Download microelectronics lab 4 (report) - GUC

Faculty of Information Engineering & Technology
Electrical & Electronics Department
Course: Advanced Microelectronics Lab ELCT905
Dr. Eman A. Soliman
Dr. Ahmed H. Madian
MICROELECTRONIC LAB 7
(REPORT)
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Grade:
/10
1
Fully Differential Second Generation
Current Conveyor (FDCCII+)
I.
Common Mode Estimator Circuit
a. Simulation Results
II.
Fully Differential Current Conveyor with Common Mode
Feedback Circuit
a. Simulation Results
III.
Applications
a. FDCCII+ based Voltage Amplifier
b. FDCCII+ based Lossy Voltage Integrator
2
I
Common Mode Estimator Circuit
VDD
M34
M35
M28
M37
M36
VCMFB
M38
M26
M27
VCM_req
M30
M31
M32
Vin+
Vin-
M40
Voav
M42
M29
Vb5
M39
M33
M41
M43
Vb4
VSS
1. Simulation Results:
Using the aspect ratios given in the Table 1 and 2 with supply voltages of ±0.5V and 90nm
model find the following simulations:
3
a) The common mode voltage Voav when the input voltage is fully differential signal
b) The common mode voltage Voav when the input voltage is single ended signal
4
II CMOS Fully Differential Current Conveyor with CMFB
Circuit
VDD
M17
M25
VCMFB
M22
M18
M15
M5
M24
M6
VCMFB
M13
M9
Vb1
Compensation
Circuit
ZM23
M1
XM16
M20
Compensation
Circuit
M2
Y- Y+
M3
M4
M14
X+
M10
M7
M19
M11
Vb2
M12
Z+
M21
M8
Vb3
VSS
1.
Simulation results:
Using Virtuoso with 90nm model and ±0.5V supply voltages, evaluate the following simulations.
a) VYd-VXd DC characteristic under open circuit loading conditions
5
b) The voltage transfer characteristics for Vin =1mV ac while driving a load of 20kΩ.
c) The transient response to a 100 kHz square wave input with amplitude 0.25V.
6
d) Izd- Ixd DC characteristics under short circuit loading condition at Z terminal
e) The X-terminal offset voltage VXoff while Y and Z are grounded and the rx.
7
III. FDCCII+ based Voltage Amplifier
+
Z1
Y1
Vin
-
FDCC
Y2
X1
X2
Z2
+
Vout
-
R2
R1
a. Find the transfer function of the voltage amplifier shown in figure
b. Using PSPICE verify the Transfer function obtained from A, choose R1=
1kΩ and R2 is a variable resistance with values 1,2,3,4kΩ
- Vout/Vin (DC sweep)
8
IV. FDCCII+ based Lossy Voltage Integrator
+
Z1
Y1
FDCC
Vin
-
Y2
X1
X2
Z2
+
Vout
-
C
R2
R1
c. Find the transfer function of the Lossy voltage integrator shown in figure
d. Using PSPICE verify the Transfer function obtained from A, choose R1=R2 =1kΩ ,
C=0.1nF and Vin is a square wave function with 0.1 Vp-p and frequency 1MHz
- Vout and Vin (transient analysis)
9
Transistor
W(µm)
L(µm)
M1, M2, M3, M4
15
0.36
M5, M6
0.18
0.18
M7, M8
10
0.54
M9, M10, M13, M14
1
0.9
M11, M15, M20, M22
30
0.36
M12, M16, M21, M23
15
0.36
M17
28
0.18
M18
14
0.18
M19
20
0.36
M24, M25
0.18
0.18
M26, M27
0.36
0.18
M28
0.99
0.09
M29
20
0.18
M30, M31, M32, M33
5
0.18
M34, M35, M36, M37
5
0.65
M38, M39, M40, M41
1
0.09
M42, M43
0.18
0.09
Biasing Voltage
Value
Vb1
0.085V
Vb2
-0.136V
Vb3
-0.1V
Vb4
-0.1V
Vb5
0V
VCM,req
0V
10