TDA8954TH/N1 NXP Integrated Circuits (ICs) – Jotrin Electronics

The TDA8954TH/N1 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 TDA8954TH/N1 is supplied with two diagnostic pins for monitoring the status of Thermal Fold Back (TFB), Over Current Protection (OCP) and other protection circuits.

Feature

• 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

Target Applications