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TAS5142DKDR Datasheet(PDF) 1 Page - Texas Instruments |
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TAS5142DKDR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 26 page TM www.ti.com FEATURES APPLICATIONS DESCRIPTION PVDD − Supply Voltage − V 0 10 20 30 40 50 60 70 80 90 100 110 120 0 4 8 12 16 20 24 28 32 8 Ω 4 Ω TC = 75°C THD+N @ 10% 6 Ω G002 TAS5142 SLES126B – DECEMBER 2004 – REVISED MAY 2005 STEREO DIGITAL AMPLIFIER POWER STAGE deliver high-quality, high-efficiency audio amplification with proven EMI compliance. This device requires two • 2×100 W at 10% THD+N Into 4- Ω BTL (1) power supplies, at 12 V for GVDD and VDD, and at • 2×80 W at 10% THD+N Into 6- Ω BTL 32 V for PVDD. The TAS5142 does not require power-up sequencing due to internal power-on reset. • 2×65 W at 10% THD+N Into 8- Ω BTL The efficiency of this digital amplifier is greater than • 4×40 W at 10% THD+N Into 3- Ω SE 90% into 6 Ω, which enables the use of smaller • 4×30 W at 10% THD+N Into 4- Ω SE power supplies and heatsinks. • 1×160 W at 10% THD+N Into 3- Ω PBTL The TAS5142 has an innovative protection system • 1×200 W at 10% THD+N Into 2- Ω PBTL (1) integrated on-chip, safeguarding the device against a wide range of fault conditions that could damage the • >100 dB SNR (A-Weighted) system. These safeguards are short-circuit protection, • <0.1% THD+N at 1 W overcurrent protection, undervoltage protection, and • Two Thermally Enhanced Package Options: overtemperature protection. The TAS5142 has a new – DKD (36-pin PSOP3) proprietary current-limiting circuit that reduces the possibility of device shutdown during high-level music – DDV (44-pin HTSSOP) transients. A new programmable overcurrent detector • High-Efficiency Power Stage (>90%) With allows the use of lower-cost inductors in the demodu- 140-m Ω Output MOSFETs lation output filter. • Power-On Reset for Protection on Power Up BTL OUTPUT POWER vs SUPPLY VOLTAGE Without Any Power-Supply Sequencing • Integrated Self-Protection Circuits Including Undervoltage, Overtemperature, Overload, Short Circuit • Error Reporting • EMI Compliant When Used With Recommended System Design • Intelligent Gate Drive • Mini/Micro Audio System • DVD Receiver • Home Theater The TAS5142 is a third-generation, high-perform- ance, integrated stereo digital amplifier power stage with an improved protection system. The TAS5142 is (1) It is not recommended to drive 200 W (total capable of driving a 4- Ω bridge-tied load (BTL) at up power) into the DDV package continuously. to 100 W per channel with low integrated noise at the For multichannel systems that require two output, low THD+N performance, and low idle power channels to be driven at full power with the DDV package option, it is recommended to dissipation. design the system so that the two channels A low-cost, high-fidelity audio system can be built are in two separate devices. using a TI chipset, comprising a modulator (e.g., PurePath Digital™ TAS5508) and the TAS5142. This system only re- quires a simple passive LC demodulation filter to Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PurePath Digital, PowerPad are trademarks of Texas Instruments. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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