TAS2555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 TAS2555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尺寸设计的基础上增添产品价值。此外,无论在哪种工作模式下,TAS2555均能以 15.9µV 超低 ICN 对语音和音频单独进行动态调试,从而使得接收器/扬声器的实现成为可能。
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,则该升压转换器会通过禁用 VBAT 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。
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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 (Min) (V) |
Analog supply (Max) (V) |
Sampling Rate (Max) (kHz) |
PSRR (dB) |
Operating temperature range (C) |
Rating |
TAS2555 | TAS2552 | TAS2553 | TAS2557 | TAS2559 | TAS2560 |
---|---|---|---|---|---|
Digital Input |
Analog Input Digital Input |
Analog Input Digital Input |
Digital Input | Digital Input | Digital 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 |
Mono | Mono | Mono | Mono | Mono | Mono |
2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 |
5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
5.7 | 4 | 2.8 | 5.7 | 5.7 | 5.6 |
4 | 6 | 6 | 4 | 4 | 4 |
111 | 94 | 94 | 111 | 111 | 111 |
0.02 | 0.1 | 0.9 | 0.0035 | 0.0035 | 0.004 |
3 | 6.54 | 7.1 | 3.9 | 3.9 | 3.2 |
I2C SPI |
I2C | I2C |
I2C SPI |
I2C SPI |
I2C |
Closed | Closed | Closed | Closed | Closed | Closed |
2.95 | 2.7 | 2.7 | 2.9 | 2.9 | 2.9 |
5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
96 | 192 | 192 | 96 | 96 | 96 |
110 | 75 | 75 | 110 | 110 | 110 |
-40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
立即下单 | 立即下单 | 立即下单 | 立即下单 | 立即下单 | 立即下单 |