作者查詢 / greengoblin
作者 greengoblin 在 PTT [ Electronics ] 看板的留言(推文), 共90則
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4F推:我以前用.18做8 bit都用25f了, 10f真的不會太小嗎??11/07 13:20
20F推:razavi的SC章節有提到, 電容bottom端寄生電容較大11/07 23:40
3F推:你有先做過怎樣的研究嗎? LNA原理透徹了嗎?10/23 14:08
8F推:噗, 我以為這種情形只會在啞虎騎膜姿勢佳出現的說10/23 14:47
1F推:你的看法是?10/07 11:48
3F推:有哪本書有提到這個用法嗎?10/02 08:12
4F推:這樣得到的等效比較大的L是多少呢10/02 08:18
20F推:1000p的電容肉眼看得到嗎 (認真貌)09/16 22:09
3F推:用個1p都嫌大了,先跑個switch的FFT就知道問題在哪了09/14 20:32
4F推:看起來不到8bit阿, 而且取樣點數有點少09/14 20:43
5F→:取樣的波型應該整個變了吧...09/14 20:43
6F推:做到11bit多應該沒有很難, 除非用到很奇怪的W/L或load09/14 20:50
7F推:100p太大了, 取個1~2p就差不多啦09/14 21:00
8F→:p/n mos size隨便取個2:1 應該至少也有10以上了吧09/14 21:01
11F推:1bit應該是接錯了, 用來提升電壓到2Vdd的cap值多少?09/14 21:29
12F→:總之, 波型正確看FFT才有意義, 不然就是FFT跑錯了09/14 21:30
13F推:Bootstrapped不是該有個電容是用來提升電壓到2Vdd嗎?09/14 21:42
14F推:那sample的電容大小呢?09/14 21:50
15F→:喔喔 看到了 上面有寫2p09/14 21:51
16F推:理論上應該是不會有問題啦幾個新手常見的錯誤檢查看看09/14 21:53
17F→:1. p/n mos有沒有接反 2.body有沒接錯電位 3. clock09/14 21:54
18F→:有沒有給錯, 4.跑FFT有沒有正確取到值09/14 21:56
19F→:cs=1p還可以啦 不要太誇張跟效能應該沒啥影響09/14 21:57
20F→:反正小電路debug最多就是把每個節點的電位抓出來看09/14 21:58
21F→:看看跟你想得值一不一樣 這樣就知道問題在哪09/14 21:58
22F→:如果還不行那就只能請教學長或同學啦09/14 21:59
1F推:不就是有undefined model嗎?07/23 18:25
5F推:提供16bit訊號.......07/19 08:57
1F推:Razavi07/11 08:19
1F推:雖然沒做過pipeline但總覺得Cc=1pF好像也大大了點...06/21 21:19
2F→:two stage op的電流用到606mA好像更誇張...06/21 21:20