TPA3221
Overview
TPA3221 is a high-power Class-D amplifier that enables efficient operation at full-power, idle and standby. The device features closed-loop feedback with a bandwidth up to 100 kHz, which provide.
- 1 Wide 7-V to 30-V Supply Voltage Operation
- Stereo (2 x BTL) and Mono (1 x PBTL) Operation
- Output Power at 10% THD+N - 105-W Stereo into 4 Ω in BTL Configuration - 112-W Stereo into 3 Ω in BTL Configuration - 208-W Mono into 2 Ω in PBTL Configuration
- Output Power at 1% THD+N - 88-W Stereo into 4 Ω in BTL Configuration - 100-W Stereo into 3 Ω in BTL Configuration - 170-W Mono into 2 Ω in PBTL Configuration
- 5-V Gate Drive or Built-in LDO for Optional SingleSupply Operation
- Closed-Loop Feedback Design - Signal Bandwidth up to 100 kHz for High- Frequency Content From HD Sources - 0.02% THD+N at 1 W into 4 Ω - 60-dB PSRR (BTL, No Input Signal) - <75-µV Output Noise (A-Weighted) - >108-dB SNR (A-Weighted) - AD or HEAD Modulation Schemes
- Low-Power Operating Modes - Standby Modes: Mute and < 1 mA Shutdown - Low Idle-Current HEAD Modulation Scheme - Single-Channel BTL Operation
- Multiple Input Options to Simplify Pre-Amp Design - Differential or Single-Ended Analog Inputs - Selectable Gains: 18 dB, 24 dB, 30 dB, 34 dB
- Integrated Protection: Undervoltage, Overvoltage, Cycle-by-cycle Current Limit, Short Circuit, Clipping Detection, Overtemperature Warning and Shutdown, and DC Speaker Protection
- 90% Efficient Class-D Operation (4 Ω)
