The TLV320AIC31 is a low-power stereo audio codec with a stereo headphone amplifier, as well as multiple inputs and outputs, programmable in single-ended or fully-differential configurations. Extensive register-based power control is included, enabling stereo 48-kHz digital-to-analog converter (DAC) playback as low as 14 mW from a 3.3-V analog supply, making it ideal for portable, battery-powered audio and telephony applications.

The record path of the TLV320AIC31 contains integrated microphone bias, a digitally-controlled stereo microphone pre-amp, and automatic gain control (AGC), with mix/mux capability among the multiple analog inputs. The playback path includes mix/mux capability from the stereo DAC and selected inputs, through programmable volume controls to the various outputs.

The TLV320AIC31 contains four high-power output drivers as well as two fully differential output drivers. The high-power output drivers are capable of driving a variety of load configurations, including up to four channels of single-ended, 16- speakers in a BTL configuration at 500 mW per channel.

The stereo audio DAC supports sampling rates from 8 kHz to 96 kHz and includes programmable digital filtering in the DAC path for 3D, bass/treble/midrange effects, speaker equalization, and de-emphasis for 32-kHz, 44.1-kHz, and 48-kHz rates. The stereo-audio analog-to-digital converter (ADC) supports sampling rates from 8 kHz to 96 kHz and is preceded by programmable gain amplifiers providing up to +59.5 dB analog gain for low-level microphone inputs.

The serial control bus supports the I²C protocol, while the serial-audio data bus is programmable for I²S, left-/right-justified, DSP, or TDM modes. A highly programmable PLL is included for flexible clock generation and support for all standard audio rates from a wide range of available MCLKs, varying from 512 kHz to 50 MHz, with special attention paid to the most popular cases of 12-MHz, 13-MHz, 16-MHz, 19.2-MHz, and 19.68-MHz system clocks.

The TLV320AIC31 operates from an analog supply of 2.7 V to 3.6 V, a digital core supply of 1.65 V to 1.95 V, and a digital I/O supply of 1.1 V to 3.6 V. The device is available in a 5 × 5 mm, 32-lead QFN package.

• Stereo Audio DAC:
  • 100-dB (A-Weighted) Signal-to-Noise Ratio
  • 16-/20-/24-/32-Bit Data
  • Supports Rates From 8 kHz to 96 kHz
  • 3D/Bass/Treble/EQ/De-Emphasis Effects
• Stereo Audio ADC:
  • 92-dB (A-Weighted) Signal-to-Noise Ratio
  • Supports Rates From 8 kHz to 96 kHz
• Six Audio Input Pins:
  • Two Stereo Differential/Single-Ended Inputs
• Six Audio Output Drivers:
  • Stereo 8-, 500-mW/Channel Speaker Drive Capability
  • Stereo Fully-Differential or Single-Ended Headphone Drivers
  • Fully Differential Stereo Line Outputs
• Low Power: 14-mW Stereo, 48-kHz Playback With 3.3-V Analog Supply
• Programmable Input/Output Analog Gains
• Automatic Gain Control (AGC) for Recording
• Programmable Microphone Bias Level
• Programmable PLL for Flexible Clock Generation
• I2C? Control Bus
• Audio Serial Data Bus Supports I2S?, Left-/Right-Justified, DSP, and TDM Modes
• Extensive Modular Power Control
• Power Supplies:
  • Analog: 2.7 V to 3.6 V
  • Digital Core: 1.65 V to 1.95 V
  • Digital I/O: 1.1 V to 3.6 V
• Available Packages: 5-mm × 5-mm, 32-Pin QFN

I2C, I2S are trademarks of NXP Semiconductors. All other trademarks are the property of their respective owners.

• Number of ADC channels
• 4
• Number of DAC channels (#)
• 2
• Digital audio interface
• L, R, I2S, DSP
• Analog inputs
• 6
• Sampling rate (Max) (kHz)
• 96
• Rating
• Catalog
• Features
• Matrix mixing, Phase-locked loop (PLL), Stereo speaker amplifier, Stereo headphone amplifier
• ADC SNR (Typ) (dB)
• 90
• DAC SNR (Typ) (dB)
• 100

TLV320AIC31的完整型号有：TLV320AIC31IRHBR、TLV320AIC31IRHBT，以下是这些产品的关键参数及官网采购报价：

TLV320AIC31IRHBR，工作温度：-40 to 85，封装：VQFN (RHB)-32，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TLV320AIC31IRHBR的批量USD价格：4.73（1000+）

TLV320AIC31IRHBT，工作温度：-40 to 85，封装：VQFN (RHB)-32，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TLV320AIC31IRHBT的批量USD价格：5.59（1000+）

TLV320AIC3XSW-LINUX — 适用于 TLV320AIC3X 的 Linux 驱动程序

Linux 驱动程序支持用于 TLV320AIC3x 系列的低功耗立体声编解码器，通过 I2C 总线和接口与 Linux 便携式设备动态音频电源管理 (DAPM) 系统进行通信。
Linux 主线状态

Linux 主线中提供：是
可通过 git.ti.com 获取：不适用

Linux 源文件

与该器件关联的文件为：

sound/soc/codecs/tlv320aic3x.c

Documentation/devicetree/bindings/sound/tlv320aic3x.txt

sound/soc/codecs/tlv320aic3x.h

include/sound/tlv320aic3x.h

源文件 (...)

TLV320AIC31 IBIS Model

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)

COEFFICIENT-CALC — 数字双二阶滤波器系数计算器

COEFFICIENT-CALC (TIBQ) 可以计算 TI 音频编解码器中实施的数字滤波器双二阶传输函数的系数。通过选择滤波器类型并在显示传输函数增益和相位图的窗口中移动控制点，可以对数字滤波器的特性进行调节。