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TPA3221是一款可在全功率,空闲和待机状态下实现高效操作的高功率D类放大器。该器件采用具有高达100kHz带宽的闭环反馈,从而在音频频带内提供低失真并提供出色的质量。该器件以AD或低空闲电流HEAD(高效AD模式)调制运行,并可为4Ω负载提供2 x 105W的功率,或为2Ω负载TPA3221具有单端或差分模拟输入接口,该接口最高支持2V RMS 并具有四种可选增益:18dB,24dB,30dB和34dB.TPA3221还实现了大于90%的效率,低空闲功率(< 0.25 W)和超低待机功耗(< 0.1 W)。这是通过使用70mΩMOSFET,经优化的栅极驱动方案和低功耗操作模式实现的.TPA3221包含用于轻松集成在单电源系统中的内置LDO。为了进一步简化设计,该级器件集成了重要的保护功能,其中包括欠压,过压,逐周期电流限制,短路,波检测,过热警告和关断以及直流扬声器保护。
所有商标均为其各自所有者的财产。
Audio Input Type |
Architecture |
Speaker Channels (Max) |
Power Stage Supply (Min) (V) |
Power Stage Supply (Max) (V) |
Output Power (W) |
Load (Min) (ohms) |
SNR (dB) |
THD + N @ 1 kHz (%) |
Iq (Typ) (mA) |
Control Interface |
Closed/Open Loop |
Analog Supply (V) (Min) |
Analog Supply (V) (Max) |
Power to Parallel Bridge Tied Load (Max) (W) |
PSRR (dB) |
Operating Temperature Range (C) |
Rating |
TPA3221 | TPA3220 | TPA3244 | TPA3245 | TPA3250 | TPA3251 | TPA3255 |
---|---|---|---|---|---|---|
Analog Input | Analog Input | Analog Input | Analog Input | Analog Input | Analog Input | Analog Input |
Class-D | Class-D | Class-D | Class-D | Class-D | Class-D | Class-D |
Stereo | Stereo | 4 | 4 | 4 | 4 | 4 |
7 | 7 | 12 | 12 | 12 | 12 | 18 |
30 | 30 | 30 | 30 | 36 | 36 | 53.5 |
100 | 100 | 100 | 115 | 130 | 175 | 315 |
1 | 1 | 1.5 | 1.5 | 1.5 | 1.5 | 4 |
108 | 108 | 110 | 112 | 110 | 111 | 112 |
0.02 | 0.02 | 0.005 | 0.005 | 0.005 | 0.005 | 0.006 |
15 | 15 | 15 | 12.5 | 12.5 | 24 | |
Hardware | Hardware | Hardware | Hardware | Hardware | Hardware | Hardware |
Closed | Closed | Closed | Closed | Closed | Closed | Closed |
5 | 5 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 |
30 | 30 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 |
200 | 200 | 160 | 230 | 189 | 355 | 600 |
60 | 60 | 60 | 60 | 60 | 80 | 80 |
-40 to 85 | -40 to 85 | 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 |
Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |