PCM2912A

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具有 USB 接口、单声道麦克风输入和立体声耳机输出的音频编解码器

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数据表

document-pdfAcrobat PCM2912A Audio Codec With USB Interface, Mono Microphone Input and Stereo Headphone Output 数据表 (Rev. A) (英语) PDF | HTML

PCM2912A

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数据表

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产品详情

Number of ADC channels

1

Number of DAC channels

2

Control interface

H/W

Analog inputs

1

Analog outputs

2

Features

Mic bias, PGAs, Sidetone, USB interface

Sampling rate (max) (kHz)

48

Rating

Catalog

Operating temperature range (°C)

-25 to 85

Number of ADC channels

1

Number of DAC channels

2

Control interface

H/W

Analog inputs

1

Analog outputs

2

Features

Mic bias, PGAs, Sidetone, USB interface

Sampling rate (max) (kHz)

48

Rating

Catalog

Operating temperature range (°C)

-25 to 85

TQFP (PJT)

32

81 mm² (9 mm × 9 mm)

On-Chip USB Interface:
- With Full-Speed Transceivers
- Fully Compliant With USB 2.0 Specification
- Certified By USB-IF
- Partially Programmable Descriptors
- Adaptive Isochronous Transfer for Playback
- Asynchronous-Isochronous Transfer for
  Record
- Bus Powered
16-Bit Delta-Sigma ADC and DAC
Sampling Rate:
- 8, 11.025, 16, 22.05, 32, 44.1, or 48 kHz
On-Chip Clock Generator:
- With Single 6-MHz Clock Source
Mono ADC with Microphone Input
- Analog Performance at V_BUS = 5 V:
  - THD+N: 0.01%
  - SNR: 92 dB
  - Dynamic Range: 90 dB
- Decimation Digital Filter
  - Passband Ripple: ±0.05 dB
  - Stop-Band Attenuation: –65 dB
- Single-Ended Voltage Input
- Antialiasing Filter Included
- Digital HPF Included
- Microphone Bias, Microphone Amplifier, and
  Input PGA
Stereo DAC With Headphone Output
- Analog Performance at V_BUS = 5.0 V:
  - THD+N: 0.01% (R_L > 10 kΩ)
  - THD+N: 0.02% (R_L = 32 Ω)
  - SNR: 92 dB
  - Dynamic Range: 90 dB
  - PO: 13 mW (R_L = 32 Ω)
  - PO: 25 mW (R_L = 16 Ω)
- Oversampling Digital Filter
  - Passband Ripple: ±0.1 dB
  - Stop-Band Attenuation: –43 dB
  - Single-Ended Voltage Output
  - Analog LPF Included
  - Sidetone PGA, Output PGA, and HP
    Amplifier
Multifunctions:
- Suspend, Playback, and Record Status Flag
- Microphone Amplifier, Mute, and Gain Control
Pop/Click Noise-Free
Single Power-Supply: 5 V Typical (V_BUS)
Package: 32-Pin TQFP

On-Chip USB Interface:
- With Full-Speed Transceivers
- Fully Compliant With USB 2.0 Specification
- Certified By USB-IF
- Partially Programmable Descriptors
- Adaptive Isochronous Transfer for Playback
- Asynchronous-Isochronous Transfer for
  Record
- Bus Powered
16-Bit Delta-Sigma ADC and DAC
Sampling Rate:
- 8, 11.025, 16, 22.05, 32, 44.1, or 48 kHz
On-Chip Clock Generator:
- With Single 6-MHz Clock Source
Mono ADC with Microphone Input
- Analog Performance at V_BUS = 5 V:
  - THD+N: 0.01%
  - SNR: 92 dB
  - Dynamic Range: 90 dB
- Decimation Digital Filter
  - Passband Ripple: ±0.05 dB
  - Stop-Band Attenuation: –65 dB
- Single-Ended Voltage Input
- Antialiasing Filter Included
- Digital HPF Included
- Microphone Bias, Microphone Amplifier, and
  Input PGA
Stereo DAC With Headphone Output
- Analog Performance at V_BUS = 5.0 V:
  - THD+N: 0.01% (R_L > 10 kΩ)
  - THD+N: 0.02% (R_L = 32 Ω)
  - SNR: 92 dB
  - Dynamic Range: 90 dB
  - PO: 13 mW (R_L = 32 Ω)
  - PO: 25 mW (R_L = 16 Ω)
- Oversampling Digital Filter
  - Passband Ripple: ±0.1 dB
  - Stop-Band Attenuation: –43 dB
  - Single-Ended Voltage Output
  - Analog LPF Included
  - Sidetone PGA, Output PGA, and HP
    Amplifier
Multifunctions:
- Suspend, Playback, and Record Status Flag
- Microphone Amplifier, Mute, and Gain Control
Pop/Click Noise-Free
Single Power-Supply: 5 V Typical (V_BUS)
Package: 32-Pin TQFP

The PCM2912A is the Texas Instruments single-chip, USB stereo audio codec with a USB, 2.0-compliant, full-speed protocol controller and an analog front-end (AFE) function for headset applications.

The USB protocol controller works with no software code, but USB descriptors can be modified on request. The PCM2912A employs SpAct™ architecture, TI’s unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enables independent playback and record sampling rates with low clock jitters.

The PCM2912A is the Texas Instruments single-chip, USB stereo audio codec with a USB, 2.0-compliant, full-speed protocol controller and an analog front-end (AFE) function for headset applications.

The USB protocol controller works with no software code, but USB descriptors can be modified on request. The PCM2912A employs SpAct™ architecture, TI’s unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enables independent playback and record sampling rates with low clock jitters.

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技术文档

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顶层文档	类型	标题	格式选项	日期
*	数据表	PCM2912A Audio Codec With USB Interface, Mono Microphone Input and Stereo Headphone Output 数据表 (Rev. A)	PDF \| HTML	2015-8-25
*	勘误表	Application Information for Difference Between PCM2912A and PCM2912		2008-11-25
	应用手册	Operating Environments for PCM2912A Applications (Rev. A)		2016-11-10
	应用手册	Solving Enumeration Errors in USB Audio DAC and CODEC Designs		2009-10-30

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评估板

DEM-PCM2912AEVM — DEM-PCM2912AEVM 评估模块

DEM-PCM2912A EVM 是一款完整的评估平台，适用于具有 USB 接口的 16 位单声道麦克风输入和立体声耳机输出 PCM2912A 总线供电音频编解码器。所有必要的连接器和电路一应俱全，可以对接音频测试系统和商用音频设备。

DEM-PCM2912A EVM 上装有一个 USB 连接器。两个立体声微型插孔提供立体声音频输出和单声道音频输入功能。PCM2912A 是一款音频编解码器，具有适用于 USB 耳麦、USB 耳机和 USB 音频接口盒的 USB 接口，它集成有单声道输入、立体声耳机输出、模拟环回线路、可编程增益放大器 (PGA) 和麦克风偏置。它可采用 32 引脚 TQFP (...)

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封装	引脚	CAD 符号、封装和 3D 模型
TQFP (PJT)	32	Ultra Librarian

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PCM2912A

具有 USB 接口、单声道麦克风输入和立体声耳机输出的音频编解码器

PCM2912A

产品详情

技术文档

设计与开发

DEM-PCM2912AEVM — DEM-PCM2912AEVM 评估模块

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