PCM1821
- Stereo high-performance ADC:
- 2-channel analog microphones or line-in
- ADC line and microphone differential input performance:
- PCM1820 dynamic range:
- 123-dB, dynamic range enhancer enabled
- 113-dB, dynamic range enhancer disabled
- PCM1821 dynamic range: 106 dB
- THD+N: –95 dB
- PCM1820 dynamic range:
- ADC differential 2-VRMS full-scale input
- ADC sample rate (fS) = 8 kHz to 192 kHz
- Hardware pin control configurations
- Linear-phase or low-latency filter selection
- Flexible audio serial data interface:
- Master or slave interface selection
- 32-bits, 2-channel TDM
- 32-bits, 2-channel I2S
- Automatic power-down upon loss of audio clocks
- Integrated high-performance audio PLL
- Single-supply operation: 3.3 V
- I/O-supply operation: 3.3 V or 1.8 V
- Power consumption for 3.3-V AVDD supply:
- 19.6 mW/channel at 16-kHz sample rate
- 21.3 mW/channel at 48-kHz sample rate
The PCM182x is a high-performance, Burr-Brown™ audio analog-to-digital converter (ADC) that supports simultaneous sampling of up to two analog channels. The device supports differential line and microphone inputs with a 2-VRMS full-scale signal. The device integrates a phase-locked loop (PLL), a DC removal high-pass filter (HPF), and supports sample rates up to 192 kHz. The device supports time-division multiplexing (TDM) or I2S audio formats, selectable with the hardware pin level. Additionally, the PCM182x supports master and slave mode selection for the audio bus interface operation. These integrated high-performance features, along with the ability to be powered from a single supply of 3.3 V, make the device an excellent choice for cost-sensitive, space-constrained audio systems in far-field microphone recording applications.
The PCM182x is specified from –40°C to +125°C, and is offered in a 20-pin WQFN package.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | PCM182x Stereo Channel, 32-Bit, 192-kHz, Burr-BrownTM Audio ADC datasheet (Rev. A) | PDF | HTML | 2021/6/25 | ||
| 應用說明 | Working With Analog Inputs in the TLV320ADCX120 and PCMX120-Q1 Family | PDF | HTML | 2023/7/17 |
設計與開發
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PCM1821EVM — 具 106-dB SNR 評估模組的 PCM1821 立體聲道通道、32 位元、192-kHz 音訊 ADC
PCM1821 評估模組 (EVM) 可讓使用者測試 PCM1821 的功能，其為雙通道、硬體控制、高性能、音訊類比轉數位轉換器 (ADC)。PCM1821 適用各種應用，其中包括語音啟用系統、專業麥克風、音訊會議、可攜式運算、通訊和娛樂。EVM 提供與輸入、輸出和硬體控制接腳的方便連接。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTE) | 20 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。