# design CCII HSPICE

#### fat_123

##### Member level 1
hi everyone,

I want to simulate CCII circuit and find out its parameters like current gain, voltage gain, the impedance at X, Y and Z ports, bandwidth.
I am facing difficulty in doing analysis and connecting inputs and how to find impedance and all.
Can anyone please suggest to me about its analysis? If not, then any source from where I can resolve my issue.

regards

##### Super Moderator
Staff member
Does CC mean current conveyor?

X, Y, Z are labelled in the box.
Another CCII is built from several mosfets.

Falstad's is the only place I've seen reference to a current conveyor. Free to download and use:

### fat_123

points: 2

#### fat_123

##### Member level 1
yes, its current conveyor.

but if I want to find out impedance at different ports then what type of input and analysis should be done?
how to do this in HSPICE

#### fat_123

##### Member level 1
also how much load resistance or capacitance should be connected?

#### LvW

hi everyone,

I want to simulate CCII circuit and find out its parameters like current gain, voltage gain, the impedance at X, Y and Z ports, bandwidth.
I am facing difficulty in doing analysis and connecting inputs and how to find impedance and all.
Can anyone please suggest to me about its analysis? If not, then any source from where I can resolve my issue.
regards
What kind of "difficulty"?
Very often I have analyzed CC-circuits with PSpice - in particular Analog Devices AD844....

#### fat_123

##### Member level 1
if i want to find current gain, then what input should i apply at X,Y and Z PORT
and for impedance RX, RY and RZ, how to find the impedance plot and how to connect input ?

#### LvW

You have nothing to do than to apply the DEFINITION for the various quantities.
The current gain is defined as the ratio output-current-to-input-current.
Example: Why not applying a current at the (low-resistive) current input node and measure/simulate the output current?

#### fat_123

##### Member level 1
but for flow of current, resistor and voltage should be applied.?
can I do like this:
RX X T 100ohm
V1 T 0 ac 1
RZ Z 0 1K
or simply apply current : Ix X 0 AC 1 at X terminal
--- Updated ---

and putting VY Y 0 DC 0?