Texas Instruments TAS25xx数字输入D类扬声器放大器

德州仪器 TAS2505和TAS2521是数字输入D类扬声器放大器。TI TAS2505支持24位数字I²S数据单声道回放。除了驱动最高4Ω的扬声器放大器，该器件还特有一个单声道头戴式耳机驱动器和一个可编程数字信号处理块。可对数字音频数据格式进行设置，实现在主、从、DSP和TDM模式下与常见的音频标准协议（I²S，左/右平衡）兼容。TI TAS2521支持24位数字I²S数据单声道回放。除了驱动最高4Ω的扬声器放大器，该器件还特有一个单声道头戴式耳机驱动器和一个完全可编程的miniDSP，用于进行信号处理。可对数字音频数据格式进行设置，实现在主、从、DSP和TDM模式下与常见的音频标准协议（I²S，左/右平衡）兼容。这些TI音频放大器适用于便携式音频设备、便携式导航设备、白色家电等。

An on-chip PLL provides the high-speed clock needed by the digital signal processing block. The volume level can be controlled by register control. The audio functions are controlled using the I2C serial bus or SPI bus. The TAS2505/TAS2505-Q1 includes an onboard LDO that runs off the speaker power supply to handle all internal device analog and digital power needs. The included power-on-reset circuit reliably resets the device to its default state so no external reset is required for normal usage. The device does have a reset pin for more complex system initialization needs. The TAS2505-Q1 devices are AEC-Q100 qualified for automotive applications.

特性

Digital Input Mono Speaker Amp
Supports 8kHz to 96kHz Sample Rates
Mono Class-D BTL Speaker Driver (2W into 4Ω or 1.7W into 8Ω)
Mono Headphone Driver
Two Single-Ended Inputs With Output Mixing and Level Control
Embedded Power-On-Reset
Integrated LDO
Programmable Digital Audio Processing Blocks for Bass Boost, Treble, EQ With up to Six Biquads for Playback
Integrated PLL Used for Programmable Digital Audio Processing Blocks

I²S, Left-Justified, Right-Justified, DSP, and TDM Audio Interfaces
I²C Control and SPI control With Auto-Increment
Full Power-Down Control
Power Supplies
- Analog: 1.5V to 1.95V
- Digital Core: 1.65V to 1.95V
- Digital I/O: 1.1V to 3.6V
- Class-D: 2.7V to 5.5V (SPKVDD ≥ AVDD)
24-Pin VQFN Package (4mm×4mm)