Overview
●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.
●MoreLess
●## 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
●## Target Applications
● DVD
● Mini and micro receiver
● Subwoofers
● Home Theater In A Box (HTIAB) system
● High-power speaker system
● Public Address (PA) system
●## Features
