General description
The TDA8954J/N1,112 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 TDA8954J/N1,112 is supplied with two diagnostic pins for monitoring the status of Thermal Fold Back (TFB), Over Current Protection (OCP) and other protection circuits.
Features
■High output power in typical applications:
◆SE2×210W, RL=4Q(V0D=41V; Vss=-41V)
◆SE2×235W, RL=3Q(V00=39V; Vss=-39V)
◆SE2×150W, RL=6Q(V00=41V; VsS=-41V)
◆BTL 1×420W, RL=8Q(V00=41V; Vss=-41V)
■Symmetrical operating supply voltage range from ±12.5 V to ±42.5V
■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
■Mini and micro receiver
■Subwoofers
■Home Theater In A Box (HTIAB)system
■High-power speaker system
■Public Address(PA)system
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
- DVD
- Mini and micro receiver
- Subwoofers
- Home Theater In A Box (HTIAB) system
- High-power speaker system
- Public Address (PA) system
(Picture: Pinout)
