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Stereo Amplifiers operate from 24 V backlight supply.
July 10, 2008 -
Available in 24-TSSOP package, Models TPA3121D2 and TPA3124D2 are 15 W, stereo analog-input Class-D amplifiers that feature single-ended architecture to save board area by eliminating 2 LC output filters. Along with single-ended stereo support, outputs can be configured in BTL mode to support 30 W mono applications, such as wireless speakers or subwoofers. Units are protected against over/under-voltage, over-temperature, and short circuit. Model TPA3124D2 features mute time of 30 µsec.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.) |
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New TI Amplifiers Reduce Audio Solution Cost for Flat Panel TVs
15-W Class-D amplifiers operate from 24-V backlight supply and drive single-ended outputs
DALLAS, July 2 / -- Texas Instruments Incorporated (TI) (NYSE:TXN) today introduced its second-generation, 15-W, stereo analog-input Class-D amplifiers with single-ended outputs. These highly-efficient devices eliminate components to reduce total solution size and cost in HDTVs and other consumer audio electronics. Innovative features address single-ended design challenges to ensure robust and reliable audio performance in LCD, plasma and DLP® TVs and other home audio products. (For more information see http://www.ti.com/tpa3121d2-pr.)
Eliminating components to enable cost-efficient and compact designs
As industrial design and increasingly smaller form factors become standard in the HDTV market, manufacturers face increasing price and size pressures. The TPA3121D2 and TPA3124D2 address these challenges. Single-ended architectures reduce bill of material (BOM) costs and save board area by eliminating two LC output filters. To further reduce cost, both devices can run off the existing +24-V backlight rail in a LCD HDTV, eliminating the need for a dedicated power rail. The BOM for an audio solution based on these devices is extremely clean when compared to the competition, with OEMs typically seeing up to 25 percent lower cost. With greater than 90 percent efficient operation, the new amplifiers also eliminate the need for a heat sink. Eliminating costly components reduces overall system cost and allows for a sleeker design.
Providing robust and reliable audio performance
The TPA3121D2 and TPA3124D2 reduce the BOM and save board space while providing robust performance. The devices leverage TI's field-proven technology to solve the click and pop challenges typically associated with single-ended solutions. Along with single-ended stereo support, the TPA3121D2 and TPA3124D2's outputs can be configured in BTL mode to support 30-W mono applications, such as wireless speakers or subwoofers. In addition, the TPA3124D2 features a fast mute time of 30 us. Depending on the video processor, a faster mute may be necessary to reduce power-loss pop. To ensure reliability, both devices are fully protected with integrated self-protection circuits against faults, including over-voltage, under-voltage, over-temperature and short circuit.
Extending TI's portfolio of home audio offerings for HDTVs
The TPA3121D2 and TPA3124D2 join TI's offering of single-ended audio solutions for HDTVs and consumer audio electronics. In addition, to address the market shift toward I2S inputs, TI offers digital-input, closed-loop Class-D solutions such as the recently-released TAS5706. For customers requiring more sophisticated audio processing, TI also provides a complete line of high-performance processors. For more information, see http://www.ti.com/tas5706 or http://www.ti.com/tas3308.
Pricing and availability
The TPA3121D2 and TPA3124D2 are available today from TI and its authorized distributors. The table below summarizes the feature set, packaging and suggested resale price of these devices and the entire TPA312xD2 family.
Stereo Mono Power Fast Mute 1KU
Device Power Power Supply Support Package Price
TPA3122D2 15W 30W 10-30V No 20-DIP $0.99
TPA3121D2 15W 30W 10-26V No 24-TSSOP $1.45
TPA3124D2 15W 30W 10-26V Yes 24-TSSOP $1.45
TPA3123D2 25W 50W 10-30V No 24-TSSOP $1.75
The TPA3121D2 is pin compatible with the TPA3124D2 and the TPA3123D2. Pin-to-pin compatibility enables manufacturers to leverage a single-board design across multiple product lines. To order samples and evaluation modules (EVMs) or to download the Audio solutions guide, see http://www.ti.com/tpa3121d2
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 http://www.ti.com/
Please refer all reader inquiries to:
Texas Instruments Incorporated
Semiconductor Group, SC-08063
Literature Response Center
14950 FAA Blvd.
Fort Worth, TX 76155
1-800-477-8924
Source: Texas Instruments Incorporated
Web site: http://www.ti.com/
Company Information:
Name: Texas Instruments, Inc. (TI)
Address: 12500 TI Blvd.
City: Dallas
State: TX
ZIP: 75243-4136
Country: USA
Phone: 800-336-5236
FAX: 972-995-4360
http://www.ti.com/
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