4 x 13 W dual / quad power amplifier, multiwatt-15

STA540, 4 x 13 W dual/quad power amplifier

Description
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.

Features
- High output power capability
- 2x 38 W into 4 Ohm at 18 V, 1 kHz, 10% THD
- 2x 34 W into 8 Ohm at 22 V, 1 kHz, 10% THD
- 2x 24W into 4 Ohm at 14.4 V, 1 kHz, 10% THD
- 2x 15 W into 8 Ohm at 16 V, 1 kHz, 10% THD
- 4x 13 W into 2 Ohm at 15 V, 1 kHz, 10% THD
- 4x 11 W into 4 Ohm at 18 V, 1 kHz, 10% THD
- 4x 7 W into 4 Ohm 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

Protection
- Output AC/DC short circuit
- Soft short-circuit check at turn-on
- Thermal cutoff/limiter to prevent chip from overheating
- High inductive loads
- ESD