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The TPA2005D1 is a 1.1-W high efficiency filter-free class-D audio power amplifier in a MicroStar Junior™BGA 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 TP2005D1 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 VRMS.
TPA2005D1 Maximum Ratings
TPA2005D1
UNIT
voltage, VDD
In active mode
0.3 V to 6 V
V
In SHUTDOWN mode
0.3 V to 7
V
VI Input voltage,
−0.3 V to VDD + 0.3
V
Continuous total power dissipation
See Dissipation Rating Table
TA Operating free-air temperature range
- 40°C to 85
°C
TJ Operating junction temperature range
40°C to 150
°C
Tstg Storage temperature range
65°C to 150
°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C
260
°C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
TPA2005D1 Features
` 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-A Shutdown Current ` 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 egulator Fully Differential Design Reduces RF Rectification and Eliminates Bypass Capacitor Improved CMRR Eliminates Two Input Coupling Capacitors
TPA2005D1 Typical Application
· Ideal for Wireless or Cellular Handsets and PDAs