关于全差分折叠放大器的设计

如图，请问，偏执电压能直接用电阻来偏执产生么?看了一些资料，都得用一些偏执电路，还得用CMFB

我直接在偏执处输入我计算出来的电压，结果下面4个管老是处于线性区，是我的计算问题么?求教~谢谢

Would you please put the size information and the branch current information that flows in M3A, M2A, M3B, M2B, M4A and M4B, M6A, M1A and M1B?
Normally it's the target currents do not match with the corresponding W/L that drives the devices out of saturation region.
Good luck！

感谢你的回复~

偏执我目前按图中加入。

我希望Itail=100ua SR=10V/us
VDD=5V，VSS=0V，设Von=0.2 Vto=0.7,则VGS=0.9V kp=50,kn=110
故我令VBP=VDD-VGS4=4.1V
VBN=0.9V
VCN=1.1v
VCP=3.9v
用工作在饱和区电流与von关系得
(W/L)4,5,6,7=50
(W/L)3,12=100
(W/L)1,2=50
(W/L)8,10=23
(W/L)9,11,13=68


我的仿真代码如下

CCC 9 11 68/1
.OP
.options list node post
M1 3 17 2 2 PMOS W=50U L=1U
M2 4 18 2 2 PMOS W=50U L=1U
M3 2 1 7 7 PMOS W=100U L=1U
M4 16 1 7 7 PMOS W=50U L=1U
M5 15 1 7 7 PMOS W=50U L=1U
M6 5 13 16 16 PMOS W=50U L=1U
M7 6 13 15 15 PMOS W=50U L=1U
M8 5 10 3 3 NMOS W=23U L=1U
M9 3 8 0 0 NMOS W=68U L=1U
M10 6 10 4 4 NMOS W=23U L=1U
M11 4 8 0 0 NMOS W=68U L=1U
M12 1 1 7 7 PMOS W=100U L=1U
M13 8 8 0 0 NMOS W=68U L=1U
I1 1 0 100UA
I2 7 8 150UA
C1 6 0 10PF
C2 5 0 10PF
VDD 7 0 5
V13 13 0 3.9
V10 10 0 1.1
V+ 17 0 DC 5 AC 3
V- 18 0 DC 0
.AC OCT 20 1K 1000MEG
.DC V+ -5 5 .1
.probe ac vdb(out)
.model NMOS NMOS vto=0.70 uo=3190 LEVEL=1
.model PMOS PMOS vto=-0.70 u0=1550 LEVEL=1
.END
中间两队管目前只直接给了电压。最后在AVANWAVES中可以看到输出节点能得到基本符合我设计值的摆幅，0.4~4.6v

仿真得到的list文件中的管状态如下
**** mosfets
subckt
element0:m10:m20:m30:m40:m50:m6
model0:pmos0:pmos0:pmos0:pmos0:pmos0:pmos
regionCutoffSaturatiSaturatiSaturatiSaturatiSaturati
id0.-100.0000u -100.0000u-50.0000u-50.0000u-50.0000u
ibs0.0.0.0.0.0.
ibd9.3665f7.7326f40.2663f2.0670f2.0670f46.9744f
vgs4.0266-973.3738m -893.3044m -893.3044m -893.3044m -893.3044m
vds-936.6500m -773.2631m-4.0266-206.6956m -206.6956m-4.6974
vbs0.0.0.0.0.0.
vth-700.0000m -700.0000m -700.0000m -700.0000m -700.0000m -700.0000m
vdsat0.-273.3738m -193.3044m -193.3044m -193.3044m -193.3044m
vod4.7266-273.3738m -193.3044m -193.3044m -193.3044m -193.3044m
beta2.6762m2.6762m5.3524m2.6762m2.6762m2.6762m
gam eff527.6252m527.6252m527.6252m527.6252m527.6252m527.6252m
gm0.731.5991u1.0346m517.3187u517.3187u517.3187u
gds0.0.0.0.0.0.
gmb0.253.4629u358.4506u179.2253u179.2253u179.2253u
cdtot9.085e-2017.8013a185.3945a4.7584a4.7584a108.1402a
cgtot17.3143f11.8312f24.0396f11.9318f11.9318f12.0352f
cstot48.4999a11.5105f23.0211f11.5105f11.5105f11.5105f
cbtot17.2657f302.8616a833.0970a416.5485a416.5485a416.5485a
cgs48.4999a11.5105f23.0211f11.5105f11.5105f11.5105f
cgd9.085e-2017.8013a185.3945a4.7584a4.7584a108.1402a
subckt
element0:m70:m80:m90:m100:m110:m12
model0:pmos0:nmos0:nmos0:nmos0:nmos0:pmos
regionSaturatiLinearLinearLinearLinearSaturati
id-50.0000u50.0000u50.0000u49.9998u150.0000u -100.0000u
ibs0.0.0.0.0.0.
ibd44.1535f -591.3869a -367.2381a-1.7785f-2.0011f8.9330f
vgs-893.3044m1.0633900.1260m899.8893m900.1260m -893.3044m
vds-4.415359.1387m36.7238m177.8462m200.1107m -893.3044m
vbs0.0.0.0.0.0.
vth-700.0000m700.0000m700.0000m700.0000m700.0000m -700.0000m
vdsat-193.3044m59.1387m36.7238m177.8462m200.1107m -193.3044m
vod-193.3044m363.2762m200.1260m199.8893m200.1260m -193.3044m
beta2.6762m2.5336m7.4906m2.5336m7.4906m5.3524m
gam eff527.6252m527.6252m527.6252m527.6252m527.6252m527.6252m
gm517.3187u149.8321u275.0818u450.5860u1.4989m1.0346m
gds0.770.5541u1.2240m55.8479u114.5824n0.
gmb179.2253u51.9094u95.3022u156.1057u519.3089u358.4506u
cdtot101.6460a3.7262f10.9101f999.5724a6.2652a41.1297a
cgtot12.0287f8.0281f23.9506f6.4281f16.2095f23.8953f
cstot11.5105f4.1953f12.4915f5.2426f15.6543f23.0211f
cbtot416.5485a106.6379a548.9503a185.8742a548.9503a833.0970a
cgs11.5105f4.1953f12.4915f5.2426f15.6543f23.0211f
cgd101.6460a3.7262f10.9101f999.5724a6.2652a41.1297a
subckt
element0:m13
model0:nmos
regionSaturati
id150.0000u
ibs0.
ibd-9.0013f
vgs900.1260m
vds900.1260m
vbs0.
vth700.0000m
vdsat200.1260m
vod200.1260m
beta7.4906m
gam eff527.6252m
gm1.4991m
gds0.
gmb519.3486u
cdtot28.1817a
cgtot16.2315f
cstot15.6543f
cbtot548.9503a
cgs15.6543f
cgd28.1817a

9管和13管的电流没有被拉到150UA

差分放大器需要CMFB。

唉~我查阅到一些资料也都是这么说。光加偏执电压无法让所有管都正常工作么?

有没有哪位大大来指导下呢?不+CMFB就一定不行么。