CD4066应用电路

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时间:2009-07-19 15:50:06  来源:资料室  作者:
CD4066中文资料:CD4066是四双向模拟开关,主要用作模拟或数字信号的多路传输。引出端排列与CC4016一致,但具有比较低的导通阻抗。另外,导通阻抗在整个输入信号范围内基本不变。CD4066由四个相互独立的双向开关组成,每个开关有一个控制信号,开关中的p和n器件在控制信号作用下同时开关。这种结构消除了开关晶体管阈值电压随输入信号的变化,因此在整个工作信号范围内导通阻抗比较低。与单通道开关相比,具有输入信号峰值电压范围等于电源电压以及在输入信号范围内导通阻抗比较稳定等优点。但若应用于采保电路,仍推荐CD4016。
当模拟开关的电源电压采用双电源时,例如 =﹢5V, =﹣5V(均对地0V而言),则输入电压对称于0V的正、负信号电压(﹢5V~﹣5V)均能传输。这时要求控制信号C=“1”为+5V,C=“0”为-5V,否则只能传输正极性的信号电压。

CD4066引脚功能图

内部方框图
Absolute Maximum Ratings 绝对最大额定值: Supply Voltage电源电压(VDD) −0.5V to +18V
Input Voltage输入电压 (VIN) −0.5V to VCC+0.5V
Storage Temperature Range储存温度范围 (TS) −65℃ to +150℃
Power Dissipation功耗 (PD)
Dual-In-Line 普通双列封装 700 mW
Small Outline 小外形封装 500 mW
Lead Temperature 焊接温度(TL)
Soldering, 10 seconds)(焊接10秒) 300℃
Recommended Operating Conditions 建议操作条件: Supply Voltage电源电压(VDD) 3V to 15V
Input Voltage输入电压 (VIN) 0V to VDD
Operating Temperature Range工作温度范围 (TA) −55℃ to +125℃
DC Electrical Characteristics 直流电气特性: Symbol 符号
Parameter 参数 Conditions 条件 −55℃ +25℃ +125℃ Units 单位
最小 最大 最小 典型 最大 最小 最大
IDD Quiescent Device Current静态电流 VDD = 5V   0.25   0.01 0.25   7.5 μA
VDD = 10V   0.5   0.01 0.5   15
VDD = 15V   1.0   0.01 1.0   30
SIGNAL INPUTS AND OUTPUTS
RON “ON” Resistance RL = 10 kΩ to (VDD − VSS/2) VC = VDD, VSS to VDD
VDD = 5V   800   270 1050   1300 Ω
VDD = 10V   310   120 400   550
VDD = 15V   200   80 240   320
ΔRON Δ“ON” Resistance Between Any 2 of 4 Switches RL = 10kΩ to (VDD − VSS/2) VCC = VDD, VIS = VSS to VDD
VDD = 10V       10        Ω
VDD = 15V       5
IIS Input or Output Leakage Switch “OFF” VC = 0   ±50   ±0.1 ±50   ±500 nA
CONTROL INPUTS
VILC LOW Level Input Voltage 输入低电平电压 VIS = V SS and VDD VOS = V DD and VSS IIS = ± 10μA
VDD = 5V   1.5   2.25 1.5   1.5 V
VDD = 10V   3.0   4.5 3.0   3.0
VDD = 15V   4.0   6.75 4.0   4.0
VIHC HIGH Level Input Voltage 输入高电平电压 VDD = 5V 3.5   3.5 2.75   3.5   V
VDD=10V (Note 7) 7.0   7.0 5.5   7.0
VDD = 15V 11.0   11.0 8.25   11.0
IIN Input Current 输入电流 VDD−VSS = 15V VDD≥VIS≥VSS VDD≥VC≥VSS   −0.1    −10−5 −0.1    −0.1  μA
0.1   10−5 0.1   0.1
AC Electrical Characteristics 交流电气特性: Symbol 符号
Parameter 参数 Conditions 条件 最小 典型 最大 Units 单位
tPHL, tPLH Propagation Delay Time Signal Input to Signal Output信号输入到信号输出传递延迟时间 VC = VDD, CL = 50 pF, (Figure 1)RL = 200k
VDD = 5V   25 55 ns
VDD = 10V   15 35
VDD = 15V   10 25
tPZH, tPZL Propagation Delay Time Control Input to Signal Output High Impedance to Logical Level RL = 1.0kΩ, CL = 50pF, (Figure 2, Figure 3)
VDD = 5V     125 ns
VDD = 10V     60
VDD = 15V     50
tPHZ, tPLZ Propagation Delay Time Control Input to Signal Output Logical Level to High Impedance Sine Wave Distortion Frequency Response-Switch “ON” (Frequency at −3 dB) RL = 1.0kΩ, CL = 50pF
VDD = 5V     125 ns
VDD = 10V     60
VDD = 15V     50
VC = VDD = 5V, VSS = −5V RL = 10 kΩ, VIS = 5Vp-p, f= 1 kHz, (Figure 4)   0.1   %
VC = VDD = 5V, VSS = −5V, RL = 1 kΩ, VIS = 5Vp-p, 20 Log10 VOS/VOS (1 kHz)−dB,(Figure 4)   40   MHz
Feedthrough — Switch “OFF” (Frequency at −50 dB) Crosstalk Between Any Two Switches (Frequency at −50 dB) Crosstalk; Control Input to Signal Output Maximum Control Input VDD = 5.0V, VCC = VSS = −5.0V, RL = 1 kΩ, VIS = 5.0Vp-p, 20 Log10, VOS/VIS = −50 dB, (Figure 4)   1.25
VDD=VC(A) =5.0V; VSS = VC(B) = 5.0V, RL1kΩ, VIS(A) = 5.0Vp-p, 20 Log10, VOS(B)/VIS(A) = −50dB (Figure 5)   0.9   MHz
VDD =10V,RL=10kΩ, RIN=1.0kΩ,VCC=10V Square Wave, CL =50pF(Figure 6)    150   mVp-p
RL=1.0kΩ, CL=50pF, (Figure 7)VOS(f) = ½ VOS(1.0 kHz)
VDD = 5.0V   6.0   MHz
VDD = 10V   8.0
VDD = 15V   8.5
CIS Signal Input Capacitance信号输入电容     8.0   pF
COS Signal Output Capacitance信号输出电容 VDD = 10V   8.0   pF
CIOS Feedthrough Capacitance馈电容 VC = 0V   0.5   pF
CIN Control Input Capacitance控制输入电容     5.0 7.5 pF



图1 CD4066是四双向模拟开关驱动继电器应用电路
CD4066是四双向模拟开关,集成块SCR1~SCR4为控制端,用于控制四双向模拟开关的通断。当SCR1接高电平时,集成块①、②脚导通,+12V→K1→集成块①、②脚→电源负极使K1吸合;反之当SCR1输入低电平时,集成块①、②脚开路,K1失电释放,SCR2~SCR4输入高电平或低电平时状态与SCR1相同。