Digital Audio Power Amplifiers

For the higher output power range, ST offers its latest generation of digital audio power amplifiers, based on our FFX technology. Combining all-digital and high-efficiency full flexible amplification, ST's audio power solutions can be used in a wide range of consumer audio products and offer the following features:

  • Binary and ternary FFX high-efficiency operating modes
  • Flexible configuration possible between  1.0, 2.0, 2.1 and 4.0 channels
  • PSO36 and PSS036 surface mount slug up and down packaging for optimal heat dissipation 

STA518 quad power half-bridge digital audio amplifier

STA518 is a monolithic quad half bridge stage in Multipower BCD Technology. The device can be used also as dual bridge or reconfigured, by connecting CONFIG pin to Vdd pin, as single bridge with double current capability.
The device is particularly designed to make the output stage of a stereo All-Digital High Efficiency (DDX™) amplifier capable to deliver an output power of 24W x 4 channels @ THD = 10% at Vcc 30V on 4W load in single ended configuration. It can also deliver 50 + 50W @ THD = 10% at Vcc 29V as output power on 8W load in BTL configuration and 70W @ THD = 10% at Vcc 34V on 8W in single paralleled BTL configuration.