Texas Instruments TAS2557
The TAS2557 device is a state-of-the-art Class-D audio amplifier which is a full system on a Chip (SoC). The device features a ultra low-noise audio DAC and Class-D power amplifier which incorporates speaker voltage and current sensing feedback. The device can be used easily with any processor with an I2S output and stereo implementations are possible when using two TAS2557 devices.| Part No. | TAS2557 |
|---|---|
| Datasheet | TAS2557 Download |
| Manufacturer |  Texas Instruments |
| Description | 5.7-W Class-D mono audio amplifier |
| Buy | Stock & Price |
FEATURES
●1 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
● Post-filter feedback (PFFB)
● 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 dual-core DSP for speaker protection – Thermal and excursion protection – Detects speaker leaks and damage
● High efficiency class-H boost converter with multilevel 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...
