STA540 Datasheet

4 x 13 W dual/quad power amplifier


The STA540 is a 4-channel, class AB audio amplifier designed for high quality sound applications. The amplifiers have single-ended outputs with integrated short-circuit protection, thermal protection and diagnostic functions. The chip is housed in the 15-pin Multiwatt ECOPACK® Pb-free package which is RoHS (2002/95/EC) compliant. STA540 Features • High output power capability – 2x 38 W into 4 Ω at 18 V, 1 kHz, 10%THD – 2x 34 W into 8 Ω at 22 V, 1 kHz, 10%THD – 2x 24 W into 4 Ω at 14.4 V, 1 kHz, 10%THD – 2x 15 W into 8 Ω at 16 V, 1 kHz, 10%THD – 4x 13 W into 2 Ω at 15 V, 1 kHz, 10%THD – 4x 11 W into 4 Ω at 18 V, 1 kHz, 10%THD – 4x 7 W into 4 Ω at 14.4 V, 1 kHz, 10%THD• Minimum external components count: – no bootstrap capacitors – no Boucherot cells – internally fixed gain 20 dB• Standby function (CMOS compatible)• No audible pop during standby operations• Diagnostic facilities: – clip detector – output to GND short-circuit detector – output to VS short-circuit detector – soft short-circuit check at turn-on – thermal shutdown warning


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