TPA2005D1 - 单声道全差动免过滤 D 类放大器

TPA2005D1是TI德州仪器公司的一款扬声器放大器（AB类/D类）产品，TPA2005D1是单声道全差动免过滤 D 类放大器，本站介绍了TPA2005D1的封装应用图解、特点和优点、功能等，并给出了与TPA2005D1相关的TI元器件型号供参考。

TPA2005D1 - 单声道全差动免过滤 D 类放大器 - 扬声器放大器（AB类/D类） - 低功耗放大器 - 德州仪器

产品特性

1.4 W Into 8 Ω From a 5 V Supply at THD = 10% (Typ)
Maximum Battery Life and Minimum Heat
- Efficiency With an 8-Ω Speaker:
  - 84% at 400 mW
  - 79% at 100 mW
- 2.8-mA Quiescent Current
- 0.5-μA Shutdown Current
Capable of Driving an 8-Ω Speaker (2.5 V ≤ VDD ≤ 5.5 V) and a 4-Ω Speaker (2.5 V ≤ VDD ≤ 4.2 V)
Only Three External Components
- Optimized PWM Output Stage Eliminates LC Output Filter
- Internally Generated 250-kHz Switching Frequency Eliminates Capacitor & 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 & Eliminates Bypass Capacitor
- Improved CMRR Eliminates Two Input Coupling Capacitors
Space Saving Package
- 3 mm × 3 mm QFN package (DRB)
- 2.5 mm × 2.5 mm MicroStarJunior™ BGA Package (ZQY)
- 3 mm x 5 mm MSOP PowerPAD™ Package (DGN)
Use TPA2006D1 for 1.8 V Logic Compatibility on Shutdown Pin

产品应用

Ideal for Wireless or Cellular Handsets and PDAs

产品说明

The TPA2005D1 is a 1.4-W high efficiency filter-free class-D audio power amplifier in a MicroStar Junior™ BGA, QFN, or MSOP package that requires only three external components.

Features like 84% efficiency, –71-dB PSRR at 217 Hz, improved RF-rectification immunity, and 15 mm2 total PCB area make the TPA2005D1 ideal for cellular handsets. A fast start-up time of 9 ms 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.

The TPA2005D1 has short-circuit and thermal protection.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPA2005D1	HVSSOP (8)	3.00 mm × 3.00 mm
	VSON (8)	3.00 mm x 3.00 mm
	BGA MICROSTAR JUNIOR (15)	2.50 mm x 2.50 mm

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