The TPA2017D2 (sometimes referred to as TPA2017) is a stereo, filter-free Class-D audio power amplifier with SmartGain™ dynamic range compression (DRC), automatic gain control (AGC), and noise gate. It is available in a 4 mm x 4mm QFN package.

SmartGain™ functions are configured to automatically prevent distortion of the audio signal and enhance quiet passages that are normally not heard. SmartGain™ is a combined AGC DRC and Limiter that protects the speaker from damage at high power levels and compress the dynamic range of voice or music to fit within the dynamic range of the speaker. SmartGain™ DRC, limiter, and noise gate functions can be enabled or disabled. The TPA2017D2 (TPA2017) is capable of driving 1.7 W/Ch at 4 V or 750mW/Ch at 3.6 V into 8 load or 2.8 W/Ch at 5 V or 1.5 W/Ch at 3.6 V into 4 . The device features an enable pin and also provides thermal and short circuit protection.

In addition to these features, a fast start-up time and small package size make the TPA2017D2 (TPA2017) an ideal choice for Notebook PCs, PDAs and other portable applications.

• Filter-Free Class-D Architecture
• 3 SmartGain? functions
  • AGC DRC Function
  • AGC Limiter Function
  • AGC Noise Gate Function
• 1.7 W/Ch Into 8 at 5 V (10% THD+N)
• 750 mW/Ch Into 8 at 3.6 V (10% THD+N)
• 2.8 W/Ch Into 4 at 5 V (10% THD+N)
• 1.5 W/Ch Into 4 at 3.6 V (10% THD+N)
• Power Supply Range: 2.5 V to 5.5 V
• Low Supply Current: 3.5 mA
• Low Shutdown Current: 0.2 μA
• High PSRR: 75 dB at 217 Hz
• Fast Start-up Time: 5 ms
• Short-Circuit and Thermal Protection
• Space-Saving Package
  • 4 mm × 4 mm QFN (RTJ)
• APPLICATIONS
  • Wireless or Cellular Handsets and PDAs
  • Portable Navigation Devices
  • Portable DVD Player
  • Notebook PCs
  • Portable Radio
  • Portable Games
  • Educational Toys
  • USB Speakers

• Audio input type
• Analog Input
• Architecture
• Class-D
• Speaker channels (Max)
• Stereo
• Power stage supply (Max) (V)
• 5.5
• Power stage supply (Min) (V)
• 2.5
• Load (Min) (ohms)
• 4
• Output power (W)
• 2.8
• THD + N @ 1 kHz (%)
• 1
• Iq (Typ) (mA)
• 4.5
• Control interface
• GPIO
• Closed/open loop
• Closed
• Analog supply (Min) (V)
• 2.3
• Analog supply (Max) (V)
• 5.2
• PSRR (dB)
• 80
• Operating temperature range (C)
• -40 to 85

TPA2017D2的完整型号有：TPA2017D2RTJR、TPA2017D2RTJT，以下是这些产品的关键参数及官网采购报价：

TPA2017D2RTJR，工作温度：-40 to 85，封装：QFN (RTJ)-20，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TPA2017D2RTJR的批量USD价格：.692（1000+）

TPA2017D2RTJT，工作温度：-40 to 85，封装：QFN (RTJ)-20，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TPA2017D2RTJT的批量USD价格：.81（1000+）

TPA2017D2RTJEVM — TPA2017D2 评估模块 (EVM)

TPA2017D2RTJEVM 允许工程师对采用 QFN 封装的具有 SmartGain™ (AGC/DRC) 的 TPA2017D2 D 类立体声音频功率放大器进行评估。TPA2017D2 具有 2 个便于轻松配置的 GPIO 引脚。

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