TAS2574数据手册TI中文资料规格书

描述 Description

The TAS2574 is a digital input Class-D audio amplifier with an integrated Boost for higher power delivery in battery-operated systems. The device has integrated speaker voltage and current sense (IV-Sense) for real-time monitoring of the loudspeakers. IV-sense data can be used to run speaker protection algorithms on a host DSP to enable high output SPL while keeping speakers in a safe operating region.

The device is optimized for delivering the best battery life for real use cases of Music playback and Voice calls. Advanced efficiency optimization features like Class-H, Y-bridge and algorithms enable the device to produce best-in-class efficiency across all power regions of operation. The Class-D amplifier is capable of delivering 8.5W output power using the integrated Class-H 15V Boost.

A battery tracking peak voltage limiter and a battery voltage monitor ADC enables advanced battery monitoring algorithms on the host processor to manage peak output power delivery while avoiding any audio distortion when battery capacity is depleting.

Up to four devices can share a common bus via I2S/TDM + I2C interfaces.

特性 Features

Powerful class-D amplifier

8.5W 1% THD+N

15V boost with 5.1A max current limit





Best in class efficiency

Upto 90% efficiency at system level

4.8mW idle channel power

Integrated Y-bridge

Advanced 33mV step size class-H boost





High performance audio channel

4.2µV A-wt. idle channel noise

114dB Dynamic Range

-90dB THDN

Low EMI performance





Advanced integrated features

Integrated Speaker IV sense

Signal detection high efficiency modes

High accuracy voltage monitor & temp sensor

Programmable battery input current limit





Ease of use features

1cell, 2cell and 3cell Li-ion battery support

Clock based power up/down

Auto clock rate detection: 16kHz to 192kHz

Integrated ultrasonic tone and chirp generator

External 14V PVDD supply support

MCLK free operation

Thermal and over current protection

Programmable drive strength IO buffers





Power Supplies and user interface

Battery Voltage: 1.8V to 5.5V

VDD: 1.65V to 1.95V

IOVDD: 1.2V or 1.8V

I2S/TDM: 8 channels

I2C: 4 selectable addresses





WCSP package