The TPA6140A2 (also known as TPA6140) is a Class-G DirectPath stereo headphone amplifier with built-in I²C volume control. Class-G technology maximizes battery life by adjusting the voltage supplies of the headphone amplifier based on the audio signal level. At low level audio signals, the internal supply voltage is reduced to minimize power dissipation. DirectPath™ technology eliminates external DC-blocking capacitors.

The device operates from a 2.5 V to 5.5 V supply voltage. Class-G operation keeps total supply current below 5.0 mA while delivering 500 µW per channel into 32 . Shutdown mode reduces the supply current to less than 3 µA and is activated through the I²C interface.

The TPA6140A2 (TPA6140) I²C register map is compatible to the TPA6130A2, simplifying software development.

The amplifier outputs have short-circuit and thermal-overload protection along with ±8 kV HBM ESD protection, simplifying end equipment compliance to the IEC 61000-4-2 ESD standard.

The TPA6140A2 (TPA6140) is available in a 0,4 mm pitch, 16-bump 1,6 mm × 1,6 mm WCSP (YFF) package.

• TI Class-G Technology Significantly Prolongs Battery Life and Music Playback Time
  • 0.6mA / Ch Quiescent Current
  • 50% to 80% Lower Quiescent Current than Ground-Referenced Class-AB Headphone Amplifiers
• DirectPath? Technology Eliminates Large Output DC-Blocking Capacitors
  • Outputs Biased at 0V
  • Improves Low Frequency Audio Fidelity
• I2C Volume Control
  • –59dB to +4dB Gain
• Active Click and Pop Suppression
• Fully Differential Inputs Reduce System Noise
  • Also Configurable as Single-Ended Inputs
• SGND Pin Eliminates Ground Loop Noise
• Wide Power Supply Range: 2.5 V to 5.5 V
• 100 dB Power Supply Noise Rejection
• Short-Circuit Current Limiter
• Thermal-Overload Protection
• Software Compatible with TPA6130A2
• 0,4 mm Pitch, 1,6mm× 1,6mm WCSP Package
• APPLICATIONS
  • Cellular Phones / Music Phones
  • Portable Media / MP3 Players
  • Portable CD / DVD Players

• Output power (W)
• 0.025
• Analog supply (Min) (V)
• 2.5
• Analog supply (Max) (V)
• 5.5
• PSRR (dB)
• 105
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 85
• Headphone channels
• Stereo
• Volume control
• Yes
• Shutdown current (ISD) (uA)
• 1
• Architecture
• Class-G
• Iq per channel (Typ) (mA)
• 0.6

TPA6140A2的完整型号有：TPA6140A2YFFR、TPA6140A2YFFT，以下是这些产品的关键参数及官网采购报价：

TPA6140A2YFFR，工作温度：-40 to 85，封装：DSBGA (YFF)-16，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网TPA6140A2YFFR的批量USD价格：.749（1000+）

TPA6140A2YFFT，工作温度：-40 to 85，封装：DSBGA (YFF)-16，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网TPA6140A2YFFT的批量USD价格：.885（1000+）

TPA6140A2YFFEVM — TPA6140A2 评估模块 (EVM)

The TPA6140A2YFFEVM allows the engineer to evaluate the TPA6140A2, a stereo Class-G DirectPath (capacitor-free) headphone amplifier in a WCSP package. The TPA6140A2 has extremely low power consumption that enables much longer battery life in portable applications.

TPA6130A2SW-LINUX — 适用于 TPA6130A2 的 Linux 驱动程序

Linux 驱动程序支持 TPA61x0A2 系列立体声耳机放大器。Linux 驱动程序支持通过 I2C 总线和接口与 Linux DAPM（便携式设备动态音频电源管理）系统进行通信。
Linux 主线状态

在 Linux 主线中提供：是
可通过 git.ti.com 获取：不适用

支持的器件：

• tpa6130a2
• tpa6140a2

Linux 源文件

与该器件关联的文件为：

sound/soc/codecs/tpa6130a2.c

Documentation/devicetree/bindings/sound/tpa6130a2.txt

sound/soc/codecs/tpa6130a2.h

(...)

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