OTAÂ˲¨Æ÷µÄÉè¼Æ_×Ô¶¯»¯×¨ÒµÂÛÎÄ·¶ÎÄ
·¢²¼Ê±¼ä£º
2015-01-23
À´Ô´£º
ÈË´ó¾¼ÃÂÛ̳
×Ô¶¯»¯×¨ÒµÂÛÎÄ·¶ÎÄ
Ŀ¼
µÚÒ»Õ Â˲¨Æ÷µÄ¶¨Òå¼°·ÖÀà ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡2
µÚ¶þÕ ÓÐÔ´Â˲¨Æ÷µÄ»ù±¾¸ÅÄîºÍÉè¼ÆµÄÒ»°ã¿¼ÂÇ¡¡¡¡¡¡¡¡¡¡4
2.1 ÓÐÔ´Â˲¨Æ÷µÄ»ù±¾¸ÅÄî ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡4
2.2 Â˲¨Æ÷Éè¼ÆµÄÒ»°ã¿¼ÂÇ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡4
2.3 ÓÐÔ´Â˲¨Æ÷µÄÉè¼Æ²½Öè ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡5
µÚÈýÕ Â˲¨Æ÷µÄ±Æ½ü¼°ÆµÂʱ任¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡7
3.1 °ÍÌØÎÖ˹µÍͨÂ˲¨Æ÷µÄÉè¼Æ·½·¨ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡7
3.2 °ÍÌØÎÖ˹¹éÒ»»¯µÍͨÂ˲¨Æ÷²ÎÊý ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡10
3.3 Ä£ÄâÂ˲¨Æ÷µÄƵÂʱ任 ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡12
µÚËÄÕ OTA-CÁ¬Ðøʱ¼äÂ˲¨Æ÷µÄÉè¼Æ·½·¨¡¡¡¡¡¡¡¡¡¡¡¡¡¡16
4.1 OTA-CÂ˲¨Æ÷µÄ¼ò½é¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡16
4.2 OTA»ù±¾¸ÅÄîºÍÓ¦ÓÃÔÀí¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡16
4.3 OTAµÄÓ¦ÓÃÔÀí¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡21
4.4 Ë«¶þ½×OTA-CÂ˲¨Æ÷·ÖÎö¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡23
4.5 ÓÉÓÐÔ´RCÍøÂçÉú³É¶þ½×OTA-CÂ˲¨Æ÷¡¡¡¡¡¡¡¡¡¡¡¡¡¡27
4.6 ÓÐÔ´RCÂ˲¨Æ÷µÄ¿ìËÙÉè¼Æ·½·¨ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡28
µÚÎåÕ ÁéÃô¶È·ÖÎö¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡30
µÚÁùÕ ÓÐÔ´Â˲¨Æ÷µÄ¼ÆËã»ú·ÂÕæÄ£Äâ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡32
6.1 OrCAD/Pspice¼ò½é ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡32
6.2 ¼ÆËã»úÄ£Äâ·ÂÕ桪µç·ģÄâ¹ý³Ì ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡32
µÚÆßÕ ¶à¹¦ÄܵçÁ÷ģʽ¶þ½×ÓÐÔ´Â˲¨Æ÷µÄÐźÅÁ÷ͼ·¨Éè¼Æ¡¡¡¡¡33
7.1 Ë«¶þ½×º¯ÊýµÄÐźÅÁ÷ͼ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡33
7.2 ÐźÅÁ÷ͼµÄʵÏÖ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡34
7.3 ¿çµ¼ÖµµÄ¼ÆËãÓë·ÂÕæ½á¹û ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡36
µÚ°ËÕ ÓÃÐźÅÁ÷ͼÉè¼ÆÈÎÒâ½×OTA-CͨÓÃÐÍÂ˲¨Æ÷¡¡¡¡¡¡¡¡¡37
8.1 Éè¼Æ·½·¨ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡37
8.2 Éè¼ÆʵÀýÓëPspice·ÂÕæ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡39
С½ÚÓëÖÂл¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡40
²Î¿¼ÎÄÏס¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡41
ÕªÒª: ±¾´Î±ÏÒµÉè¼ÆµÄ¿ÎÌâÊÇÓÐÔ´Â˲¨Æ÷µÄÉè¼Æ¡£¸ù¾ÝOTA µÄ´«ÊäÌØÐÔ, Éè¼ÆÁ˼¸ÖÖ»ùÓÚµçÁ÷Ä£·½·¨µÄOTAÐźÅÔËËãµç·ºÍÁ¬Ðøʱ¼äÂ˲¨µç·, ²¢¸ø³öÁË´«µÝº¯ÊýµÄÍƵ¼¹ý³Ì¡£ÔÚÕâÀÎÒÊ×ÏÈÒªÊìϤRCÓÐÔ´Â˲¨Æ÷µÄÉè¼Æ£¬Â˲¨Æ÷µÄ¸÷Öֱƽü·½·¨£¬ÆµÂʱ任¼°ÓÉRCÂ˲¨Æ÷µ½OTA-CÂ˲¨Æ÷µÄ±ä»»¹¤³Ì¡£
OTA-CÂ˲¨Æ÷µÄµç·½á¹¹¼òµ¥£¬±¾Éè¼ÆÖУ¬Ìá³öÁ˲ÉÓÃÐźÅÁ÷ͼʵÏÖÈÎÒâ½× OTA-CͨÓÃÂ˲¨Æ÷µÄ·½·¨ .ͨ¹ý¶ÔÍøÂ纯ÊýµÄÖ±½Ó·ÖÎö ,µ¼³öÁËÈÎÒâ½×´«Ê亯ÊýµÄ OTA-CʵÏÖµç· .ÎÄÖиø³öÁËÂ˲¨Æ÷µÄÉè¼ÆʵÀýºÍ PSPICEÄ£Äâ ,ÒÔÖ¤Ã÷ËùÌá·½·¨µÄ¿ÉÐС£
¹Ø¼ü´Ê£º ÐźÅÁ÷ͼ£» ÔËËã¿çµ¼·Å´óÆ÷£» ÓÐÔ´Â˲¨Æ÷£» Á¬Ðøʱ¼ä
The design that has source wave filter
¡¾Abstract¡¿ The program of this graduated design is the design that has source wave filter. According to the transmission characteristic of the OTA , some OTA signal operation circuits and continuous time gm - c filters
which are founded in the current mode methods are designed , and the derivation process of the transfer function is also given. Here, I will first know RC, have the design of source wave filter, The various methods of approaching of wave filter, Frequency is alternated and goes to OTA-C wave filter from RC wave filter alternate project.
The circuit structure of OTA-C wave filter is simple , In this design, Have put forward to adopt signal, flow out the method that picture realizes arbitrary step OTA-C general wave filter . Through the direct analysis for network function, Derivation the OTA-C of arbitrary step transmission function realize circuit. In writing, the design example that has given wave filter is imitated with PSPICE, Mention method with proof is feasibled .
Key word£ºsingal flow graph £»operational-transconductance-amplifier (OTA ) £» active filter £» continuous- time