Ideal Op Amp in VHDL-AMS

[goldeboy]

vhdl ams model for opamp

Hello,

I am beginner in VHDL-AMS, I will try to model a real Op Amp in VHDL-AMS. As a begin, I hope that some one help me by giving me a simple code in VHDL-AMS of ideal op-amp.

Thank you very much

 

[smoked]

vhdl unknown identifier voltage

This might help....

 

[goldeboy]

hamster ams models

Thank you very much. yes the document is very good and useful.:|

 

[goldeboy]

vhdl-ams op amp model

In fact, this is the vhd-ams code for the ideal op-amp given by this doc:

ENTITY OpAmp IS
GENERIC (vdd : voltage := 15.0;
vss : voltage := -15.0;
gain : REAL := REAL'HIGH);

PORT (TERMINAL in_p, in_n: ELECTRICAL;
TERMINAL output: ELECTRICAL);
END ENTITY OpAmp;

ARCHITECTURE simple OF OpAmp IS
QUANTITY vin ACROSS in_p TO in_n;
QUANTITY vout ACROSS iout THROUGH output;
BEGIN
IF vin'ABOVE(vdd/gain) USE
vout == vdd;
ELSIF NOT vin'ABOVE(vss/gain) USE
vout == vss;
ELSE
vout == vin*gain;
END USE;

BREAK ON vin'ABOVE(vdd/gain), vin'ABOVE(vss/gain);
END ARCHITECTURE simple;

I am beginner in VHDL-AMS, so I have some questions about this code:
- I think that I must add some lniks in the beginnig to say what are liraries are used.
What are these libraries exactly?

- I have tried to compile and run this code by hAMSter and I have found these errors:
C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 6,ENTITY opamp) : Info : Entity/Package "opamp" overwritten

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 7,ENTITY opamp) : Error : Unknown identifier "voltage"

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 7,ENTITY opamp) : Error : Type mismatch

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 8,ENTITY opamp) : Error : Unknown identifier "voltage"

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 8,ENTITY opamp) : Error : Type mismatch

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 10,ENTITY opamp) : Error : Unknown identifier "electrical"

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 11,ENTITY opamp) : Error : Unknown identifier "electrical"

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 12,ENTITY opamp) : Error : Simulation object for entity opamp not created because of 6 errors

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 15,ARCHITECTURE simple OF ENTITY opamp) : Error : Quantity is not defined between terminals

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 16,ARCHITECTURE simple OF ENTITY opamp) : Error : Unknown identifier "Ground"

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 16,ARCHITECTURE simple OF ENTITY opamp) : Error : Quantity is not defined between terminals

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 16,ARCHITECTURE simple OF ENTITY opamp) : Error : Quantity is not defined between terminals

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 19,ARCHITECTURE simple OF ENTITY opamp) : Error : Type mismatch

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 19,ARCHITECTURE simple OF ENTITY opamp) : Error : Type mismatch

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 19,ARCHITECTURE simple OF ENTITY opamp) : Error : Type mismatch

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 20,ARCHITECTURE simple OF ENTITY opamp) : Error : Type mismatch

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 21,ARCHITECTURE simple OF ENTITY opamp) : Error : Type mismatch

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 21,ARCHITECTURE simple OF ENTITY opamp) : Error : Type mismatch

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 21,ARCHITECTURE simple OF ENTITY opamp) : Error : Type mismatch

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 22,ARCHITECTURE simple OF ENTITY opamp) : Error : Type mismatch

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 27,ARCHITECTURE simple OF ENTITY opamp) : Error : Syntax error: Unexpected entry: '

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd( 27,ARCHITECTURE simple OF ENTITY opamp) : Error : Compile/link failed because of 19 errors <Mon May 11 14:27:27 2009
>

C:\Documents and Settings\baccar\Bureau\hAMSter - Model Editor1.vhd(???,?] : Error 70015 : error with compiling



Could you help me please?

 

[hock]

ideal op-amp vhdl-ams

do not use folders with space.

unix based programs do not like it.
all cad tools were written for uxin environment.

hock

 

[goldeboy]

op amp amplifier in vhdl

thank you very much.. I am trying now to build a real op-amp model in VHDL-AMS? have you any example or document that can help me.
Thank you very much

 

[ShaunZ]

op amp vhdl-ams

thank you very much.. I am trying now to build a real op-amp model in VHDL-AMS? have you any example or document that can help me.
Thank you very much

If you are using Cadence, you can use ModelWriter

File->New->Cell View, select "ModelWriter" to start the guide.