TPA2012D2 - 2.1W 立体声 D 类音频功率放大器

TPA2012D2是TI德州仪器公司的一款扬声器放大器（AB类/D类）产品，TPA2012D2是2.1W 立体声 D 类音频功率放大器，本站介绍了TPA2012D2的封装应用图解、特点和优点、功能等，并给出了与TPA2012D2相关的TI元器件型号供参考。

TPA2012D2 - 2.1W 立体声 D 类音频功率放大器 - 扬声器放大器（AB类/D类） - 低功耗放大器 - 德州仪器

产品描述

The TPA2012D2 is a stereo, filter-free, Class-D audioamplifier (class-D amp) available in a WCSP, QFN, or PWP package. The TPA2012D2 only requires two external components for operation.

The TPA2012D2 features independent shutdown controls for each channel. The gain can be selected to 6, 12, 18, or 24 dB utilizing the G0 and G1 gain select pins. High PSRR and differential architecture provide increased immunity to noise and RF rectification. In addition to these features, a fast startup time and small package size make the TPA2012D2 class-D amp an ideal choice for both cellular handsets and PDAs.

The TPA2012D2 is capable of driving 1.4 W/Ch at 5 V or 720 mW/Ch at 3.6 V into 8 Ω. The TPA2012D2 is also capable of driving 4 &#a3A9;. The TPA2012D2 is thermally limited in WCSP and may not achieve 2.1 W/Ch for 4 Ω. The maximum output power in the WCSP is determined by the ability of the circuit board to remove heat. The output power versus load resistance graph below shows thermally limited region of the WCSP in relation to the QFN package. The TPA2012D2 provides thermal and short circuit protection.

产品特性

Output Power By Package:
- QFN:
  - 2.1 W/Ch Into 4 Ω at 5 V
  - 1.4 W/Ch Into 8 Ω at 5 V
  - 720 mW/Ch Into 8 Ω at 3.6 V
- WCSP:
  - 1.2 W/Ch Into 4 &#a3A9; at 5 V(1)
  - 1.3 W/Ch Into 8 &#a3A9; at 5V
  - 720 mW/Ch Into 8 A9; at 3.6 V
- Only Two External Components Required
- Power Supply Range: 2.5 V to 5.5 V
- Independent Shutdown Control for Each Channel
- Selectable Gain of 6, 12, 18, and 24 dB
- Internal Pulldown Resistor On Shutdown Pins
- High PSRR: 77 dB at 217 Hz
- Fast Startup Time (3.5 ms)
- Low Supply Current
- Low Shutdown Current
- Short-Circuit and Thermal Protection
- Space Saving Packages
  - 2,01 mm X 2,01 mm NanoFree WCSP (YZH)
  - 4 mm X 4 mm Thin QFN (RTJ) with PowerPAD
- APPLICATIONS
  - Wireless or Cellular Handsets and PDAs
  - Portable DVD Player
  - Notebook PC
  - Portable Radio
  - Portable Gaming
  - Educational Toys
  - USB Speakers

(1)Thermally limited

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