[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-560844-105":59,"doc-detail-560844-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","tfa9842j-preliminary-data-2-channel-audio-amplifier","TFA9842J - Preliminary data - 2-channel audio amplifier","","Philips Semiconductors TFA9842J is a two-channel audio power amplifier that can operate as two Single-Ended (SE) channels with fixed gain of 26 dB or as one Bridge-Tied Load (BTL) channel with fixed gain of 32 dB. The device uses a 9-pin DIL-bent-SIL power package and includes a temperature-measurement-based protection circuit for maximum output across supply voltages and load conditions. It supports standby/mute, soft clipping, low standby current, high supply ripple rejection, and short-circuit and thermal protection for typical audio applications.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/tfa9842j-preliminary-data-2-channel-audio-amplifier/560844/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/tfa9842j-preliminary-data-2-channel-audio-amplifier/560844.png","ImageObject",300,407,{"name":92,"@type":93},"Nguyễn Văn Học","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-22","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":39},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How can the TFA9842J be configured for SE or BTL operation?","Question",{"text":112,"@type":113},"It can be used as two Single-Ended (SE) channels with a fixed gain of 26 dB, or as one Bridge-Tied Load (BTL) channel with a fixed gain of 32 dB.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What protection mechanism does the TFA9842J use?",{"text":117,"@type":113},"It uses a unique protection circuit based solely on multiple temperature measurements inside the chip to prevent unnecessary audio holes while maximizing output under varying conditions.",{"name":119,"@type":110,"acceptedAnswer":120},"What are typical supported output power ranges for SE and BTL?",{"text":121,"@type":113},"For SE operation the output power is 1 W to 7.5 W, and for BTL operation it is 2 W to 15 W, depending on supply and load conditions.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},560844,1791858280,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":39,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},1374402739827,"https://ap-avatar.wpscdn.com/avatar/14000c97e7351f1a627?x-image-process=image/resize,m_fixed,w_180,h_180&k=1787885694763230660","TFA9842J  \n2-channel audio amplifier; SE: 1 W to 7.5 W; BTL: 2 W to 15 W  \nRev. 01—26 April 2004 Preliminary data  \n1. General description  \n\n| The TFA9842J contains two identical audio power amplifiers. The TFA9842J can be used as two Single-Ended (SE) channels with a fixed gain of 26 dB or one Bridge-Tied Load (BTL) channel with a fixed gain of 32 dB.\u003Cbr>The TFA9842J comes in a 9-pin DIL-bent-SIL (DBS9P) power package. The TFA9842J is pin compatible with the TFA9841J and TFA9843J.\u003Cbr>The TFA9842J contains a unique protection circuit that is solely based on multiple temperature measurements inside the chip. This gives maximum output power for all supply voltages and load conditions with no unnecessary audio holes. Almost any supply voltage and load impedance combination can be made as long as thermal boundary conditions (number of channels used, external heatsink and ambient temperature) allow it.\u003Cbr>2. Features |  |  |\n| --- | --- | --- |\n| 3. Applications | ■■\u003Cbr>■■\u003Cbr>■■\u003Cbr>■■\u003Cbr>■ | SE: 1 W to 7.5 W; BTL: 2 W to 15 W operation possibility\u003Cbr>Soft clipping\u003Cbr>Standby and mute mode\u003Cbr>No on/off switching plops\u003Cbr>Low standby current\u003Cbr>High supply voltage ripple rejection\u003Cbr>Outputs short-circuit protected to ground, supply and across the load Thermally protected\u003Cbr>Pin compatible with the TFA9841J and TFA9843J. |\n\n■ Television  \n■ PC speakers  \n■ Boom box  \n■ Mini and micro audio receivers.  \nPhilips Semiconductors TFA9842J  \n2-channel audio amplifier (2 x SE or 1 x BTL)  \n4. Quick reference data  \nTable 1: Quick reference data  \n\n| Symbol | Parameter | Conditions | Min | Typ | Max | Unit |\n| --- | --- | --- | --- | --- | --- | --- |\n| V CC | supply voltage | operating | 9 | 17 | 26 | V |\n|  |  | no signal | - | - | 28 | V |\n| Iq | quiescent supply current | V CC = 18 V; RL = ∞ | - | 60 | 100 | mA |\n| Istb | standby supply current |  | - | - | 10 | µA |\n| Po | output power | V CC = 17 V; THD = 10 % |  |  |  |  |\n|  |  | SE; RL = 4 Ω | 7 | 7.5 | - | W |\n|  |  | BTL; RL = 8 Ω | 14 | 15 | - | W |\n| THD | total harmonic distortion | SE; Po = 1 W | - | 0.1 | 0.5 | % |\n|  |  | BTL; Po = 1 W | - | 0.05 | 0.5 | % |\n| Gv | voltage gain | SE | 25 | 26 | 27 | dB |\n|  |  | BTL | 31 | 32 | 33 | dB |\n| SVRR | supply voltage ripple rejection | f = 1 kHz |  |  |  |  |\n|  |  | SE | - | 60 | - | dB |\n|  |  | BTL | - | 65 | - | dB |\n\n5. Ordering information   \nTable 2: Ordering information  \n\n| Type number | Package |  |  |\n| --- | --- | --- | --- |\n|  | Name | Description | Version |\n| TFA9842J DBS9P plastic DIL-bent-SIL power package; 9 leads\u003Cbr>(lead length 12/11 mm); exposed die pad |  |  | SOT523-1 |\n\n9397 750 12013 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.  \nPhilips Semiconductors TFA9842J  \n2-channel audio amplifier (2 x SE or 1 x BTL)  \n6. Block diagram  \n\n| IN1+\u003Cbr>IN2+\u003Cbr>CIV\u003Cbr>MODE | | OUT1+\u003Cbr>OUT2−\u003Cbr>SVR |\n| --- | --- | --- |\n| Fig 1. Block diagram. |  |  |\n\n7. Pinning information  \n7.1 Pinning  \n\n| IN2+\u003Cbr>OUT2−\u003Cbr>CIV\u003Cbr>IN1+\u003Cbr>GND\u003Cbr>SVR\u003Cbr>MODE\u003Cbr>OUT1+\u003Cbr>V CC\u003Cbr>\u003Cbr>1\u003Cbr>\u003Cbr>2\u003Cbr>3\u003Cbr>\u003Cbr>4\u003Cbr>5 6\u003Cbr>\u003Cbr>7\u003Cbr>8 9\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>\u003Cbr>|\n| --- |\n| Fig 2. Pin configuration. |\n\n9397 750 12013 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.  \nPhilips Semiconductors TFA9842J  \n2-channel audio amplifier (2 x SE or 1 x BTL)  \n7.2 Pin description  \nTable 3: Pin description  \n\n| Symbol | Pin | Description |\n| --- | --- | --- |\n| IN2+ | 1 | input 2 |\n| OUT2− | 2 | inverted loudspeaker terminal 2 |\n| CIV | 3 | common input voltage decoupling |\n| IN1+ | 4 | input 1 |\n| GND | 5 | ground |\n| SVR | 6 | half supply voltage decoupling (ripple rejection) |\n| MODE | 7 | mode selection input (standby, mute and operating) |\n| OUT1+ | 8 | non inverted loudspeaker terminal 1 |\n| V CC | 9 | supply voltage |\n| TAB | - | back side tab or heats spreader has to be connected to ground |\n\n8. Functional description  \n8.1 Input configuration  \nThe input cut-off frequency is:  \nf i (cut – off ) = --2---","cbCaim85lfle6bdT","https://ap.wps.com/l/cbCaim85lfle6bdT","pdf",141813,22,"English","# General description\n# Features\n# Applications\n# Quick reference data\n## Table 1: Quick reference data\n# Ordering information\n## Table 2: Ordering information\n# Block diagram\n# Pinning information\n## Fig 2. Pin configuration\n## Table 3: Pin description\n# Functional description\n## 8.1 Input configuration\n## 8.2 Power amplifier\n### 8.2.1 Output power measurement\n### 8.2.2 Headroom","[{\"question\":\"How can the TFA9842J be configured for SE or BTL operation?\",\"answer\":\"It can be used as two Single-Ended (SE) channels with a fixed gain of 26 dB, or as one Bridge-Tied Load (BTL) channel with a fixed gain of 32 dB.\"},{\"question\":\"What protection mechanism does the TFA9842J use?\",\"answer\":\"It uses a unique protection circuit based solely on multiple temperature measurements inside the chip to prevent unnecessary audio holes while maximizing output under varying conditions.\"},{\"question\":\"What are typical supported output power ranges for SE and BTL?\",\"answer\":\"For SE operation the output power is 1 W to 7.5 W, and for BTL operation it is 2 W to 15 W, depending on supply and load conditions.\"}]","TFA9842J - Preliminary data - 2-channel audio amplifier | PDF",1791804267,55]