Audio Solutions Guide, 1Q 2007

18
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Products: Audio Amplifiers
Class-AB Audio Power Amplifiers
2.6-W Stereo Class-AB Speaker Amplifier with
DirectPath HP Amplifier and Integrated LDO
TPA6040A4
www.ti.com/sc/device/TPA6040A4
Class-AB speaker amplifiers, otherwise called linear amplifiers, are
typically used to drive 8-, 4- and even 3-Ω loads. They are generally
used in applications where cost is the main concern and where board
space and battery life are less important.
As the latest addition to TI’s class-AB portfolio, the TPA6040A4
integrates a stereo class-AB speaker amplifier, a stereo DirectPath
headphone amplifier and an LDO.
Key Features
• 2.6 W of output power per channel into 3 Ω
• DirectPath stereo headphone amplifier
• Removes need for bulky DC-blocking output capacitors
• Improves bass response
• Differential inputs on speaker amplifier provide 85 dB of CMRR,
rejecting unwanted common-mode noise present on the inputs.
• Design provides 80 dB of PSRR to reject unwanted noise present
on the power supply.
• Integrated LDO provides power supply for an audio codec or other
external devices.
• Packaging: QFN (5x5 mm)
Applications
• Notebook computers (see System Block Diagram on page 23)
• Portable DVD players
Class-AB Audio Power Amplifiers
To Know More
• For a complete list of Class-AB Audio Power Amplifiers,
see the Selection Guide on page 36.
* Expected release April 2007
6 W
TPA1517 (Stereo)
3.1 W
TPA6211A1 (Mono)
3 W
TPA6030A4 (Stereo)
2.8 W
TPA6020A2 (Stereo)
2.6 W
TPA6040A4 (Stereo)
PREVIEW*
FEATURED PRODUCT
Output Power
2 W
TPA6021A4 (Stereo)
TPA6011A4 (Stereo)
TPA6010A4 (Stereo)
TPA6017A2 (Stereo)
TPA0172 (Stereo)
TPA02x2 (Stereo)
TPA02x3, TPA0211 (Mono)
1.7 W
TPA6204A1 (Mono)
1.25 W
TPA6203A1, TPA6205A1 (Mono)
1 W
TPA0253 (Mono)
2.5 V 4 V 4.5 V 5.5 V 7 V 9.5 V 10 V 15 V 18 V
Supply Voltage
Audio Solutions Guide Texas Instruments 1Q 2007