TS4982 2 W stereo audio power amplifier with ground-referenced headphone driver Features TS4982 - QFN 32 2 W output power into 4 load per channel 125 mW into 16 load ground-referenced stereo headphone driver Four-step gain settings on speaker path 3 levels of 3D effect on speaker path Pinout (top view) PC-beep input system detection BYBYPP SPKSPKRREENN HDHDEENN PPGGNDND RROOUT+UT+ RROOUUT-T- PVPVCCCC HPVHPVCCCC 8 kV HBM ESD-protected headphone outputs 2424 2222 1919 1818 1717 2323 2121 2020 Pop and click reduction circuitry NCNC 2525 1616 LHLHPP 32-pin 5 x 5 mm QFN package HRHRININ 2626 RHRHPP 1515 Thermal shutdown and output short-circuit HLHLININ 2727 (a) 1414 PVPVSSSS protection 2828 GNGNDD 1313 CPCPVVSSSS K98K9822 3D03D0 2929 Applications CPCP-- 1212 3030 VCCVCC CPCPGGNNDD 1111 Laptop/notebook computers G0G0 3131 CPCP++ 1010 Portable audio devices G1G1 3232 CPCPVVCCCC 99 11 22 33 44 55 66 77 88 Description 3D13D1 LRLRIINN LLILLINN BEBEEEPP PGNPGNDD LOLOUUTT++ LLOOUUT-T- PVPVCCCC The TS4982 features a stereo loudspeaker driver and a ground-referenced stereo headphone Block diagram driver. An independent standby mode pin allows the TS4982 to simultaneously drive both output 8 PVCCL drivers. Operating on a single 5 V supply, the 18 PVCCR TS4982 delivers 2 W (typ.) output power into a 20 ROUT+ 4 load at 1% THD+N. 3 19 LLIN ROUT- STEREO 2 LRIN LOUDSPEAKER 3D 23 AUDIO INPUT 6 The TS4982 features a PC beep input, three SPKREN LOUT+ 7 LOUT- levels of 3D stereo enhancement and 4-step gain 4 BEEP 21 PGNDR PC BEEP GAIN 31 control using two digital input pins. Minimum & G0 5 DETECTION CONTROL PGNDL 32 G1 17 external components make the TS4982 well- HPVCC 27 suited for notebook and other hand-held sound HLIN STEREO 26 HRIN HEADPHONE equipment. It also has an internal thermal 16 22 LHP AUDIO INPUT HDEN 15 RHP shutdown (150 C) and output short circuit 24 CHARGE BYP BIAS protection mechanism. PUMP a. Patented US : 2009/0102561, EP : 1978636 June 2009 Doc ID 14527 Rev 2 1/31 www.st.com 31 Obsolete Product(s) - Obsolete Product(s) 28 GND 30 VCC 9 CPVCC 11 CPGND 10 CP+ 12 CP- 29 3D0 13 CPVSS 1 3D1 14 PVSSContents TS4982 Contents 1 Absolute maximum ratings and operating conditions . 3 2 Typical application 5 3 Electrical characteristics . 7 3.1 Electrical characteristics tables . 7 3.2 Electrical characteristic curves 9 4 Application information . 16 4.1 General description . 16 4.2 Loudspeaker BTL configuration principle . 16 4.3 Power dissipation and efficiency . 17 4.4 Loudspeaker 3D effect enhancement . 19 4.5 Low frequency response . 19 4.6 Gain settings 20 4.7 PC beep 21 4.8 Decoupling and charge pump capacitors . 22 4.8.1 Decoupling capacitors Cs and Cb . 22 4.8.2 Charge pump capacitors Cp and Cps 23 4.9 Wake-up time 23 4.10 Standby time 24 4.11 Pop & click 24 4.12 Headphone jack detection 24 4.13 PCB layout recommendations . 25 5 Package information 26 5.1 QFN32 package information 27 6 Ordering information . 29 7 Revision history . 30 2/31 Doc ID 14527 Rev 2 Obsolete Product(s) - Obsolete Product(s)