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AB类音频功放
意法半导体推出了最广泛的AB类音频放大器，提供了：
•单声道、立体声和多通道解决方案（通道多达4条）
•广泛的输出功率选项
•单端和BTL工作模式
•多种适于插入式和表面贴装应用的封装选项
| Part Number |
General Description |
Marketing Status |
Package | Supply Voltage(Vcc) min (V) | Supply Voltage(Vcc) max (V) |
Supply Mode |
Output Channels typ () |
Load typ (Ω) |
THD (%) typ () |
| STA540 |
4 x 13 W dual/quad power amplifier |
Active | MW 15L | 8 | 22 | single | 4 | 8 | 0.02 |
| TDA7269A |
2 x 14W stereo amplifier with mute and standby |
Active | MW 11L | 5 | 20 | split | 2 | 8 | 0.7 |
| TDA7265 |
25 W + 25 W stereo amplifier with mute and standby |
Active | MW 11L | 5 | 25 | split | 2 | 8 | 0.7 |
| TDA7266D | 5 W + 5 W dual bridge amplifier | Active | PowerSO-20 | 3.5 | 12 | single | 2 | 8 | 0.2 |
| TDA7266P | 3 W + 3 W dual bridge amplifier | Active | PowerSSO 24 | 3.5 | 12 | single | 2 | 8 | 0.2 |
D类音频功放
意法半导体的模拟开关模式D类功率放大器提高了效率，从而降低了功耗和对大散热器的需要。’
D类功率放大器产品采用单声道和立体声配置，功率介于2 W和2 x 160 W之间，提供了：
•过滤和无过滤操作
•可外部同步
•表面贴装PSO和PSSO36封装实现了空间优化
| Part Number | General Description |
Marketing Status |
Package | Supply Voltage(Vcc) min (V) |
Supply Voltage(Vcc) max (V) |
Output Power(Pout) (@10% THD, typ. load) max (W) |
Load typ (Ω) |
Input Channels typ () |
Output Stage Mode |
| TDA7491HV | 20W+20W dual BTL class-D audio amplifier | Active | PowerSSO 36 | 5 | 18 | 20 | 8 | 2 | PWM |
| TDA7491LP | 5W+5W dual BTL class-D audio amplifier | Active | PowerSSO 36 | 5 | 14 | 5 | 8 | 2 | PWM |
| TDA7491MV | 25W mono BTL class-D audio amplifier | Active | PowerSSO 36 | 5 | 18 | 25 | 6 | 1 | PWM |
| TDA7491P | 10W+10W dual BTL class-D audio amplifier | Active | PowerSSO 36 | 5 | 18 | 10 | 6 | 2 | PWM |
| TDA7492 | 50 W + 50 W dual BTL class-D audio amplifier | Active | PowerSSO 36 | 10 | 26 | 50 | 6 | 2 | PWM |
| TDA7492MV | 50W Mono BTL class-D audio amplifier | Active | PowerSSO 36 | 10 | 26 | 50 | 6 | 1 | PWM |
| TDA7498 | 100W+100W dual BTL Class-D audio amplifier | Active | PowerSSO 36 | 10 | 36 | 100 | 6 | 2 | PWM |
数字音频功放
针对输出功率范围更高的应用，意法半导体推出了采用FFX技术的最新一代数字音频功率放大器。 意法半导体的音频功率解决方案融合了全数字和高效且灵活的放大技术，适用于各种消费类音频产品，并且具有以下特性：
•二进制和三进制FFX高效工作模式
•配置灵活： 1.0、2.0、2.1和4.0通道
•PSO36和PSS036表面贴装散热型封装实现了最佳散热性能
| 产品编号 | 状态 | 描述 | |||||||
| STA323W | Active | 2.1-channel high-efficiency digital audio system | |||||||
| STA339BW | Active | 2.1-channel high-efficiency digital audio system | |||||||
| STA339BWS | Active | 2.1 channel high efficiency digital audio system | |||||||
| STA350BW | Active | Sound Terminal 2.1-channel high-efficiency digital audio system | |||||||
| AIS326DQ | Active | Digital output motion sensor for automotive applications low-power high performance 3-axes accelerometer | |||||||
| AIS328DQ | Active | High-performance ultra low-power 3-axis accelerometer for automotive applications | |||||||