Audio converters and 2-VRMS line drivers enable crystal-clear sound

Advanced under voltage monitor enables more energy-efficient designs

DALLAS (Feb. 4, 2009) – Texas Instruments Incorporated (TI) (NYSE: TXN) today extended its audio portfolio with a high-performance, multi-channel Codec, three digital-to-analog converters (DACs) and two pop-free 2-VRMS DirectPathTM line drivers. Energy-efficient designs require systems to shut down and start up more frequently, often creating clicks and pops, which degrade the listening experience. To address these concerns, the DRV603 line driver integrates under voltage protection (UVP) to monitor the supply rail and mute outputs before the rest of the system loses power. Regardless of how the system powers up or browns out, the feature ensures that any pops, clicks or noise created in the rest of the signal chain will be muted, so the user experiences crystal-clear audio. For more information on this product, please see www.ti.com/drv603-pr.

Key features of the DRV 602 and DRV603
• 2-VRMS output even with 3.3-V power supply
• Differential inputs
• Ground reference outputs
• Variable input gain
• 106.5 dB SNR (DRV602) and >109 dB SNR (DRV603)

Key benefits
• Reduces component count and cost
• Simplifies design with direct connection to high performance DACs and set-top box systems-on-chip
• Eliminates blocking caps to minimize pop/click, reduce system cost and extend low-frequency response
• Maximizes design flexibility by allowing connection to DACs of any voltage
• Enables superior audio performance without signal degradation and meets requirements for HD products like Blue-ray DVD players

Availability, packaging and pricing
The multi-channel Codecs, DACs and line drivers are available today. Suggested resale pricing in 1000-piece quantities and additional details are listed below.

Part Number	Channels	SNR (dB)	I/O	Price	Samples, EVMs
PCM3168A	6 channels in, 8 out	107dB and 113dB	Differential I/O	$4.60	www.ti.com/pcm3168
PCM1690	8 channels	113dB	Differential outputs	$2.60	www.ti.com/1690
PCM1691	8 channels	111dB	Single-ended outputs	$2.50	www.ti.com/1691
PCM1789	2 Channels	113dB	Differential outputs	$1.90	www.ti.com/pcm1789
DRV602	2 channels	102 dB	Differential input, single-ended output	$0.75	www.ti.com/drv602
DRV603	2 channels	>109 dB	Differential input, single-ended output	$0.85	www.ti.com/drv603

Find out more about TI’s audio portfolio by visiting the links below:
• TI’s Audio Selection guide: www.ti.com/audio
• TI Audio community: https://community.ti.com/forums/default.aspx?GroupID=21

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About Texas Instruments
Texas Instruments (NYSE: TXN) helps customers solve problems and develop new electronics that make the world smarter, healthier, safer, greener and more fun. A global semiconductor company, TI innovates through manufacturing, design and sales operations in more than 25 countries. For more information, go to www.ti.com

Please refer all reader inquiries to:

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