Re: [問題] 請問電源旁路電容的問題
※ 引述《JamesHone (洪金鋒)》之銘言:
: 在IC的電源接腳旁都會所謂的旁路電容
: 通常是一個大電容配上幾個小電容
: 其功用為可以減低漣波效應跟濾除高頻
: 可是小弟我並不知道,
: 這電容值到底是怎麼計算出來的啊?
: 感謝解答~
short answer:
每個電容在frequency domain都可以看成一個band pass(理想電容才是high pass)
不同size的電容可以顧到不同的frequency band
把三四個並起來之後 就可以讓很寬的band都有low impedance
long answer:
(這我記得之前有波過)
http://tinyurl.com/2bn4ob
http://tinyurl.com/24bjqd
http://tinyurl.com/2eoelx
http://tinyurl.com/yq2j2p
花一個小時看完以上連結就可以知道得清清楚楚了
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 152.14.55.70
推
02/08 00:36, , 1F
02/08 00:36, 1F
推
02/08 00:44, , 2F
02/08 00:44, 2F
→
02/08 02:22, , 3F
02/08 02:22, 3F
推
02/08 09:18, , 4F
02/08 09:18, 4F
→
02/08 09:19, , 5F
02/08 09:19, 5F
推
02/08 10:50, , 6F
02/08 10:50, 6F
→
02/08 21:24, , 7F
02/08 21:24, 7F
→
02/09 11:03, , 8F
02/09 11:03, 8F
→
02/09 11:04, , 9F
02/09 11:04, 9F
推
02/09 11:06, , 10F
02/09 11:06, 10F
→
02/09 11:08, , 11F
02/09 11:08, 11F
→
02/09 11:11, , 12F
02/09 11:11, 12F
→
02/09 11:14, , 13F
02/09 11:14, 13F
→
02/09 11:19, , 14F
02/09 11:19, 14F
→
02/09 11:20, , 15F
02/09 11:20, 15F
→
02/09 11:20, , 16F
02/09 11:20, 16F
→
02/09 21:04, , 17F
02/09 21:04, 17F
推
02/11 11:10, , 18F
02/11 11:10, 18F
討論串 (同標題文章)