TPA2005D1-Q1是TI公司的一款扬声器放大器（AB类/D类）产品，TPA2005D1-Q1是汽车类 1.4W 单声道无滤波 D 类音频功率放大器，本页介绍了TPA2005D1-Q1的产品说明、应用、特性等，并给出了与TPA2005D1-Q1相关的TI元器件型号供参考。
TPA2005D1-Q1 - 汽车类 1.4W 单声道无滤波 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 - TI公司（Texas Instruments，德州仪器）
The TPA2005D1 is a 1.4-W high-efficiency filter-free class-D audio power amplifier in a QFN or MSOP package that requires only three external components.
Features like 84% efficiency, –71-dB PSRR at 217Hz, improved RF-rectification immunity, and 15-mm2 total PCB area make the TPA2005D1 ideal for cellular handsets. A fast start-up time of 9ms with minimal pop makes the TPA2005D1 ideal for PDA applications.
In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the TPA2005D1. The device allows independent gain control by summing the signals from each function, while minimizing noise to only 48 µVRMS.
- Qualified for Automotive Applications
- 1.4 W Into 8 From a 5-V Supply at THD = 10% (Typ)
- Maximum Battery Life and Minimum Heat
- Efficiency With an 8- Speaker:
- 84% at 400 mW
- 79% at 100 mW
- 2.8-mA Quiescent Current
- 0.5-µA Shutdown Current
- Efficiency With an 8- Speaker:
- Only Three External Components
- Optimized PWM Output Stage Eliminates LC Output Filter
- Internally Generated 250-kHz Switching Frequency Eliminates Capacitor and Resistor
- Improved PSRR (–71 dB at 217 Hz) and Wide Supply Voltage (2.5 V to 5.5 V) Eliminates Need for a Voltage Regulator
- Fully Differential Design Reduces RF Rectification and Eliminates Bypass Capacitor
- Improved CMRR Eliminates Two Input Coupling Capacitors
- Space-Saving Packages
- 3 mm × 3 mm QFN package (DRB)
- 3 mm × 5 mm MSOP PowerPAD™ Package (DGN)
PowerPAD is a trademark of Texas Instruments.
