1 Features

1• 2x10 W/ch into 6-Ω Loads at 10% THD+N from a

12-V Supply

• 2x10 W/ch into 8-Ω Loads at 10% THD+N from a

13-V Supply

• Up to 90% Efficient Class-D Operation (8 Ω)

Eliminates Need for Heat Sinks

• <0.05% THD+N at 1 W/4 Ω/1 kHz

• <65-μV A-wgt Output Noise

• Wide Supply Voltage Range Allows Operation

from 4.5 V to 14.4 V

• Inductor-Free Operation

• Enhanced EMI Performance with Spread

Spectrum and 1SPW Operation

• SpeakerGuard™ Speaker Protection Includes

Automatic Gain Limit, Adjustable Power Limiter,

and DC Protection

• Robust Pin-to-Pin, Pin-to-Ground, and Pin-to-

Power Short Circuit Protection and Thermal

Protection

• Four Selectable, Fixed Gain Settings

• Single Ended or Differential Analog Inputs

• Click and Pop Free Startup

2 Applications

• Televisions

• BT Speakers

• Wireless Speakers

• Mini Speakers

• USB Speakers

• Consumer Audio Equipment

3 Description

The TPA3140D2 is an efficient, Class-D audio power

amplifier for driving bridged-tied stereo speakers at

up to 10 W, 6 Ω, or 8 Ω (per channel).

Advanced EMI Suppression Technology with Spread

Spectrum Control and 1SPW modulation scheme

enables the use of inexpensive ferrite bead filters at

the outputs while meeting EMC requirements for

system cost reduction. TPA3140D2 is not only fully

protected against shorts and overload, the

SpeakerGuard™ speaker protection circuitry includes

an adjustable Automatic Gain Limit (AGL), an

adjustable power limiter and a DC detection circuit for

protection of the connected speakers. The AGL

allows adjustment of the maximum output voltage

without signal clipping for enhanced speaker

protection and audio quality. The DC detect and Pinto-

Pin, Pin-to-Ground, and Pin-to-Power Short Circuit

protection circuit protect the speakers from output DC

and pin shorts caused in production. The outputs are

also fully protected against shorts to GND, PVCC,

and output-to-output. The short-circuit protection and

thermal protection includes an auto recovery feature.

The TPA3140D2 can drive stereo speakers with as

low as 4-Ω impedance. The high efficiency of the

TPA3140D2, 90% with an 8-Ω load, eliminates the

need for an external heat sink, and TPA3140D2 will

be able to output full power on a 2-layer PCB.