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PCM1864
- High SNR Performance:
- 110-dB SNR (PCM1861/63/65)
- 103-dB SNR (PCM1860/62/64)
- ADC Sample Rate (fS) = 8 kHz to 192 kHz
- Up To Four Independent ADC Channels Available
- Single-Ended, 2.1-VRMS Full-Scale (FS) Input
- Differential, 4.2-VRMS FS Input
- Hardware (HW) Control: PCM1860/61
- Software (SW) Control (I2C or SPI):
PCM1862/63/64/65 - Support for Up To Four Digital Microphones
(SW-Controlled Devices) - Programmable Gain Amplifier (PGA):
- Fixed Gain: 0 dB, 12 dB, 32 dB
(PCM1860/61) - SW-Controlled Gain: –12 dB to +32 dB
(PCM1862/63/64/65)
- Fixed Gain: 0 dB, 12 dB, 32 dB
- Integrated High-Performance Audio PLL
- Single 3.3-V Power-Supply Operation
- Power Dissipation at 3.3 V:
- < 85 mW (PCM1860/61/62/63)
- < 145 mW (PCM1864/65)
- Energysense Audio Content Detector for Auto System Wakeup and Sleep
- Master or Slave Audio Interface
- Automatic PGA Clipping Suppression Control
- PCB-Footprint Compatibility Across All Devices
The PCM186x family (PCM1860, PCM1861, PCM1862, PCM1863, PCM1864, and PCM1865) of audio front-end devices take a new approach to audio-function integration to ease compliance with European Ecodesign legislation, while enabling high-performance end products at reduced cost. The PCM186x support single-supply operation at 3.3 V, and offer an integrated programable gain amplifier (PGA) in a small package; this configuration makes it feasible to implement smaller and smarter products at a reduced cost.
The PCM186x audio front end supports single-ended input levels from small-mV microphone inputs to 2.1-VRMS line inputs, without external resistor dividers. The front-end mixer (MIX), multiplexer (MUX), and PGA also support differential (Diff), pseudo-differential, and single-ended (SE) inputs, making these devices an ideal interface for products that require interference suppression. The PCM186x integrate many system-level functions that assist or replace some DSP functions.
An integrated band-gap voltage reference provides excellent PSRR, so that a dedicated analog 3.3-V rail may not be required.
技術文件
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檢視所有 7 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | PCM186x 4-Channel or 2-Channel, 192-kHz, Audio ADCs datasheet (Rev. D) | PDF | HTML | 2018年 3月 28日 |
| Analog Design Journal | Selecting capacitors to minimize distortion in audio applications (Rev. A) | PDF | HTML | 2023年 5月 2日 | |
| White paper | Designing professional audio mixers for every scenario | 2018年 6月 28日 | ||
| Application note | Sitara Linux ALSA DSP Microphone Array Voice Recognition | 2017年 6月 30日 | ||
| Design guide | PCM1864 Based Circular Microphone Board Reference Design | 2017年 4月 10日 | ||
| EVM User's guide | PCM186x EVM User's Guide | 2015年 3月 31日 | ||
| Application note | Optimizing Signal Chain Noise on PCM186x Devices | 2015年 2月 5日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
開發板
PCM1864EVM — 具有通用前端的 PCM1864 103dB 四通道軟體控制音訊 ADC 評估模組
The PCM1864 evaluation module (EVM) is an easy-to-use board for full evaluation of the four channel PCM1864 analog-to-digital converter (ADC). The included USB-12X board connects the EVM to the PC and provides 5-V power. The PCM1864EVM is controlled by PurePath™ Console, which allows the (...)
使用指南: PDF
驅動程式或資料庫
PCM186X-DRIVERS — PCM186x ADC 系列 Linux 驅動程式支援
These Linux drivers support our low-power audio analog-to-digital converters (ADCs) in the PCM18xx device family, and include both .c and .h files. The "Go to third party" buttons below will allow you to downlod the appropriate drivers from git.kernal.org.
Linux main line status
Linux main line status
Available in Linux (...)
模擬工具
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
參考設計
TIDEP-0088 — 適用於基於語音的應用的音訊預處理系統參考設計
This reference design uses multiple microphones, a beamforming algorithm, and other processes to extract clear speech and audio amidst noise and other clutter. The rapid increase in applications that are used in noise-prone environments for voice activated digital assitants creates demand (...)
參考設計
TIDEP-0083 — 具有 IBM Watson 雲端連線的語音觸發和處理參考設計
This reference design enables a single platform for demonstrating end-to-end voice capture, recognition and processing functionality. It further enhances application development time by including pre-integration with the sensory keyword recognition software and the IBM Watson Cloud services. (...)
參考設計
TIDA-01454 — 基於 PCM1864 的圓形麥克風基板 (CMB) 參考設計
The PCM1864 circular microphone board (CMB) is a low-cost easy-to-use reference design for applications that require clear-spoken audio, such as voice triggering and speech recognition. This TI Design uses a microphone array to capture a voice signal, and converts it to a digital stream (...)
參考設計
TIDA-01470 — 基於 PCM1864 的線性麥克風基板 (LMB) 參考設計
This easy-to-use reference design is for applications that are cost sensitive and require clear-spoken audio, such as voice triggering and speech recognition. This reference design uses a linear-microphone array (up to four) to capture a voice signal and convert it to a digital stream (...)
參考設計
TIDEP-0077 — 適用於基於語音的應用的音訊預處理系統參考設計
This reference design uses multiple microphones, a beamforming algorithm, and other processes to extract clear speech and audio amidst noise and other clutter. The rapid increase in applications that are used in noise-prone environments for voice activated digital assistants creates (...)
參考設計
TIDEP-0099 — 適用於基於語音的應用的音訊預處理系統參考設計
This reference design uses multiple microphones, a beamforming algorithm, and other processes to extract clear speech and audio amidst noise and other clutter. The rapid increase in applications that are used in noise-prone environments for voice activated digital assistants creates demand (...)
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|---|---|---|
| TSSOP (DBT) | 30 | 檢視選項 |
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