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鎮ㄥソ锛屾杩庝締鍒扮董搴浕瀛愬競鍫寸恫(w菐ng) 鐧婚寗 | 鍏嶈不娉ㄥ唺

鐩存帴鏁�(sh霉)瀛楅牷鐜囧悎鎴�
闁辫畝锛�19752鏅傞枔锛�2011-08-23 16:40:08

銆�銆�鐩存帴鏁�(sh霉)瀛�闋荤巼鍚堟垚鏄竴绋柊鐨勯牷鐜囧悎鎴愭妧琛�(sh霉)鍜屼俊铏熺敘(ch菐n)鐢熺殑鏂规硶锛屽叿鏈夎秴楂橀�熺殑闋荤巼杞�(zhu菐n)鎻涙檪闁�銆佹サ楂樼殑闋荤巼鍒嗚鲸鐜�鍒嗚鲸鐜囧拰杓冧綆鐨勭浉浣嶅櫔鑱诧紝鍦ㄩ牷鐜囨敼璁婅垏瑾�(di脿o)闋绘檪锛孌DS鑳藉淇濇寔鐩镐綅鐨勯�ｇ簩(x霉)锛屽洜姝ゅ緢瀹规槗瀵︾従(xi脿n)闋荤巼銆佺浉浣嶅拰骞呭害瑾�(di脿o)鍒�銆傛澶�锛孌DS鎶�琛�(sh霉)澶ч儴鍒嗘槸鍩轰簬鏁�(sh霉)瀛楅浕璺�鎶�琛�(sh霉)鐨�锛屽叿鏈夊彲绶ㄧ▼鎺у埗鐨勭獊鍑哄劒(y艒u)榛�銆傚洜姝わ紝閫欑ó淇¤櫉鐢�(ch菐n)鐢熸妧琛�(sh霉)寰楀埌浜嗚秺渚嗚秺寤ｆ硾鐨勬噳(y墨ng)鐢�锛屽緢澶氬粻瀹跺凡缍�(j墨ng)鐢熺敘(ch菐n)鍑轰簡DDS灏堢敤鑺墖锛岄�欑ó鍣ㄤ欢鎴愮偤鐣朵粖闆诲瓙绯荤当(t菕ng)鍙婅ō(sh猫)鍚勪腑闋荤巼婧愮殑鍣ㄤ欢銆�

鍘熺悊

鐩存帴鏁�(sh霉)瀛楅牷鐜囧悎鎴愮殑鍘熺悊

銆�銆�宸ヤ綔閬庣▼鐐�:

銆�銆�1, 灏囧瓨浜庢暩(sh霉)琛ㄤ腑鐨勬暩(sh霉)瀛楁尝褰�,缍�(j墨ng)鏁�(sh霉)妯¤綁(zhu菐n)鎻涘櫒D/A,褰㈡垚妯℃摤閲忔尝褰�.

銆�銆�2, 鍏╃ó鏂规硶鍙互鏀硅畩杓稿嚭淇¤櫉鐨勯牷鐜�:

銆�銆�(1),鏀硅畩鏌ヨ〃灏嬪潃鐨勬檪閻楥LOCK鐨勯牷鐜�, 鍙互鏀硅畩杓稿嚭娉㈠舰鐨勯牷鐜�.

銆�銆�(2), 鏀硅畩灏嬪潃鐨勬闀蜂締鏀硅畩杓稿嚭淇¤櫉鐨勯牷鐜�.DDS鍗抽噰鐢ㄦ娉�. 姝ラ暦鍗崇偤灏嶆暩(sh霉)瀛楁尝褰㈡煡琛ㄧ殑鐩镐綅澧為噺.鐢辩疮鍔犲櫒灏嶇浉浣嶅閲忛�茶绱姞, 绱姞鍣ㄧ殑鍊间綔鐐烘煡琛ㄥ湴鍧�.

銆�銆�3, D/A杓稿嚭鐨勯殠姊舰娉㈠舰,缍�(j墨ng)浣庨��(甯堕��)婵炬尝,鎴愮偤璩�(zh矛)閲忕鍚堥渶瑕佺殑妯℃摤娉㈠舰.

绯荤当(t菕ng)鐨勬(g貌u)鎴�

銆�銆�鐩存帴鏁�(sh霉)瀛楅牷鐜囧悎鎴愪富瑕佺敱妯欐簴鍙冭�冮牷鐜囨簮銆佺浉浣嶇疮鍔犲櫒銆佹尝褰㈠瓨鍎插櫒銆佹暩(sh霉)/妯¤綁(zhu菐n)鎻涘櫒銆佷綆閫氬钩婊戞烤娉㈠櫒绛夋(g貌u)鎴愩�傚叾涓�锛屽弮鑰冮牷鐜囨簮涓�鑸槸涓�鍊嬮珮绌�(w臎n)瀹氬害鐨勬櫠楂旀尟钑╁櫒锛屽叾杓稿嚭淇¤櫉鐢ㄤ簬DDS涓悇閮ㄤ欢鍚屾宸ヤ綔銆侱DS鐨勫璩�(zh矛)鏄皪鐩镐綅閫茶鍙帶绛夐枔闅旂殑閲囨ǎ銆�

鍎�(y艒u)缂洪粸

銆�銆�锛�1锛夎几鍑洪牷鐜囩浉灏嶅付瀵純瀵�

銆�銆�杓稿嚭闋荤巼甯跺鐐�50%fs锛堢悊璜栧�硷級銆備絾鑰冩叜鍒颁綆閫氭烤娉㈠櫒鐨勭壒鎬у拰瑷�(sh猫)瑷堥洠搴︿互鍙婂皪杓稿嚭淇¤櫉闆滄暎鐨� 鎶戝埗锛屽闅涚殑杓稿嚭闋荤巼甯跺浠嶈兘閬斿埌40%fs銆�

銆�銆�锛�2锛夐牷鐜囪綁(zhu菐n)鎻涙檪闁撶煭

銆�銆�DDS鏄竴鍊嬮枊鐠�(hu谩n)绯荤当(t菕ng)锛岀劇浠讳綍鍙嶉鐠�(hu谩n)绡�(ji茅)锛岄�欑ó绲�(ji茅)妲�(g貌u)浣垮緱DDS鐨勯牷鐜囪綁(zhu菐n)鎻涙檪闁撴サ鐭�銆備簨瀵︿笂锛屽湪 DDS鐨勯牷鐜囨帶鍒跺瓧鏀硅畩涔嬪悗锛岄渶缍�(j墨ng)閬庝竴鍊嬫檪閻樺懆鏈熶箣鍚庢寜鐓ф柊鐨勭浉浣嶅閲忕疮鍔�锛屾墠鑳藉鐝�(xi脿n)闋荤巼鐨勮綁(zhu菐n) 鎻�銆傚洜姝�锛岄牷鐜囨檪闁撶瓑浜庨牷鐜囨帶鍒跺瓧鐨勫偝杓革紝涔熷氨鏄竴鍊嬫檪閻樺懆鏈熺殑鏅傞枔銆傛檪閻橀牷鐜囪秺楂橈紝杞�(zhu菐n)鎻涙檪 闁撹秺鐭�侱DS鐨勯牷鐜囪綁(zhu菐n)鎻涙檪闁撳彲閬旂磵绉掓暩(sh霉)閲忕礆锛屾瘮浣跨敤鍏跺畠鐨勯牷鐜囧悎鎴愭柟娉曢兘瑕佺煭鏁�(sh霉)鍊嬫暩(sh霉)閲忕礆銆�

銆�銆�锛�3锛夐牷鐜囧垎杈ㄧ巼妤甸珮

銆�銆�鑻ユ檪閻榝s鐨勯牷鐜囦笉璁婏紝DDS鐨勯牷鐜囧垎杈ㄧ巼灏辨槸鍓囩浉浣嶇疮鍔犲櫒鐨勪綅鏁�(sh霉)N姹哄畾銆傚彧瑕佸鍔犵浉浣嶇疮鍔犲櫒鐨� 浣嶆暩(sh霉)N鍗冲彲鐛插緱浠绘剰灏忕殑闋荤巼鍒嗚鲸鐜囥�傜洰鍓�锛屽ぇ澶氭暩(sh霉)DDS鐨勫垎杈ㄧ巼鍦�1Hz鏁�(sh霉)閲忕礆锛岃ū澶氬皬浜�1mHz鐢� 鑷虫洿灏�銆�

銆�銆�锛�4锛夌浉浣嶈畩鍖栭�ｇ簩(x霉)

銆�銆�鏀硅畩DDS杓稿嚭闋荤巼锛屽闅涗笂鏀硅畩鐨勬瘡涓�鍊嬫檪閻樺懆鏈熺殑鐩镐綅澧為噺锛岀浉浣嶅嚱鏁�(sh霉)鐨勬洸绶氭槸閫ｇ簩(x霉)鐨�锛屽彧鏄湪 鏀硅畩闋荤巼鐨勭灛闁撳叾闋荤巼鐧�(f膩)鐢熶簡绐佽畩锛屽洜鑰屼繚鎸佷簡淇¤櫉鐩镐綅鐨勯�ｇ簩(x霉)鎬�銆�

銆�?銆�?锛夎几鍑烘尝褰㈢殑闈堟椿鎬�

銆�銆�鍙鍦―DS鍏�(n猫i)閮ㄥ姞涓婄浉鎳�(y墨ng)鎺у埗濡傝(di脿o)闋绘帶鍒禙M銆佽(di脿o)鐩告帶鍒禤M鍜岃(di脿o)骞呮帶鍒禔M锛屽嵆鍙互鏂逛究闈堟椿鍦板 鐝�(xi脿n)瑾�(di脿o)闋�銆佽(di脿o)鐩稿拰瑾�(di脿o)骞呭姛鑳�锛岀敘(ch菐n)鐢烣SK銆丳SK銆丄SK鍜孧SK绛変俊铏熴�傚彟澶�锛屽彧瑕佸湪DDS鐨勬尝褰㈠瓨鍎插櫒 瀛樻斁涓嶅悓娉㈠舰鏁�(sh霉)鎿�(j霉)锛屽氨鍙互瀵︾従(xi脿n)鍚勭ó娉㈠舰杓稿嚭锛屽涓夎娉�銆侀嫺榻掓尝鍜岀煩褰㈡尝鐢氳嚦鏄换鎰忕殑娉㈠舰銆傜暥 DDS鐨勬尝褰㈠瓨鍎插櫒鍒嗗垾瀛樻斁姝ｅ鸡鍜屼綑寮﹀嚱鏁�(sh霉)琛ㄦ檪锛屾棦鍙緱鍒版浜ょ殑鍏╄矾杓稿嚭銆�

銆�?銆�?锛夊叾浠栧劒(y艒u)榛�

銆�銆�鐢变簬DDS涓咕涔庢墍鏈夐儴浠堕兘灞簬鏁�(sh霉)瀛楅浕璺�锛屾槗浜庨泦鎴�锛屽姛鑰椾綆銆� 楂旂⿳灏�銆侀噸閲忚紩銆佸彲闈犳�ч珮锛屼笖鏄撲簬绋嬫帶锛屼娇鐢ㄧ浉鐣堕潏娲�锛屽洜姝ゆ�у児 姣旀サ楂�銆�

銆�銆�DDS涔熸湁灞�闄愭��锛屼富瑕佽〃鐝�(xi脿n)鍦細

銆�銆�锛�1锛夎几鍑洪牷甯惰寖鍦嶆湁闄�

銆�銆�鐢变簬DDS鍏�(n猫i)閮―AC鍜屾尝褰㈠瓨鍎插櫒锛圧OM锛夌殑宸ヤ綔閫熷害闄� 鍒�锛屼娇寰桪DS杓稿嚭鐨勯牷鏈夐檺銆傜洰鍓嶅競鍫翠笂閲囩敤CMOS銆� TTL銆丒CL宸ヨ棟鍒朵綔鐨凞DS宸ョ繏(x铆)鐗�锛屽伐浣滈牷鐜囦竴鑸湪骞惧崄 MHz鑷�400MHz宸﹀彸銆傞噰鐢℅aAs宸ヨ棟鐨凞DS鑺墖宸ヤ綔闋� 鐜囧彲閬�2GHz宸﹀彸銆�

銆�銆�锛�2锛夎几鍑洪洔鏁ｅぇ

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瀵︾従(xi脿n)

銆�銆�1,閲囩敤楂樻�ц兘DDS鍠墖闆昏矾鐨勮В姹烘柟妗�

銆�銆�2,閲囩敤鍒嗙珛IC闆昏矾绯荤当(t菕ng)瀵︾従(xi脿n),涓�鑸湁CPU,RAM,ROM,D/A,CPLD,妯℃摤婵炬尝鍣ㄧ瓑绲勬垚

銆�銆�3,CPLD,FPGA瀵︾従(xi脿n)

缍韩闆诲瓙閫�锛岄浕瀛愮煡璀�锛屼竴鏌ョ櫨閫�锛�

宸叉敹閷勮姊�162578鍊�