Description
The TDA8953 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 x 210 W into a 4 O load in a stereo Single-Ended (SE) application, or 1 x 420 W into an 8 O load in a mono Bridge-Tied Load (BTL) application. It combines the benefits of Class D efficiency (˜93 % into a 4 O 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.
- High output power in typical applications:
- SE 2 x 210 W, RL = 4 O (VDD = 41 V; VSS = -41 V)
- SE 2 x 235 W, RL = 3 O (VDD = 39 V; VSS = -39 V)
- SE 2 x 150 W, RL = 6 O (VDD = 41 V; VSS = -41 V)
- BTL 1 x 420 W, RL = 8 O (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
- 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
