TDA8954TH 2x 150W Class-D Amp 90% Efficiency Low 0.01% THD Mute/Standby OT/SC Protection Wide ±12.5V to ±40V Supply Self-Guarding Outputs

TDA8954TH 2x 150W Class-D Amp 90% Efficiency Low 0.01% THD Mute/Standby OT/SC Protection Wide ±12.5V to ±40V Supply Self-Guarding Outputs

Features

High output power in typical applications:

  SE 2 × 210 W, RL = 4 Ω (VDD = 41 V; VSS = −41 V)

  SE 2 × 235 W, RL = 3 Ω (VDD = 39 V; VSS = −39 V)

  SE 2 × 150 W, RL = 6 Ω (VDD = 41 V; VSS = −41 V)

  BTL 1 × 420 W, RL = 8 Ω (VDD = 41 V; VSS = −41 V)

Symmetrical operating supply voltage range from ±12.5 V to ±42.5 V

Stereo full differential inputs, can be used as stereo SE or mono BTL amplifier

Low noise

Smooth pop noise-free start-up and switch off

2-pin diagnostics for protection circuits

Fixed frequency internal or external clock

High efficiency ≈93 %

Zero dead time switching

Low quiescent current

Advanced protection strategy: voltage protection and output current limiting

Thermal FoldBack (TFB) with disable functionality

Fixed gain of 30 dB in SE and 36 dB in BTL applications

Fully short-circuit proof across load

BD modulation in BTL configuration

Clock protection

Applications

 DVD

 Home Theater In A Box (HTIAB) system

 Mini and micro receiver

 High-power speaker system

 Subwoofers

 Public Address (PA) system

Description

The TDA8954 is a stereo or mono high-efficiency Class D audio power amplifier in a single IC featuring low power dissipation. It is designed to deliver up to 2 × 210 W into a 4 Ω load in a stereo Single-Ended (SE) application, or 1 × 420 W into an 8 Ω load in a mono Bridge-Tied Load (BTL) application.

It combines the benefits of Class D efficiency (≈93 % into a 4 Ω load) with audiophile sound quality comparable to that associated with Class AB amplification.

The amplifier operates over a wide supply voltage range from ±12.5 V to ±42.5 V and features low quiescent current consumption.

The TDA8954 is supplied with two diagnostic pins for monitoring the status of Thermal Fold Back (TFB), Over Current Protection (OCP) and other protection circuits.

INFORMATION

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