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DATA SHEET
TAS2559 5.7-W Class-D mono audio amplifier with class-H boost and speaker sense with stereo processing
1 Features
- Ultra low-noise mono boosted class-D amplifier
- 5.7 W at 1% THD+N and 6.9 W at 10% THD+N into 4-Ω load from 4.2-V supply
- 3.8 W at 1% THD+N and 4.5 W at 10% THD+N into 8-Ω load from 4.2-V supply
- Output noise for DAC + class-D (ICN) is 15.9 µV
- DAC + class-D SNR 111 dB at 1%THD+N/8 Ω
- THD+N –90 dB at 1 W / 8 Ω with flat frequency response
- PSRR 110 dB for 200 mVpp ripple at 217 Hz
- Input sample rates from 8 kHz to 96 kHz
- Built-in speaker sense
- Measures speaker current and voltage
- Measures VBAT voltage, chip temperature
- Dedicated real-time DSP for speaker protection
- Thermal and excursion protection
- Detects speaker leaks and damage
- High efficiency class-H boost converter with multi-level tracking
- 86% at 500 mW in 8 Ω with 3.6 V VBAT
- 87% at 700 mW in 8 Ω with 4.2 V VBAT
- Configurable automatic gain control (AGC)
- Limits battery current consumption
- Adjustable class-D switching edge-rate control
- Thermal, short-circuit, and under-voltage protection
- I2S, Left-justified, right-justified, DSP, and TDM input and output interface,
- I2C or SPI interface for register control
- Stereo configuration using the TAS2559 and TAS2560 devices
- Power supplies
- Boost input: 2.9 V to 5.5 V
- Analog/digital: 1.65 V to 1.95 V
- Digital I/O: 1.62 V to 3.6 V
- 42-ball, 0.5-mm pitch, DSBGA package
2 Applications
- Mobile phones and tablets
- Video doorbells and voice enabled thermostats
- Personal computers
- Bluetooth speakers and accessories
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