Product category:
Analogue and Mixed Signal ICs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TPA2012D2
Edited by the Electronicstalk Editorial
Team on 10 January 2005
Audio amp saves handset power and space
A new high-performance, filter-free stereo Class-D audio power amplifier enables designers of cellphones to develop audio-rich products, while maximising talk time and audio quality.
Texas Instruments has released a high-performance, filter-free stereo Class-D audio power amplifier that enables designers of cellphones to develop audio-rich products, while maximising talk time and audio quality With about two-thirds lower quiescent current and 80% lower noise floor than its nearest competitor, the TPA2012D2 packs high efficiency and audio quality in a tiny package, enabling the features and form factors consumers demand
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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The device is also ideal for personal digital assistants (PDA), notebook computers, portable DVD players and other types of portable audio equipment.
"As consumer desire for audio-rich features like polyphonic ringtones, MP3 music, streaming video with audio and 3-D surround-sound effects drives demand for stereo cellphones, manufacturers require two-channel, high-efficiency Class-D amplifiers to satisfy the demand without draining the battery", said Art George, Vice President of TI's high-performance linear business.
"With understanding of market trends and state-of-the-art Class-D audio power amplifier and packaging technology, TI is able to provide a tiny solution tailor-made for these applications".
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The 2.1W stereo Class-D audio power amplifier is currently available in a 4 x 4 mm ThinQFN (quad flat no-lead) package and is sampling in TI's state-of-the-art Lead (Pb)-free 2.0 x 2.0 mm wafer chip scale package (WCSP), enabling designers to maximise space in handheld devices.
Operating from a 3.3V supply, the TPA2012D2 draws a mere 6mA of supply current and has an A-weighted noise floor of 27uV RMS - well below the level detectable to the human ear.
This enables more audio features, clearer sound and efficient battery use.
The device needs only two external components for correct operation and was designed for maximum system flexibility, offering four gain select options and independent channel shutdown.
The new amplifier complements TI's OMAP processors, the premier platform for enabling cutting-edge, mobile entertainment applications such as MP3 and video streaming, as well as TI's digital signal processor-based solutions for portable audio players, offering manufacturers a suite of application-optimised products.
The TPA2012D2 is available now in a Pb-Free ThinQFN package from TI and its authorised distributors.
Suggested resale pricing in quantities of 1000 is $0.95.
The device in a Pb-free WCSP is sampling now and is expected to be available in volume in March 2005, priced at $1.05 in 1000-unit quantities.
An evaluation module (EVM) will be available in Q1 2005.
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