PCM1840
- Multichannel high-performance ADC:
- 4-channel analog microphones or line-in
- ADC line and microphone differential input performance:
- Dynamic range:
- 123-dB, dynamic range enhancer enabled
- 113-dB, dynamic range enhancer disabled
- THD+N: –98 dB
- 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, 4-channel TDM
- 32-bits, 2-channel TDM
- 32-bits, 2-channel I2S
- 32-bits, 2-channel left-justified (LJ)
- Automatic power-down upon loss of audio clocks
- Integrated high-performance audio PLL
- Low-noise MICBIAS 2.75-V output
- 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:
- 17.0 mW/channel at 16-kHz sample rate
- 18.4 mW/channel at 48-kHz sample rate
The PCM1840 is a high-performance, Burr-Brown™ audio analog-to-digital converter (ADC) that supports simultaneous sampling of up to four analog channels. The device supports differential line and microphone inputs with 2-VRMS full-scale signal. The device integrates microphone bias voltage, 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), I2S, or left-justified (LJ) audio formats, selectable with the hardware pin level. Additionally, the PCM1840 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 PCM1840 is specified from –40°C to +125°C, and is offered in a 24-pin WQFN package.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | PCM1840 Quad Channel, 32-Bit, 192-kHz, Burr-BrownTM Audio ADC datasheet | PDF | HTML | 2020年 4月 1日 |
設計與開發
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PCM1840EVM — PCM1840 四通道 32 位元 192-kHz 音訊 ADC 評估模組
PCM1840 評估模組 (EVM) 可讓使用者測試 PCM1840 產品的功能，其為硬體控制、四通道、高性能、音訊類比轉數位轉換器 (ADC)。PCM1840 適用各種應用，其中包括聲控系統、專業麥克風、音訊會議、可攜式運算、通訊和娛樂。
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTW) | 24 | Ultra Librarian |
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