Page 50 - Demo

48 www.edntaiwan.comDESIGN IDEAS%u57166%uff1a%u9ad8%u52d5%u614b%u7bc4%u570d%u653e%u5927%u5668%u5e36%u6709%u9644%u52a0%u96fb%u963b%uff0c%u6709%u52a9%u65bc%u5e73%u8861%u5927%u8f38%u5165%u8a0a%u865f%u64fa%u5e45%u7bc4%u570d%u5167%u7684%u8f38%u5165%u963b%u6297%u8b8a%u5316%uff0c%u540c%u6642%u4ecd%u4fdd%u6301%u7531Ibias%u6c7a%u5b9a%u6bcf%u500b%u96fb%u6676%u9ad4%u7684%u76f8%u7b49%u96c6%u96fb%u6975%u96fb%u6d41%u504f%u7f6e%u3002%u57167%uff1a%u8f03%u5c0f%u7684%u8a0a%u865f%u8f38%u5165%u963b%u6297%u7d50%u679c%u548c%u8f38%u51fa%u5dee%u5206%u96fb%u6d41%u3002%u5c0f%u8a0a%u865f%u8f38%u5165%u5982%u57163%u6240%u793a%uff0c%u7576%u8f38%u5165%u8a0a%u865f%u8f03%u5c0f%u6642%uff0c%u96fb%u8def%u8868%u73fe%u985e%u4f3c%u65bc%u4e00%u500b%u5c0f%u8a0a%u865fClass A%u653e%u5927%u5668%uff0c%u56e0%u70ba%u6240%u6709%u96fb%u6676%u9ad4%u90fd%u4ee5Ibias%u504f%u7f6e%u7684%u96c6%u96fb%u6975%u96fb%u6d41%u5de5%u4f5c%u3002%u56e0%u6b64%uff0c%u7576%u8f38%u5165%u96fb%u6d41%u70ba%u96f6%u6642%uff0cQ1%u548cQ3%u5747%u5c0e%u901aIbias%uff0cQ2%u548cQ4%u4e5f%u662f%u5982%u6b64%uff0c%u96fb%u8def%u8868%u73fe%u7dad%u6301%u5dee%u5206%u8f38%u51fa%u3002%u5be6%u6e2c%u7d50%u679c%u70ba%u57164%u986f%u793a%u57fa%u65bc%u57161%u4e2d%u96fb%u8def%u7684%u5be6%u6e2c%u7d50%u679c%uff0c%u8a72%u7d50%u679c%u986f%u793a%u5728%u6e2c%u8a66%u689d%u4ef6%u70ba2Vpp@1KHz%u6b63%u5f26%u6ce2%u8f38%u5165%u6642%uff0c%u4ee5%u6578%u4f4d%u793a%u6ce2%u5668(DSO)%u89c0%u6e2c%u3002%u57165%u986f%u793a%u4e86%u57161%u7684LTspice%u6a21%u64ec%u7d50%u679c%u3002%u503c%u5f97%u6ce8%u610f%u7684%u662f%uff0cLTspice%u7684%u6ce2%u5f62%u984f%u8272%u8207%u986f%u793a%u504f%u7f6e%u5df2%u8abf%u6574%uff0c%u4ee5%u4fbf%u8207DSO%u7d50%u679c%u9032%u884c%u6bd4%u8f03%u3002%u6b64%u5916%uff0c%u5f9eDSO%u548cLTspice%u7684%u7d50%u679c%u7686%u53ef%u89c0%u5bdf%u5230%u8f15%u5fae%u7684%u300c%u4ea4%u8d8a%u5931%u771f%u300d(cross-over distortion)%uff0c%u9019%u5728%u50b3%u7d71Class A/B%u968e%u6bb5%u4e2d%u5e38%u898b%u3002%u6b64%u554f%u984c%u53ef%u900f%u904e%u63d0%u9ad8Ibias%u6539%u5584%uff0c%u4f46%u4ee3%u50f9%u662f%u66f4%u9ad8%u7684%u653e%u5927%u5668%u529f%u8017%u3002%u9019%u7a2e%u62d3%u64b2%u7d50%u69cb%u9664%u4e86%u63d0%u4f9b%u55ae%u7aef%u5230%u5dee%u5206%u529f%u80fd%u8f49%u63db%uff0c%u9084%u63d0%u4f9b%u4e86%u5176%u4ed6%u529f%u80fd%u3002%u5b83%u89e3%u6c7a%u4e86%u52d5%u614b%u8f38%u5165%u963b%u6297%u96a8%u66ab%u614b%u8f38%u5165%u8a0a%u865f%u96fb%u5e73%u8b8a%u5316%u7684%u554f%u984c%uff0c%u9019%u4e00%u9ede%u5728%u50b3%u7d71%u653e%u5927%u5668%u8a0e%u8ad6%u4e2d%u8f03%u5c11%u63d0%u53ca%u3002%u7576%u653e%u5927%u5668%u7684%u6709%u6548%u8f38%u5165%u963b%u6297%u96a8%u52d5%u614b%u8a0a%u865f%u96fb%u5e73%u8b8a%u5316%u6642%uff0c%u5c07%u6703%u8207%u8a0a%u865f%u6e90%u963b%u6297%u4e92%u76f8%u4f5c%u7528%uff0c%u5f62%u6210%u4e00%u500b%u8207%u975e%u7dda%u6027%u8a0a%u865f%u76f8%u95dc%u7684%u96fb%u58d3/%u529f%u7387%u5206%u58d3%uff0c%u9032%u800c%u8abf%u8b8a%u8f38%u5165%u8a0a%u865f%u96fb%u5e73%uff0c%u5c0e%u81f4%u8a0a%u865f%u5931%u771f%u3002%u6539%u5584%u8f38%u5165%u963b%u6297%u57166%u986f%u793a%u4e86%u4e00%u7a2e%u6539%u9032%u7248%u672c%uff0c%u900f%u904e%u6dfb%u52a0%u984d%u5916%u96fb%u963b%u5668%u4ee5%u6e1b%u5c11%u8f38%u5165%u963b%u6297%u96a8%u8f38%u5165%u8a0a%u865f%u8b8a%u5316%u7684%u5f71%u97ff%u3002%u8acb%u6ce8%u610f%uff0c%u6dfb%u52a0%u984d%u5916%u96fb%u963b%u5668%u6709%u52a9%u65bc%u5e73%u8861%u5927%u8f38%u5165%u8a0a%u865f%u64fa%u5e45%u7bc4%u570d%u5167%u7684%u8f38%u5165%u963b%u6297%u8b8a%u5316%uff0c%u540c%u6642%u4fdd%u6301%u6bcf%u500b%u96fb%u6676%u9ad4%u7684%u96c6%u96fb%u6975%u96fb%u6d41%u504f%u7f6e%u76f8%u7b49(%u7531Ibias%u6c7a%u5b9a)%u3002%u5982%u57167%u6240%u793a%u7684LTspice%u6a21%u64ec%u8f38%u5165%u963b%u6297%u7d50%u679c%uff0c%u7576%u5728%u8f03%u5927%u7bc4%u570d%u7684%u6b63%u8ca0%u8f38%u5165%u8a0a%u865f%u9032%u884c%u6383%u63cf%u6642%uff0c%u900f%u904e%u5c0d%u8f38%u5165%u96fb%u58d3%u548c%u8f38%u5165%u96fb%u6d41%u6c42%u5c0e%u5f97%u51faLTspice%uff0c%u4ee5%u8a08%u7b97%u8f38%u5165%u963b%u6297%u7d50%u679c%u3002%u9ad8%u983b%u5bec%u548c%u52d5%u614b%u7bc4%u570d%u55ae%u7aef%u8f49%u5dee%u5206%u653e%u5927%u5668%u96fb%u8def%u9019%u4e9b%u96fb%u8def%u904b%u884c%u65bc%u300c%u96fb%u6d41%u57df%u300d(current domain)%uff0c%u80fd%u5920%u5728%u4f4e%u975c%u614b%u529f%u8017%u689d%u4ef6%u4e0b%u63d0%u4f9b%u6975%u9ad8%u983b%u5bec%u8207%u9ad8%u52d5%u614b%u7bc4%u570d%uff0c%u800c%u4e14%u50c5%u9700%u55ae%u96fb%u6e90%u4f9b%u96fb%u3002%u5728%u904e%u53bb%u7684%u5be6%u8e10%u4e2d%uff0c%u4f5c%u8005%u66fe%u4ee5BiCMOS%u88fd%u7a0b%u642d%u914d%u9ad8%u983bSiGe%u96d9%u6975%u6027%u96fb%u6676%u9ad4%u5be6%u73fe%u8a72%u67b6%u69cb%uff0c%u4e26%u7372%u5f97%u826f%u597d%u7d50%u679c%u3002(%u66f4%u591a%u5167%u5bb9%u8acb%u8a73%u898b%u672c%u520a%u7db2%u7ad9)