数据:
700-mW Mono Low-Voltage Audio Power Amplifier 数据表
TPA711是桥接负载(BTL)或单端(SE)音频功率放大器,专为低压应用而开发,内置扬声器和需要外接耳机操作。 TPA711采用3.3V电源供电,可为BTL 8提供250mW的连续功率 -
在整个语音频段频率下,负载小于0.6%THD + N.虽然该器件的特性为20 kHz,但其操作已针对窄带应用(如无线通信)进行了优化。在大多数应用中,BTL配置无需在输出端使用外部耦合电容,这对于小型电池供电设备尤为重要。 TPA711的一个独特功能是,当需要耳机驱动时,它允许放大器在运行时从BTL切换到SE 。这消除了复杂的机械开关或辅助设备,仅用于驱动外部负载。该器件具有关断功耗模式的关断模式,具有特殊的depop电路,可在退出关断模式时消除扬声器噪声。 TPA711采用8引脚SOIC和表面贴装PowerPAD MSOP封装,可将电路板空间减少50%,高度减少40%。
PowerPAD是德州仪器公司的商标。
| Audio Input Type |
| Architecture |
| Speaker Channels (Max) |
| Power Stage Supply (Min) (V) |
| Power Stage Supply (Max) (V) |
| Output Power (W) |
| Load (Min) (ohms) |
| THD + N @ 1 kHz (%) |
| Iq (Typ) (mA) |
| Control Interface |
| Closed/Open Loop |
| Analog Supply (V) (Min) |
| Analog Supply (V) (Max) |
| PSRR (dB) |
| Operating Temperature Range (C) |
| Rating |
| TPA711 | TPA701 | TPA721 | TPA741 | TPA751 |
|---|---|---|---|---|
| Analog Input | Analog Input | Analog Input | Analog Input | Analog Input |
| Class-AB | Class-AB | Class-AB | Class-AB | Class-AB |
| Mono | Mono | Mono | Mono | Mono |
| 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
| 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
| 8 | 8 | 8 | 8 | 8 |
| 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| 1.25 | 1.25 | 1.25 | 1.45 | 1.45 |
| Hardware | Hardware | Hardware | Hardware | Hardware |
| Closed | Closed | Closed | Closed | Closed |
| 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
| 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| 85 | 85 | 85 | 85 | 85 |
| -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| Catalog | Catalog | Catalog | Catalog | Catalog |
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