Turnkey Open Loop Digital Class-D Amplifier Module
This complete stand-alone 200-watt-per-channel Class-D amplifier module is designed for manufacturers of powered loudspeakers and stand-alone stereo and multi-channel amplifiers. GaN Systems GS-EVM-AUD-AMPOL1-GS is designed as two independent half-bridge outputs, for use in both stereo and single-channel applications. The GaN open loop approach provides an ideal switching form for Class D amplifiers. The high performance of switching signals delivers a dual feedback loop that provides better performance than a single loop / closed filter.

Features & Benefits

• High-performance Class-D Audio Amplifier reference design
• Enables smaller and more efficient Class-D audio systems
• Superior sounding and very high audio quality
• Reduction in system size and weight
• 50W / Channel x 4 Half-Bridge into 8Ω
• 200W / Channel x 2 BTL into 8Ω
• Digital I²S Audio Input
• Integrated Digital Coaxial S/PDIF Coaxial Audio Input
• Frequency response: 20Hz to 20kHz, +0.0/- 0.2dB
• +/- 32V_DC Power Supply requirement
• Fully integrated programmable DSP solution
• SNR & DNR greater than 114dB
• “THD+N” less than 0.1%
• No heat sink required
• Efficiency higher than 96%
• Safe and stable design with graceful protection features
• Easy product system integration
• Compatible with GaN Systems SMPS GS-EVB-AUD-SMPS2-GS complete LLC design + PFC SMPS that provides 20% volume shrink and 5% BoM cost reduction.