电子教案《数字电子技术基础》(第三版 周良权)第7章

经典word整理文档，仅参考，双击此处可删除页眉页脚。本资料属于网络整理，如有侵权，请联系删除，谢谢！第7章//数转换器二RVN8cab×√√.V:u式NO补1024N(7.2.10):uBV.REFO27C(H)21671612(636)211006F(H)01661615(111)21101BD(H)=116111613(445)21100反1(8(21补8101006F(H)01661615(111)21补1BD(H)=116111613(445)21补:uO:uO1BD(H):uO:u补O·补:uO补:uO2VVREFn1RIDREF2RR2n1n1n12VVn2ID2RR2n1n2n22VV3nID2R2n3Rn32n1M2V1ID12n11R2V0ID2n10R0IR故EuONf12MBEV）RRf其N1316916(217)10B1012D故uR2R8On111==EquatV811==22设D的N90VBV则IN,IRBRBi2BBon.VVuIIRREFNBRRB210ROO1BfBRfB当Du5V190ODVV则u(21)105VLR为REF21010BSOR10BM当Du5V90OT4·n1VIIREFNN,2n1RNiBBi0VVB10则u0105V②LREF210O10VB5VVB5V21105VREF1021010101VV21010VREFVREF10VuREFNREF10N2V9210OBB10uO图题7.13电路双极性输出电压与输入数码关系表输入数码输出模拟电压uO1111111111V1111111110VMM010101VMM00000000000000000010VVN)为37C(H)=(1101111100)(0101111100)(380)B补补210）Vu3.71110uVuo1REFR101.289V2R10210OfR11（2）当（N）为17C(H)=(0101111100)(1101111100)(892)作B补）补210VuNB·8.71110Vuuo1REFR103.711VOR2Rf1021011例.VuNNN2OBBB而QQQQ0DQ翻3210Q为的UDDDDD由D，3210UD数.而值根据DD的数码每变化递增或递减一位，输出变化值为uu30OOV1其uO数码输入O000000001100001111000011001100010101010109.76519.5329.3039.0048.4258.5968.1678.1287.89u.O图题解7.15u21.(21)为nnn.）811·V因215V.88V2REF11位0.2%故21.n21n根据图示电路,uIDD.根uuioi20DQ、DQQQQQQ，DQQQQQQQ24616424207654321=QQQQQQQ7654321uI表题解7.17输入电压u与寄存器状态和输出数字关系I765Q4321210I100~V10111111~V1535V1515REF57V79V15REF9V15REFVREFuVIREFu0u00u0OOOu0G.OnQn1T2t222T.当fcp120kHznnncpfcp·1为22n22t33U10V10VUomI10V.1utu2tnO1I11111故210285.3kRutn0.11061203CI2nNuVREFI当4V4uNI2当1.5V