[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-562999-105":59,"doc-detail-562999-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","la1265-fmam-tuner-of-electronic-tuning-type-specifications-and-how-to-use","LA1265 - FM/AM Tuner of Electronic Tuning Type - Specifications and How to Use","","LA1265 is a monolithic linear IC designed as an electronic tuning FM/AM tuner. It integrates an FM chain with IF amplification, quadrature detection, AF preamplification, and tuning indicator drive, plus an AM chain with RF amplification, mixing, local OSC with ALC, IF amplification, detection and AGC, and signal metering. The document provides key features such as minimal external parts, excellent S/N, local OSC buffer, and variable stop sensitivity. It includes package dimensions, maximum ratings, operating conditions, and detailed operating characteristics, followed by practical usage guidance for LED lighting, muting/stop signals, sensitivity adjustment, AM/FM changeover methods, and related pin functions.",{"@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/la1265-fmam-tuner-of-electronic-tuning-type-specifications-and-how-to-use/562999/",{"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/la1265-fmam-tuner-of-electronic-tuning-type-specifications-and-how-to-use/562999.png","ImageObject",300,407,{"name":92,"@type":93},"pixelkiddo","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-13","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":14},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What are the main FM and AM functions of the LA1265?","Question",{"text":112,"@type":113},"FM includes an IF amplifier, quadrature detector, AF preamplifier, signal meter, and tuning indicator drive output. AM includes an RF amplifier, mixer, oscillator with ALC, IF amplifier, detector, AGC, signal meter, and tuning indicator drive output.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What key features does the LA1265 claim for system performance?",{"text":117,"@type":113},"The IC is designed to require a minimum number of external parts and offers excellent S/N. It also includes a local OSC with ALC and local OSC buffer, a tuning indicator pin with stop/muting drive commonality, variable stop sensitivity, and low whistle.",{"name":119,"@type":110,"acceptedAnswer":120},"How does the document recommend adjusting LED lighting sensitivity and stop-signal related behavior?",{"text":121,"@type":113},"For AM LED lighting sensitivity, it targets an IC input level around 30 dBµ and uses VR1 value guidance. For FM LED lighting sensitivity, it recommends selecting an IC input range (noting front-end variations) and adjusting VR2 accordingly, including using a lower-than-standard IC input to achieve a safer VR2 selection. Stop-signal sensitivity and FM stop-signal bandwidth are adjusted considering variations, with a recommendation to use the semifixed variable resistor for tuning.","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},562999,1791885168,{"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":14,"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},962090883892,"https://ap-avatar.wpscdn.com/avatar/e00115db34f3e0f11b?x-image-process=image/resize,m_fixed,w_180,h_180&k=1790152879550218658","Ordering number : EN1820C  \nMonolithic Linear IC  \n\n| | LA1265 |\n| --- | --- |\n|  | FM/AM Tuner of Electronic Tuning Type |\n\nFunctions  \nFM : IF amplifier, quadrature detector, AF preamplifier, signal meter, tuning indicator drive output (common with stop signal, muting drive output) .  \nAM : RF amplifier, MIX, OSC (with ALC), IF amplifier, detector, AGC, signal meter, tuning indicator drive output (common with stop signal) .  \nFeatures  \n• Minimum number of external parts required.  \n• Excellent S/N.  \n• Local OSC with ALC.  \n• Local OSC buffer.  \n• Tuning indicator pin (common with narrow-band stop signal and muting drive output) .  \n• Variable stop sensitivity (variable separately for FM, AM)  \n• Low whistle.  \n• Signal meter pin.  \nPackage Dimensions  \nunit : mm  \n3059-DIP22S  \n[LA1265]  \nSANYO : DIP22S  \nSpecifications  \nMaximum Ratings at Ta=25°C, See specified Test Circuit.  \n\n| Parameter | Symbol | Conditions | Ratings | Unit |\n| --- | --- | --- | --- | --- |\n| Maximum supply voltage | VCC max | Pins 7, 8, 17 | 16 | V |\n| Flow-in current | I8 | Pin 8 | 20 | mA |\n| Flow-out current | I20 | Pin 20 | 1 | mA |\n|  | I22 | Pin 22 | 2 | mA |\n| Allowable power dissipation | Pd max | Ta≤60°C | 650 | mW |\n| Operating temperature | Topr |  | –20 to +70 | °C |\n| Storage temperature | Tstg |  | –40 to +125 | °C |\n\nOperating Conditions at Ta=25°C  \n\n| Parameter | Symbol | Conditions | Ratings | Unit |\n| --- | --- | --- | --- | --- |\n| Recommended operating voltage | V CC |  | 8.5 | V |\n| Operating voltage range | VCC op |  | 6 to 14 | V |\n\nSANYO Electric Co., Ltd. Semiconductor Bussiness Headquarters  \nTOKYO OFFICE Tokyo Bldg. , 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN  \nN2897HA (KT)/40194HK/O077KI/D095KI/2255KI, TS No.1820-1/15  \nOperating Characteristics at Ta=25°C, V CC=8 .5V, See specified Test Circuit  \n\n| Parameter | Symbol | Conditions | Ratings |  |  | Unit |\n| --- | --- | --- | --- | --- | --- | --- |\n|  |  |  | min | typ | max |  |\n| [AM : f=1MHz] |  |  |  |  |  |  |\n| Quiescent current | Icco | No input |  | 18 | 26 | mA |\n| Detection output | VO1 | VIN=20dBµ , 400Hz, 30% mod. | 30 | 50 | 90 | mV |\n|  | VO2 | VIN=80dBµ , 400Hz, 30% mod. | 110 | 160 | 220 | mV |\n| S/N | S/N1 | VIN=20dBµ | 16 | 20 |  | dB |\n|  | S/N2 | VIN=80dBµ | 49 | 54 |  | dB |\n| Total harmonic distortion | THD1 | VIN=80dBµ , 400Hz, 30% mod. |  | 0.3 | 1.0 | % |\n|  | THD2 | VIN=107dBµ , 400Hz, 30% mod. |  | 0.5 | 2.0 | % |\n| Signal meter output | VSM 1 | No input | 0 | 0 | 0.2 | V |\n|  | VSM 2 | VIN=80dBµ | 2.4 | 2.8 | 3.1 | V |\n| LED lighting sensitivity | VLED on | I LED=1mA | 15 | 24 | 33 | dBµ |\n| Local OSC buffer output | VOSC | fOSC=1.45MHz | 220 | 275 | 330 | mV |\n| [FM : f=10 .7MHz] |  |  |  |  |  |  |\n| Quiescent current | Icco | No input |  | 20 | 28 | mA |\n| Input limiting sensitivity | –3dBL.S. | 3dB down, 400Hz, 100% mod. |  | 31 | 37 | dBµ |\n| Demodulation output | VO | VIN=10dBµ , 400Hz, 100% mod. | 240 | 330 | 460 | mV |\n| S/N | S/N | VIN=100dBµ | 78 | 84 |  | dB |\n| Total harmonic distortion | THD | VIN=100%dBµ , 400Hz, 100% mod. |  | 0.03 | 0.3 | % |\n| Signal meter output | VSM 1 | No input | 0 | 0 | 0.2 | V |\n|  | VSM 2 | VIN=100dBµ | 1.5 | 2.7 | 3.1 | V |\n| LED lighting sensitivity | LED-on | I LED=1mA | 35 | 50 | 65 | dBµ |\n| LED lighting bandwidth | LED-BW | VIN=100dB, I LED=1mA | 90 | 120 | 160 | kHz |\n| AM rejection ratio | AMR | VIN=100dBµ , FM=400Hz\u003Cbr>100% mod. AM=1kHz 30% mod. | 45 | 60 |  | dB |\n\nAmbient temperature, Ta – °C  \nAllowable power dissipation, Pd max – mW  \nEquivalent Circuit Block Diagram  \nS Carve  \nS meter   \nHow to use the LA1265  \n1. LED lighting, muting drive output, stop signal (SD) .  \n• For LED lighting, muting drive output, stop signal, the output at pin 8 is used.  \n• The voltage on pin 8, when tuned, turns from \"H\" to \"L\".(Active-Low)  \n• Signal bandwidth at pin 8.  \n– For AM, the bandwidth depends on the CF (BFU450CN) at pin 11. If a capacitor is connected in place of the CF, the bandwidth wil","cbCaitRlJwwsDtN2","https://ap.wps.com/l/cbCaitRlJwwsDtN2","pdf",1065741,15,"English","# Functions\n# Features\n# Package Dimensions\n# Maximum Ratings and Operating Conditions\n# Operating Characteristics\n# How to use the LA1265\n## LED lighting, muting drive output, stop signal (SD)\n## Sensitivity adjustment (AM and FM)\n## AM/FM changeover","[{\"question\":\"What are the main FM and AM functions of the LA1265?\",\"answer\":\"FM includes an IF amplifier, quadrature detector, AF preamplifier, signal meter, and tuning indicator drive output. AM includes an RF amplifier, mixer, oscillator with ALC, IF amplifier, detector, AGC, signal meter, and tuning indicator drive output.\"},{\"question\":\"What key features does the LA1265 claim for system performance?\",\"answer\":\"The IC is designed to require a minimum number of external parts and offers excellent S/N. It also includes a local OSC with ALC and local OSC buffer, a tuning indicator pin with stop/muting drive commonality, variable stop sensitivity, and low whistle.\"},{\"question\":\"How does the document recommend adjusting LED lighting sensitivity and stop-signal related behavior?\",\"answer\":\"For AM LED lighting sensitivity, it targets an IC input level around 30 dBµ and uses VR1 value guidance. For FM LED lighting sensitivity, it recommends selecting an IC input range (noting front-end variations) and adjusting VR2 accordingly, including using a lower-than-standard IC input to achieve a safer VR2 selection. Stop-signal sensitivity and FM stop-signal bandwidth are adjusted considering variations, with a recommendation to use the semifixed variable resistor for tuning.\"}]","LA1265 - FM/AM Tuner of Electronic Tuning Type - Specifications and How to Use | PDF",1791810295,38]