音频放大器 2W Stereo APA With DC Volume Control
The TPA0142 is a stereo audio power amplifier in a 24-pin TSSOP thermally enhanced package capable of delivering 2.8 W of continuous RMS power per channel into 3- loads.
This device minimizes the number of external components needed, which simplifies the design and frees up board space for other features. When driving 1 W into 8- speakers, the TPA0142 has less than 0.22% THD+N across its specified frequency range.
Included within this device is integrated depop circuitry that virtually eliminates transients that cause noise in the speakers.
Amplifier gain is controlled by a dc voltage input on the VOLUME terminal. There are 31 discrete steps covering the range of 20 dB maximum volume setting to -40 dB minimum volume setting in 2-dB steps. When the VOLUME terminal exceeds 3.54 V, the device is muted. An internal input MUX allows two sets of stereo inputs to the amplifier. In notebook applications, where internal speakers are driven as BTL and the line outputs often headphone drive are required to be SE, the TPA0142 automatically switches into SE mode when the SE/BTL\ input is activated, and this effectively reduces the gain by 6 dB.
The TPA0142 consumes only 20 mA of supply current during normal operation. A shutdown mode reduces the supply current to less than 150 µA.
The PowerPAD package PWP delivers a level of thermal performance that was previously achievable only TO-220-type packages. Thermal impedances of approximately 35°C/W are truly realized in multilayer PCB applications. This allows the TPA0142 to operate at full power into 8- loads at ambient temperatures of 85°C.
供电电流 25 mA
电路数 1
耗散功率 2700 mW
静态电流 20.0 mA
输出功率 2.8 W
工作温度Max 85 ℃
工作温度Min -40 ℃
耗散功率Max 2700 mW
电源电压 4.5V ~ 5.5V
安装方式 Surface Mount
引脚数 24
封装 HTSSOP-24
长度 7.8 mm
宽度 4.4 mm
高度 1.15 mm
封装 HTSSOP-24
工作温度 -40℃ ~ 85℃ TA
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
TPA0142PWPR TI 德州仪器 | 当前型号 | 当前型号 |
TPA0142PWP 德州仪器 | 类似代替 | TPA0142PWPR和TPA0142PWP的区别 |