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TAS2557器件是一款先进的D类音频放大器,也是一套功能完备的片上系统(SoC)。该器件具有超低噪声音频DAC以及具备扬声器电压和电流感测反馈的D类功率放大器。片上低延迟DSP支持德州仪器(TI)的SmartAmp扬声器保护算法,能够在维持扬声器处于安全状态的同时,最大限度提高扬声器的音量。
该器件可通过I2S输出轻松与任何处理器搭配使用,而且使用两个TAS2557器件时能够实现立体声。该器件可针对不同的扬声器单独进行调试,这使得客户能够在保持原有外形此外,无论在哪种工作模式下,TAS2557均能以15.9μV超低ICN对语音和音频单独进行动态调试,从而使用接收器/扬声器的实现成为可能p>
H类升压转换器生成D类放大器电源轨。如果音频信号仅需要较低的D类输出功率,则该压转换器会通过禁用V BAT 并将其直接连接至D类放大器电源来提高系统效率。当需要较高的音频输出功率时,多级升压功能会迅速激活信号跟踪,从而为负载提供额外的电压。
所有商标均为其所有各自所有者。
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) |
PSRR (dB) |
Operating Temperature Range (C) |
Rating |
TAS2557 | TAS2552 | TAS2553 | TAS2555 | TAS2559 | TAS2560 | TAS2770 | TPA2015D1 |
---|---|---|---|---|---|---|---|
Digital Input | Analog Input Digital Input | Analog Input Digital Input | Digital Input | Digital Input | Digital Input | Digital Input | Analog Input |
Class-D Boosted Smart Amp | Class-D Boosted Smart Amp | Class-D Boosted | Class-D Boosted Smart Amp | Class-D Boosted Smart Amp | Class-D Boosted Smart Amp | Smart Amp | Class-D Boosted |
Mono | Mono | Mono | Mono | Mono | Mono | Mono | Mono |
2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 4.5 | 2.3 |
5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 16 | 5.2 |
5.7 | 4 | 2.8 | 5.7 | 5.7 | 5.6 | 20 | 2 |
4 | 6 | 6 | 4 | 4 | 4 | 4 | 8 |
111 | 94 | 94 | 111 | 111 | 111 | 108 | 95 |
0.0035 | 0.1 | 0.9 | 0.02 | 0.0035 | 0.004 | 0.007 | 0.07 |
3.9 | 6.54 | 7.1 | 3 | 3.9 | 3.2 | 7.07 | 1.7 |
I2C SPI | I2C | I2C | I2C SPI | I2C SPI | I2C | I2C | GPIO |
Closed | Closed | Closed | Closed | Closed | Closed | Closed | Closed |
2.9 | 2.7 | 2.7 | 2.95 | 2.9 | 2.9 | 4.5 | 2.3 |
5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 16 | 5.2 |
110 | 75 | 75 | 110 | 110 | 110 | 90 | 85 |
-40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |