Hardware Reference
In-Depth Information
I
x+
OTA
X+
n
X
2
CCII+
g
m
Z
2
Y
1
CCII+
X
1
I
x-
Y
2
X-
Z
1
z
p
Fig. 11.9 CDBA implementation using CCIIs and OTA [
41
]
a
+V
CC
Q
17
Q
18
Q
14
Q
19
Q
24
Q
25
Q
15
Q
16
Q
4
x
Q
20
Q
5
Q
6
Q
23
n
p
z
I
B
Q
22
Q
1
Q
21
Q
2
Q
3
Q
7
Q
10
Q
11
Q
12
I
C
Q
13
Q
8
Q
9
−V
EE
b
I
B
I
C
I
0
I
A
x
n
CCCDTA
p
z
Fig. 11.10 Current controlled current differencing transconductance amplifier (a) CMOS
CC-CDTA architecture (b) A CC-CDTA configured as a multiplier/divider (Adapted from [
42
]
©
2008 Elsevier)
capacitors thereby making it highly suitable for integrated circuit implementation.
This circuit can, thus, be seen to be a minimum-component biquad exhibiting these
properties.
The output current of this circuit is given by
I
in
3
s
2
C
1
C
2
R
x
þ
I
in
1
sC
2
þ
g
m
I
in
2
ð
sC
2
þ
g
m
Þ
I
o
¼
ð
11
8
Þ
:
s
2
C
1
C
2
R
x
þ
sC
2
þ
g
m
Search WWH ::
Custom Search