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1. General description
The TDA8950 is a high efficiency class-D audio power amplifier. The typical output power
is 2 × 150 W with a speaker load impedance of 4 Ω.
The TDA8950 is available in the HSOP24 power package and DBS23P power package.
The amplifier operates over a wide supply voltage range from ±12.5 V to ±40 V and
consumes a low quiescent current.
2. Features
■ Pin compatible with TDA8920B for both HSOP24 and DBS23P packages
■ Symmetrical high operating supply voltage range from ±12.5 V to ±40 V
■ Stereo full differential inputs, usable as stereo Single-Ended (SE) or mono Bridge-Tied
Load (BTL) amplifier
■ High output power at typical applications:
◆ SE 2 × 150 W, R
L
=4Ω (V
P
= ±37 V)
◆ SE 2 × 170 W, R
L
=4Ω (V
P
= ±39 V)
◆ SE 2 × 100 W, R
L
=6Ω (V
P
= ±37 V)
◆ BTL 1 × 300 W, R
L
=8Ω (V
P
= ±37 V)
■ Low noise in BTL due to BD-modulation
■ Smooth pop noise-free start-up and switch down
■ Zero dead time Pulse Width Modulation (PWM) output switching
■ Fixed frequency
■ Internal or external clock switching frequency
■ High efficiency
■ Low quiescent current
■ Advanced protection strategy: voltage protection and output current limiting
■ Thermal foldback
■ Fixed gain of 30 dB in SE and 36 dB in BTL
■ Full short-circuit proof across load
3. Applications
■ DVD
■ Mini and micro receiver
■ Home Theater In A Box (HTIAB) system
■ High power speaker system
TDA8950
2 × 150 W class-D power amplifier
Rev. 01 — 9 September 2008 Preliminary data sheet