TAS5815中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Support multiple output configurations

– 2 × 30W in 2.0 mode (6Ω, 21V, THD+N=1%)

– 58W in Mono mode (3Ω, 21V, THD+N=1%)

? Excellent audio performance:

– THD+N ≤ 0.03% at 1W, 1kHz, PVDD = 12V

– SNR ≥ 110dB (A-weighted), ICN ≤ 45μVRMS

? Efficient class-D operation:

– > 90% Power efficiency, 120mΩ RDS(on)

? Flexible power supply configurations

– PVDD: 4.5V to 26.4V

– DVDD and I/O: 1.8V or 3.3V

? Flexible audio I/O:

– Supports 32, 44.1, 48, 88.2, 96kHz sample

rates

– I2S, LJ, RJ, TDM

– SDOUT for audio monitoring, sub-channel or

echo cancellation

– Support 3-wire digital audio interface (no MCLK

required)

– Supports stereo bridge-tied or mono parallel

bridge-tied loads (BTL and PBTL)

– Supports 8 steps Class-H DC-DC control.

? Enhanced audio processing:

– Sample rate convertor

– 96kHz processor sampling

– DC blocking, 2 ×15 BQs, DPEQ, THD manager

– 4th Order 2-band DRC + AGL

– Over temperature fold back

– 8 Class-H DC-DC control steps with 2.5ms look

ahead buffer for BTL mode and 5ms for PBTL

mode at 48k sample rate.

? Excellent integrated self-protection:

– Over-current error (OCE)

– Over-temperature warning (OTW)

– Over-temperature error (OTE)

– Under or over-voltage lock-out (UVLO/OVLO)

? Easy system integration

– I2C Software Control

– Reduced solution size

? Less passives required compare to open

loop devices

? Ultra low EMI with latest EMI technology

? No large inductors required for most

applications

2 Applications

? Sounds bars, PC audio

? Wireless, Bluetooth speakers

? DTV, HDTV, UHD and multi-purpose monitors

3 Description

The TAS5815 is a high efficiency digital input Class-

D audio amplifier with integrated audio processor

with up to 96kHz architecture, adaptive modulation

schemes based on output power and low RDS(on)=

120mΩ. It also supports DPEQ process for easy

tuning.

The DPEQ is used to mix the audio signals through

two signal paths (low level and high level). These 2

paths are used with separate equalization properties.

A third path monitors the incoming audio and

determines the thresholds and mixing characteristics

between these two parts. Thus, the mix between the

two high- and low-level channels is dynamic in nature

and depends on the incoming audio.

The high-performance closed loop architecture and

wide-switching frequency range reduces the solution

size by reducing passive components and minimize

the inductor size in most applications. TAS5815 has

an integrated audio processor with up to 96kHz

architecture support advanced process flow. The

device has an integrated a proprietary algorithm

called Class-H. The Class-H algorithm detects the

upcoming audio power demand and provides a PWM

control signal for the former DC-DC converter via

the feedback pin (FB). This feature used to increase

the system-level efficiency and reduce total power

consumption. The TAS5815 supports up to 2.5ms of

delay buffer to look ahead at the audio signal and

prevents audio clipping distortion.

This device also supports speaker load open/short

detection and report detection result with register

report.