Hardware Reference
In-Depth Information
a
i
Y
V
Y
Y
i
XN
i
Z
DCCII
V
XN
Z
X
N
i
XP
V
XP
X
P
b
+V
DD
P
MO
S Current Repeater
PMOS CM-1
P
MO
S C
M
-2
M
2
M
3
M
1
M
4
Z
Y
X
N
X
P
I
0
M
5
M
8
M
7
M
6
NMOS CM-2
NMOS CM-3
NMOS CM-1
−V
SS
Fig. 10.25
The CMOS implementation of the DCCII proposed by Metin et al. [
65
](
a
) The block
diagram (
b
) simplified representation with all MOS current mirrors and repeaters represented
symbolically
10.2.26 Floating Current Conveyors
Floating Current Conveyors (FCC) were introduced by Soliman and Saad in
[
66
]. An FCC is a four-port element characterized by V
y
¼
V
x
,I
y
¼
0, I
Z+
¼
+I
x
and I
Z_
¼
as
special cases. Similarly, floating ICCIIs have also been defined in [
66
]. These
elements are easily realizable in CMOS and are useful in some situations, such as
in realizing two output VCVS. Investigation of other applications is open to
investigation.
2I
x
. The floating CCII, thus, includes both CCII+ and CCII
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