Texas Instruments TAS2562
The TAS2562 is a digital input Class-D audio amplifier optimized for efficiently driving high peak power into small loudspeaker applications. The Class-D amplifier is capable of delivering 6.1 W of peak power into a 4 Ω load at a battery voltage of 3.6 V. This permits pushing peak SPL while keeping speakers in the safe operation area.FEATURES
●1 High Performance Class-D Amplifier – 6.1 W 1% THD+N (4 Ω at 3.6 V) – 5 W 1% THD+N (8 Ω at 3.6 V)● 15 µVrms A-Weighted Idle Channel Noise
● 112.5dB SNR at 1% THD+N (8 Ω)
● 100dB PSRR with 200 mVPP Ripple at 20 - 20 kHz
● 83.5 % Efficiency at 1 W (8 Ω, VBAT = 4.2 V)
● < 1 µA HW Shutdown VBAT Current
● Speaker Voltage and Current Sense
● VBAT Tracking Peak Voltage Limiter with Brown Out Prevention
● 8 kHz to 192 kHz Sample Rates
● Flexible User Interfaces – I2S/TDM: 8 Channels (32-bit / 96 kHz) – I2C: 4 Selectable Addresses
● MCLK Free Operation
● Low Pop and Click
● Advanced Brown-Out Prevention
● Power Supplies – VBAT: 2.7 V to 5.5 V – VDD: 1.65 V to 1.95 V
● Spread-Spectrum Low EMI Mode
● Thermal and Over Current Protection
● 36-Ball, 0.4 mm Pitch, DSBGA Package 2
APPLICATIONS
● Mobile Phone● Tablets
● Bluetooth Speakers
● Consumer Audio Devices 3
DESCRIPTION
Integrated speaker voltage and current sense provides for real time monitoring of the loudspeakers. A battery tracking peak voltage limiter with brown out prevention optimizes amplifier headroom over the entire charge cycle preventing system shutdowns.