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触摸屏IC758CSWA15PC64
非直接代换
非直接代换是指不能进行直接代换的IC稍加修改外围电路,改变原引脚的排列或增减个别元件等,使之成为可代换的IC的方法。
代换原则:代换所用的IC可与原来的IC引脚功能不同、外形不同,但功能要相同,特性要相近;代换后不应影响原机性能。
1.不同封装IC的代换
相同类型的IC芯片,但封装外形不同,代换时只要将新器件的引脚按原器件引脚的形状和排列进行整形。例如,AFT电路CA3064和CA3064E,前者为圆形封装,辐射状引脚;后者为双列直插塑料封装,两者内部特性完全一样,按引脚功能进行连接即可。双列IC AN7114、AN7115与LA4100、LA4102封装形式基本相同,引脚和散热片正好都相差180°。前面提到的AN5620带散热片双列直插16脚封装、TEA5620双列直插18脚封装,9、10脚位于集成电路的右边,相当于AN5620的散热片,二者其它脚排列一样,将9、10脚连起来接地即可使用。
2.电路功能相同但个别引脚功能不同IC的代换
代换时可根据各个型号IC的具体参数及说明进行。如电视机中的AGC、视频信号输出有正、负极性的区别,只要在输出端加接倒相器后即可代换。
3.类型相同但引脚功能不同IC的代换
这种代换需要改变外围电路及引脚排列,因而需要一定的理论知识、完整的资料和丰富的实践经验与技巧。
4。有些空脚不应擅自接地
内部等效电路和应用电路中有的引出脚没有标明,遇到空的引出脚时,不应擅自接地,这些引出脚为更替或备用脚,有时也作为内部连接。
5.用分立元件代换IC
有时可用分立元件代换IC中被损坏的部分,使其恢复功能。代换前应了解该IC的内部功能原理、每个引出脚的正常电压、波形图及与外围元件组成电路的工作原理。同时还应考虑:
⑴信号能否从IC中取出接至外围电路的输入端:
⑵经外围电路处理后的信号,能否连接到集成电路内部的下一级去进行再处理(连接时的信号匹配应不影响其主要参数和性能)。如中放IC损坏,从典型应用电路和内部电路看,由伴音中放、鉴频以及音频放大级成,可用信号注入法找出损坏部分,若是音频放大部分损坏,则可用分立元件代替。
触摸屏IC758CSWA15PC64
IC758CSWB07PC128 |
IC758CSWA19PC64 |
IC758CSWA07PC128 |
IC758CSWA19PC128 |
IC758CSWA10PC64 |
IC758CSWA07PC64 |
IC758COWA07PC |
IC757CSW12WHMI |
IC757CSW24WHMI |
IC756CSW19IM |
IC757COW12WHMI |
IC756CSW10IM |
IC758COWB07PC128 |
R2L0N1A1B |
R2L0N2A0C |
IC758CSWB10PC128 |
IC758CSWA12PC128 |
IC758COWA07PC128 |
IC757COW15WHMI |
IC757COW07WHMI |
IC758COWA10PC64 |
IC758COWA10PC128 |
IC756COW12IM |
R2L0N1A0A |
R2L0N2A1C |
R2L0N1B0A |
R2L0N1A0C |
IC758CSWB12PC128 |
IC758CSWA24PC128 |
IC758CSWA12PC64 |
IC758CSWA10PC |
IC757CSW15WHMI |
IC756CSW24IM |
IC756CSW12IM |
IC758COWB10PC128 |
R2L0N1A1C |
R2L0N2B1C |
R2L0N2B0C |
IC758CSWA24PC64 |
IC758CSWA15PC64 |
IC086SLN042MM |
IC086SLM162 |
IC086SLN080 |
IC086SFP2MM |
IC086SFP3MM |
IC086SLM242 |
IC086SLM244 |
IC086SFP1SS |
IC086SLM084 |
IC086SLM168 |
IC086SLN240 |
IC086SLM082 |
IC086SLM244LL |
IC086SFP2SS |
IC086SLM042SS |
IC086SLM042MM |
IC086SFP1MM |
IC086SLN042SS |
IC086SLN050 |
IC086SLM484LL |
IC086GLM082 |
IC086GLM104 |
IC086GLM064 |
129T2705G0001 |
KNOWLEDGE-CENTER |
MEDIA-PKC |
KNOWLEDGECENTER |
LCS-BASIC-CYBERSECURITY-ASSESSMENT |
LCS-SITE-EVALUATION |
LCS-MAS-TRNG |
LCS-MAS-TRL |
LCS-MAS-SRV |
LCS-EFD-LCS |
ASTEL-B |
PRO-EFD-SRV |
PRO-HRDWRE |
PRO-AT |
PRO-TRVL-EXP |
PRO-CS-T4 |
PRO-CS-T3 |
PRO-CS-T2 |
PRO-CS-T1 |
PRO-CS-OS |
TK05 |
TK01 |
ASTEL-P |
PRO-CS-TRNG |
TRNG-MA |
TRNG-DY |
8498-SV-MT |
8497-TR-CL |
R88M-G6K010H-BS2-Z |
R88M-G6K010H-B-Z |
R88M-G6K010H-OS2-Z |
R88M-G6K010H-O-Z |
R88M-G6K010H-S2-Z |
R88M-G6K010H-Z |
R88M-G6K010T-BOS2-Z |
R88M-G6K010T-BO-Z |
R88M-G6K010T-BS2-Z |
R88M-G6K010T-B-Z |
R88M-G6K010T-OS2-Z |
R88M-G6K010T-O-Z |
R88M-G6K010T-S2-Z |
R88M-G6K010T-Z |
R88M-G75030H-BOS2-Z |
R88M-G75030H-BO-Z |
R88M-G75030H-BS2-Z |
R88M-G75030H-B-Z |
R88M-G75030H-OS2 |
R88M-G75030H-OS2-Z |
R88M-G75030H-O-Z |
R88M-G75030H-S2-Z |
R88M-G75030H-Z |
R88M-G75030T-BOS2-Z |
R88M-G75030T-BO-Z |
R88M-G75030T-BS2-Z |
R88M-G75030T-B-Z |
R88M-G75030T-OS2-Z |
R88M-G75030T-O-Z |
R88M-G75030T-S2-Z |
R88M-G75030T-Z |
R88M-G7K515H-BOS2-Z |
R88M-G7K515H-BO-Z |
R88M-G7K515H-BS2-Z |
R88M-G7K515H-B-Z |
R88M-G7K515H-OS2-Z |
R88M-G7K515H-O-Z |
R88M-G7K515H-S2-Z |
R88M-G7K515H-Z |
R88M-G7K515T-BOS2-Z |
R88M-G7K515T-BO-Z |
R88M-G7K515T-BS2-Z |
R88M-G7K515T-B-Z |
R88M-G7K515T-OS2-Z |
R88M-G7K515T-O-Z |
R88M-G7K515T-S2-Z |
R88M-G7K515T-Z |
R88M-G90010H-BOS2-Z |
R88M-G90010H-BO-Z |
R88M-G90010H-BS2-Z |
R88M-G90010H-B-Z |
R88M-G90010H-OS2-Z |
R88M-G90010H-O-Z |
R88M-G90010H-S2-Z |
R88M-G90010H-Z |
R88M-G90010T-BOS2-Z |
R88M-G90010T-BO-Z |
R88M-G90010T-BS2-Z |
R88M-G90010T-B-Z |
R88M-G90010T-OS2-Z |
R88M-G90010T-O-Z |
R88M-G90010T-S2-Z |
R88M-G90010T-Z |
R88M-GP10030H-BOS2-Z |
R88M-GP10030H-BO-Z |
R88M-GP10030H-BS2-Z |
R88M-GP10030H-B-Z |