具有可变增益和短路保护的 2.5W 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) | 2.5 |
| SNR (dB) | 97 |
| THD + N @ 1 kHz (%) | 0.18 |
| Iq (Typ) (mA) | 3.4 |
| Control interface | Hardware |
| Closed/open loop | Open |
| Analog supply (Min) (V) | 2.5 |
| Analog supply (Max) (V) | 5.5 |
| PSRR (dB) | 75 |
| Operating temperature range (C) | -40 to 85 |
- Maximum Battery Life and Minimum Heat
- Efficiency with an 8-Ω Speaker:
- 88% at 400 mW
- 80% at 100 mW
- 2.8-mA Quiescent Current
- 0.5-μA Shutdown Current
- Efficiency with an 8-Ω 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 (–75 dB) 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
- Optimized PWM Output Stage Eliminates LC
- Die-size ball grid (DSBGA)
- NanoFree? Lead-Free (YZF)
- NanoStar? SnPb (YEF)
The TPA2010D1 (sometimes referred to as TPA2010) is a 2.5-W high efficiency filter-free class-D audio power amplifier (class-D amp) in a 1,45 mm × 1,45 mm die-size ball grid array (DSBGA) that requires only three external components.
Features like 88% efficiency, –75-dB PSRR, improved RF-rectification immunity, and 8 mm2 total PCB area make the TPA2010D1 (TPA2010) class-D amp ideal for cellular handsets. A fast start-up time of 1 ms with minimal pop makes the TPA2010D1 (TPA2010) ideal for PDA applications.
In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the TPA2010D1. The TPA2010D1 allows independent gain while summing signals from separate sources and has a low 36 μV noise floor that is A-weighted.
