 10 uF on the same PCB near the part. The Analog Devices datasheet emphasizes that a clean analog supply is critical for THD+N performance - place a ferrite bead between the 3.3V digital and analog rails if they share an upstream regulator.
The 40-LFCSP-WQ (6x6 mm) package has a center exposed thermal pad (EPAD) that MUST be soldered to the AGND plane for both thermal dissipation and electrical ground reference. Thermal vias on a 1.2 mm pitch grid under the EPAD are strongly recommended to keep junction temperature within the automotive -40 to +125 C range. Per the Analog Devices datasheet, missing or partial EPAD soldering can degrade PSRR by 10+ dB and cause thermal shutdown under load.
Do not exceed 4.5 V rms on any analog input or the input PGA will clip and distort - design the gain plan to keep peak input below this limit with 6 dB of headroom for transients. The MCLK frequency must be selected from the supported master clock ratios in the datasheet (e.g., 256 x Fs for 48 kHz = 12.288 MHz, or 384 x Fs = 18.432 MHz). Using an unsupported MCLK ratio causes the PLL to fail to lock and the ADC outputs invalid data. Verify lock via the GPIO interrupt register readback before enabling audio output.
Route the analog differential input traces (INL1+, INL1-, etc.) as matched-length 100 ohm differential pairs from the connector to the IC pins, with a continuous ground plane underneath and no other signal traces crossing them. Keep digital audio traces (BCLK, LRCLK, SDATA) on the opposite side of the PCB or shielded by ground to prevent coupling into the high-impedance analog inputs. Per the Analog Devices datasheet, the continuous-time sigma-delta front end tolerates moderate digital noise but degrades to 80 dB THD+N under worst-case coupling.
Информация о соответствии
ROHS3 Compliant and REACH Unaffected per partgenie.ai product analysis (2026-10-06). AEC-Q100 qualified for automotive applications. MSL 3 (168 hours) moisture sensitivity per the manufacturer datasheet.
