频率-电压转换器电路课程设计实验报告

模拟电子技术课程设计课程设计名称：专

业班

级学姓名指导师：XX年月XX日———XX月XX日

目录.......................................................................................................................31.1设计目的、要求及技术指标....................................................................................3一设计目的...................................................................................................................31.2电路主要框图............................................................................................................1.3设计...........................................................................................................................41.4电路原理...................................................................................................................4.计...........................................................2.1比较器........................................................................................................................5路图....................................................................................................................5作理................................................................................................................2.2频率电转器......................................................................................................6内部理图................................................................................................工作....................................................................................................7外接....................................................................................................92.3反相器......................................................................................................................10相电图......................................................................................................作理参计..........................................................................................102.4反相加法器..............................................................................................................11相法电..............................................................................................11工原及数算.........................................................................................12VR值获........................................................................................................133.体路图.................................................................................................................13.........................................................................................................................13题.............................................................................................................14..............................................................................................................................14.........................................................................................................................15

流器流器一、电路计1.1设计目的、要求及术指标一设目率路LM331的设在～4KHz在2V～10V范围内线性变化；块LM3311.2电路主要框图正输信400Hz~4000Hz

方波

直过零比较0.4V

0.4V2V~4V10V转换器

~4V

反相器

反相加法器参考电压

1.3设计）本次）比较，（3）F/V变换LM331构在0.4-4V。（4为1片OP07OP07在2-10V1.4电路原理

二.部分电路设计,参数计算，器件选择及其介绍2.1比较器2.1.1电路图比较器仿真图2.1.2工作原号Vi压号Vi则加在远号Vi0，VO=VOL；当输入信号Vi于，VO=VOH。当Vi在压VREF附近有值VOH值值

2.2频率-电压转化器2.2.1部理端出)端链)

2.2.2作理,由平,所以高平)，=0V经RtCCtV按指数规S与Ct使C充，VCLLC的时间，V增大RttCtCCS=0=0，C、C再次1.1RtLttC放tLR上就得到一个直流电压LoV与foiC为i×CLtt

iC为Lo

L当LVC）×fotti

L

中，I=1.90V/R

S中即2脚上的电压V2.09o

RR

LS

RftiR、C、R，fVSttLoiof之间iV为一定植，可调节R的大小。恒流源电ioSI允许故190kkS般R在10kΩS

2.2.2接路x

VCC，CC以R=50kΩ取kΩxV2.09o

RR

LS

Rfti取RkΩSV=foi

–3

VV频oi

Vo和fi的关系Fi(Hz)Vo(V)

4000.4

8000.8

20002.0

30003.0

40004.02.3反相器2.3.1反相器路反相器仿真图2.3.2工作原及数算因

放OP07

的5-1-3L为100取R=100kΩ。L的=-1，u以=R4L阻//Rk取R=51k5L452.4反相加法器2.4.1反相加器路

反向加法器仿真图2.4.2工原及数算（1知V=-f×10Vo3o2iV0=-(R10/R6)f-3i

f时，=2Viof，V=10Vio即／9+fi/450）V（2）（（）式－取R=R=20k109-3=fi/450i∴R取R=9.1k66阻R≈R//R//Rk111069

ii2.4.3VR值的取证VR的值直接从-12v//R+R//R89w2789取R=1kΩ,RΩ,则R//Rk8989R，R7w取R73.总体电路4.测试数据f(Hz)

V

V

V

400800

-0.4-0.81-1.22-2.02-2.53-3.04-4.04

0.420.851.272.112.643.264.20

1.992.893.