MOSFET\u306e\u71b1\u96d1\u97f3\u304c$4kT\\gamma g_m$\u3067\u8868\u3055\u308c\u308b\u3068\u3044\u3046\u306e\u3067\u4e00\u4f53\u3053\u306egm\u306f\u3069\u3053\u304b\u3089\u3084\u3063\u3066\u6765\u305f\u306e\u3060\u3068\u4e0d\u601d\u8b70\u306b\u601d\u3063\u3066\u3044\u305f\u304c\u3001\u3053\u308c\u306f\u672c\u6765$V_{DS}=0$\u306b\u304a\u3051\u308b$g_{ds}$\u3067\u3042\u3063\u3066\u8fd1\u4f3c\u3068\u3057\u3066\u5927\u4f53\u4e00\u81f4\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u3089\u3057\u3044\u3002<\/p>\n\n\n\n
\u8a08\u7b97\u3057\u3066\u307f\u308b\u3068\u3001<\/p>\n\n\n\n
\u98fd\u548c\u9818\u57df\u306e\u5f0f: $$I_D=\\frac{1}{2} \\frac{W}{L} \\mu C_{ox} (V_{GS}-V_{th})^2$$<\/p>\n\n\n\n
\u7dda\u5f62\u9818\u57df\u306e\u5f0f: $$I_D=\\frac{W}{L} \\mu C_{ox} V_{DS}(V_{GS}-V_{th}-\\frac{1}{2}V_{DS})$$<\/p>\n\n\n\n
$$g_{ds}|_{V_{DS}=0}=\\frac{\\partial I_D}{\\partial V_{DS}} |_{V_{DS}=0}$$<\/p>\n\n\n\n
$$=\\frac{W}{L}\\mu C_{ox} (V_{GS}-V_{th}-V_{DS}) |_{V_{DS}=0}$$<\/p>\n\n\n\n
$$=\\frac{W}{L}\\mu C_{ox} (V_{GS}-V_{th})$$<\/p>\n\n\n\n
$$g_{m,sat}=\\frac{\\partial I_D}{\\partial V_{GS}}$$<\/p>\n\n\n\n
$$=\\frac{W}{L} \\mu C_{ox} (V_{GS}-V_{th})$$<\/p>\n\n\n\n
\u3068\u306a\u308a\u3001\u78ba\u304b\u306b\u4e00\u81f4\u3059\u308b\u3002<\/p>\n\n\n\n
\u3042\u3068\u3001\u3053\u306e\u03b3\u306e\u7406\u8ad6\u5024\u304c(\u9577\u30c1\u30e3\u30cd\u30eb\u306b\u304a\u3044\u3066)2\/3\u306b\u4e00\u81f4\u3059\u308b\u3068\u3044\u3046\u6559\u79d1\u66f8\u306b\u3088\u304f\u66f8\u3044\u3066\u3042\u308b\u8a71\u306b\u3064\u3044\u3066\u306f\u3001\u300cNoise: Sources, Characterization, Measurement\u300d\u3068\u3044\u3046\u6614\u306e\u672c\u3092\u898b\u308c\u3070\u66f8\u3044\u3066\u3042\u308a\u305d\u3046\u306a\u306e\u3060\u304c\u3055\u3059\u304c\u306b\u624b\u5143\u306b\u306a\u3044\u3002\u5927\u5b66\u3067\u63a2\u3059\u304b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
MOSFET\u306e\u71b1\u96d1\u97f3\u304c$4kT\\gamma g_m$\u3067\u8868\u3055\u308c\u308b\u3068\u3044\u3046\u306e\u3067\u4e00\u4f53\u3053\u306egm\u306f\u3069\u3053\u304b\u3089\u3084\u3063\u3066\u6765\u305f\u306e\u3060\u3068\u4e0d\u601d\u8b70\u306b\u601d\u3063\u3066\u3044\u305f\u304c\u3001\u3053\u308c\u306f\u672c\u6765$V_{DS}=0$\u306b\u304a\u3051\u308b$g_{ds}$\u3067\u3042\u3063\u3066\u8fd1\u4f3c\u3068\u3057\u3066\u5927\u4f53\u4e00\u81f4\u3059\u308b\u3068\u3044 … <\/p>\n