TAS5103 - 15-W Stereo Digital Amplifier Power Stage

The TAS5102/TAS5103 are integrated stereo digital amplifier power stages with an advanced protection system. The TAS5102/TAS5103 are capable of driving an 8-Ω bridge-tied load (BTL) at up to 20 W/15 W per channel with low integrated noise at the output, low THD+N performance, and low idle power dissipation.

A low-cost, high-fidelity audio system can be built using a TI chipset, comprising a modulator (e.g., TAS5086) and the TAS5102/TAS5103. This system only requires a simple passive LC demodulation filter to deliver high-quality, high-efficiency audio amplification with proven EMI compliance. These devices require two power supplies, at 3.3 V for VREG, and up to 23 V for PVDD. The TAS5102/TAS5103 does not require power-up sequencing due to internal power-on reset. The efficiency of this digital amplifier is greater than 90% into 8 Ω, which enables the use of smaller power supplies and heatsinks.

The TAS5102/3 has an innovative protection system integrated on chip, safeguarding the device against a wide range of fault conditions that could damage the system. These safeguards are short-circuit protection, overcurrent protection, undervoltage protection, and overtemperature protection. The TAS5102/TAS5103 has a new proprietary current-limiting circuit that reduces the possibility of device shutdown during high-level music transients.

• 2×20 W at 10% THD+N Into 8-Ω BTL at 18 V (With Heatsink for TAS5102)
• 2×15 W at 10% THD+N Into 8-Ω BTL at 15.5 V for TAS5103
• 2×10 W at 10% THD+N Into 8-Ω BTL at 13 V
• >100-dB SNR (A-Weighted)
• <0.1% THD+N at 1 W
• Thermally Enhanced Package: 32-pin HTSSOP
  • DAD (TAS5102) Pad Up
  • DAP (TAS5103) Pad Down
• High-Efficiency Power Stage (>90%) With 180-Ω Output MOSFETs
• Wide PVDD Range from 8V to 23V
• Power-On Reset for Protection on Power Up Without Any Power-Supply Sequencing
• Integrated Self-Protection Circuits Including Undervoltage, Overtemperature, Overcurrent, Short Circuit
• Built-In Regulator for Gate Drive Supply
• Error Reporting
• EMI Compliant When Used With Recommended System Design
• APPLICATIONS
  • Televisions
  • Mini/Micro Audio Systems
  • DVD Receivers
  • Home Theaters