电流源电路如图所示,VDD = VSS =5V,T1~T3的VTN = 2V,l = 0,而Kn1 = Kn3 = 0.25 [img=45x17]17de764eeaf8a32.jpg[/img],则IREF = mA和IO = mA。[img=189x237]17de764effa58b4.jpg[/img]
A: 2.25,0.9
B: 22.5,0.9
C: 1,0.1
D: 5,0.2
A: 2.25,0.9
B: 22.5,0.9
C: 1,0.1
D: 5,0.2
举一反三
- 电路如图所示。设电流源电流I=1mA、VDD=VSS=10V,Rd=7.9kΩ,CS很大,对信号可视为短路。T的Kn=1mA/V2,l = 0且MOS管有合适的静态工作点。则T的gm为( ),电路的小信号电压增益为 ( )。[img=436x425]1802df77befd5be.png[/img] A: 2 mA/V,-15.8 B: 2 mA/V,-7.9 C: 1 mA/V,-15.8 D: 1 mA/V,-9 E: 3 mA/V,-7.9
- 电路如图所示。设电流源电流I=1mA、VDD=VSS=10V,Rd=9kΩ,CS很大,对信号可视为短路。场效应管的Kn=1mA/V2,l = 0。则场效应管的gm为 _______,电路的小信号电压增益为 _______ 。[img=213x214]1802d7cca4da94e.jpg[/img] A: 2 mA/V,-18 B: 2 mA/V,-9 C: 1 mA/V,-18 D: 1 mA/V,-9 E: 3 mA/V,-9
- 电流源电路如图所示,VDD = VSS =5V,T1~T3的... mA和IO = mA。
- 电路如图所示。设电流源电流I=0.5mA、VDD=VSS=5V,Rd=9kΩ,CS很大,对信号可视为短路。场效应管的VT=0.8V,Kn=1[img=46x18]1802ebb4ab623f7.jpg[/img],l = 0。则场效应管的gm » _______,电路的小信号电压增益约为 _______ 。[img=224x227]1802ebb4b67ecf5.jpg[/img] A: 1.42 mA/V,12.78 B: 3.02 mA/V,-27.2 C: 1.42 mA/V,-12.78 D: 3.02 mA/V,-12.78
- 电路如图所示。设电流源电流I=0.5mA、VDD=VSS=5V,Rd=9kΩ,CS很大,对信号可视为短路。场效应管的VT=0.8V,Kn=1[img=46x18]1803a89021100c3.jpg[/img],l = 0。则场效应管的gm » _______,电路的小信号电压增益约为 _______ 。[img=224x227]1803a8902c5f59c.jpg[/img] A: 1.42 mA/V,12.78 B: 3.02 mA/V,-27.2 C: 1.42 mA/V,-12.78 D: 3.02 mA/V,-12.78