TAS2553
- Analog or Digital Input Mono Boosted Class-D Amplifier
- 2.8 W into 8 Ω Load from 3.6 V Supply (1% THD+N)
- Efficiency of 86% at Rated Power
- I2S, Left-Justified, Right-Justified, DSP, PDM, and TDM
Input and Output Interface - Input Sample Rates from 8 kHz to 192 kHz
- High Efficiency Class-G Boost Converter
- Automatically Adjusts Class-D Supply
- Built-In Speaker Sense
- Measures Speaker Current and Voltage
- Measures VBAT and VBOOST Voltages
- Built-In Automatic Gain Control (AGC)
- Limits Battery Current Consumption
- Adjustable Class-D Switching Edge-Rate Control
- Power Supplies
- Boost Input: 3.0 V to 5.5 V
- Analog: 1.65 V to 1.95 V
- Digital I/O: 1.5 V to 3.6 V
- Thermal and Short-Circuit Protection
- I2C Interface for Register Control
- Stereo Configuration Using Two TAS2553s
- I2C Address Select Terminal (ADDR)
- 2.855 mm × 2.575 mm, 0.4 mm Pitch 30-Ball WCSP
The TAS2553 is a high efficiency Class-D audio power amplifier with advanced battery current management and an integrated Class-G boost converter. The device constantly measures the current and voltage across the load and provides a digital stream of this information.
The Class-G boost converter generates the Class-D amplifier supply rail. During low Class-D output power, the boost improves efficiency by deactivating and connecting VBAT directly to the Class-D amplifier supply. When high power audio is required, the boost quickly activates to provide significantly louder audio than a stand-alone amplifier connected directly to the battery.
The AGC automatically adjusts Class-D gain to reduce battery current at end-of-charge voltages, preventing output clipping, distortion and early system shutdown. The fixed gain is adjustable via I2C. The gain range is –7 dB to +24 dB in 1 dB steps.
In addition to a differential mono analog input, the TAS2553 has built-in a 16-bit D/A converter used with a digital input. Moving the D/A converter from the digital host processor into the integrated amplifier process provides better dynamic performance at lower system cost. Additionally, since the PCB routing is digital rather than analog, sensitivity to external perturbations such as GSM frame-rate noise is decreased at the system level.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TAS2553 2.8-W Class-D Mono Audio Amplifier with Class-G Boost and Speaker Sense datasheet (Rev. B) | PDF | HTML | 2014/2/26 | ||
| 應用說明 | Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) | 2019/8/26 | ||||
| 應用說明 | AN-1849 An Audio Amplifier Power Supply Design (Rev. C) | 2019/6/27 | ||||
| 應用說明 | PLL and Clocking Configuration for Audio Devices | 2019/3/26 | ||||
| 應用說明 | AN-1737 Managing EMI in Class D Audio Applications (Rev. A) | 2013/5/1 |
設計與開發
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TAS2552EVM — TAS2552 4W D 類音訊功率放大器評估模組
TAS2552EVM 是一款具有 IV 回饋的升壓 D 類單聲道放大器 USB 音訊放大器。與 TAS2552 控制軟體以及客戶提供的喇叭和電源配合使用，可輕鬆評估 TAS2552 音訊放大器。TAS2552 控制軟體與 Windows XP、Windows Vista、Windows 7 和 Windows 8 作業系統相容。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YFF) | 30 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。