1 Features
• High-Performance Mono Class-D Amplifier
– 20-W at 1% THD+N (4 Ω, 16 V)
– 15.4-W at 1 % THD+N (4 Ω, 12.6 V)
• 0.03 % THD+N at 1 W (4 Ω, VBAT = 12.6 V)
• 32-μVrms A-Weighted Idle Channel noise
• 90-dB PSRR with 200 mVPP Ripple at 20 - 20 kHz
• 82.5% Efficiency at 1 W (4 Ω, VBAT = 12.6 V)
• < 1 μA HW Shutdown VBAT Current
• 42 mW / 63 mW Idle Dissipation (8.4 V / 12.6 V)
• Speaker Voltage and Current Sense
• Real-Time Diagnostics Using I/V Speaker Sense
– Over Current
– Short Circuit(short to power, short to ground
and terminal-to-terminal short)
– Over-Temperature
• VBAT Tracking Peak Voltage Limiter with Brown
Out Prevention
• 44.1-kHz to 192-kHz Sample Rates
• Flexible User Interfaces
– I2S/TDM: 8 Channels (32-bit / 96 kHz)
– I2C: 8 selectable Addresses
• MCLK Free Operation
• Low Pop and Click
• Power Supplies
– VBAT: 4.5 V to 16 V
– AVDD: 1.8 V
• Spread-Spectrum Low EMI Mode
• Thermal and Over Current Protection

2 Applications
• Laptop Computers
• Bluetooth Speakers
• Home Automation
• Smart Speakers/IoT

3 Description
The TAS2770 is a mono, digital input Class-D
audio amplifier optimized for efficiently driving small
loudspeakers . The output power, protection features
and packages make TAS2770 a good choice
for Smart speakers, Bluetooth speakers, home
automation devices, Notebook computers and tablets.
The Class-D amplifier is capable of delivering 20W of
continuous power into a 4-Ω load at 16V and 15W
into an 8-Ω load at 16V both at 1% THD. The broad
voltage input range of 4.5-16V and the high output
power makes this amplifier versatile enough to work
with battery power or with line powered systems
A Brown-Out preventer tracks peak voltage and
automatically self-limits the gain to the voltage
available. This hardware implemented feature
reduces the amplifier’s demand on system power
preventing both audio cut out and system shutdown
The TAS2770 can be used as a conventional amp
or with host based speaker protection algorithms.
The integrated speaker voltage and current sense
provides for real time feedback of loudspeaker
conditions to the protection algorithms through a
return I2S path.
Up to eight devices can share a common bus via
either I2S/TDM + I2C.
The TAS2770 device is available in a 26-pin, 0.4-mm
pitch QFN for a compact PCB footprint.