具有自动恢复短路保护的 3.2W 单声道、模拟输入 D 类音频放大器
| Audio input type | Analog Input |
| Architecture | Class-D |
| Speaker channels (Max) | Mono |
| Power stage supply (Max) (V) | 5.5 |
| Power stage supply (Min) (V) | 2.5 |
| Load (Min) (ohms) | 4 |
| Output power (W) | 3.2 |
| SNR (dB) | 95 |
| THD + N @ 1 kHz (%) | 0.23 |
| Iq (Typ) (mA) | 1.8 |
| Control interface | Hardware |
| Closed/open loop | Open |
| Analog supply (Min) (V) | 2.5 |
| Analog supply (Max) (V) | 5.5 |
| PSRR (dB) | 86 |
| Operating temperature range (C) | -40 to 85 |
- Powerful Mono Class-D Amplifier
- 3.24 W (4 Ω, 5 V, 10% THDN)
- 2.57 W (4 Ω, 5 V, 1% THDN)
- 1.80 W (8 Ω, 5 V, 10% THDN)
- 1.46 W (8 Ω, 5 V, 1% THDN)
- Integrated Feedback Resistor of 300 kΩ
- Integrated Image Reject Filter for DAC Noise
Reduction - Low Output Noise of 20 μV
- Low Quiescent Current of 1.5 mA
- Auto Recovering Short-Circuit Protection
- Thermal Overload Protection
- 9-Ball, 1.21mm × 1.16 mm 0.4 mm Pitch DSBGA
- APPLICATIONS
- Wireless or Cellular Handsets and PDAs
- Portable Navigation Devices
- General Portable Audio Devices
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The TPA2011D1 is a 3.2-W high efficiency filter-free class-D audio power amplifier (class-D amp) in a 1.21?mm × 1.16 mm wafer chip scale package (DSBGA) that requires only three external components.
Features like 95% efficiency, 86-dB PSRR, 1.5 mA quiescent current and improved RF immunity make the TPA2011D1 class-D amp ideal for cellular handsets. A fast start-up time of 4 ms with no audible turn-on pop makes the TPA2011D1 ideal for PDA and smart-phone applications. The TPA2011D1 allows independent gain while summing signals from separate sources, and has a low 20 μV noise floor.
