Description
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.
THD = 10% (Typ)
- Efficiency With an 😯 Speaker:
- 84% at 400 mW
- 79% at 100 mW
- 2.8-mA Quiescent Current
- 0.5-µA Shutdown Current
😯 Speaker (2.5 V = VDD = 5.5 V) and a
4-O Speaker (2.5 V = VDD = 4.2 V)
- 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
- 3 mm × 3 mm QFN package (DRB)
- 2,5 mm × 2,5 mmMicroStar Junior™
BGA Package (ZQY) - 3 mm x 5 mm MSOP PowerPAD™ Package (DGN)
- TPA2010D1 Available in 1,45 mm × 1,45 mm WCSP (YZF)
- Ideal for Wireless or Cellular Handsets and PDAs
