Detailed Op Amp - MapleSim Help
For the best experience, we recommend viewing online help using Google Chrome or Microsoft Edge.

Online Help

All Products    Maple    MapleSim


Op Amp Detailed

Detailed model of an operational amplifier

 

Description

Connections

Parameters

Description

The OpAmp Detailed (or Op Amp Detailed) component is a general operational amplifier model. The model consists of five functional stages: input, gain, frequency response, slew rate, and output. Each stage contains data sheet parameters to be modeled.

Connections

Name

Description

Modelica ID

p

Positive pin of the input port

p

m

Negative pin of the input port

m

outp

Output pin

outp

psupply

Positive output voltage limitation

p_supply

msupply

Negative output voltage limitation

m_supply

Parameters

Name

Default

Units

Description

Modelica ID

Input

 

 

 

 

Rdm

2·106

Ω

Input resistance (differential input mode)

Rdm

Rcm

2·109

Ω

Input resistance (common mode)

Rcm

Cin

1.4·10−12

F

Input capacitance

Cin

Vos

0.001

V

Input offset voltage

Vos

Ib

8·10−8

A

Input bias current

Ib

Ios

2·10−8

A

Input offset current

Ios

Gain

 

 

 

 

vcp

0

V

Correction value for limiting by p_supply

vcp

vcm

0

V

Correction value for limiting by msupply

vcm

Avd0

106

 

Differential amplifier [dB]

Avd0

CMRR

90

 

Common-mode rejection [dB]

CMRR

Frequency Response

 

 

 

 

fp1

5

Hz

Dominant pole

fp1

fp2

2·106

Hz

Pole frequency

fp2

fp3

2·107

Hz

Pole frequency

fp3

fp4

1·108

Hz

Pole frequency

fp4

fz

5·106

Hz

Zero frequency

fz

Slew Rate

 

 

 

 

srp

0.5·106

Vs

Slew rate for increase

sr_p

srm

0.5·106

Vs

Slew rate for decrease

sr_m

Ts

1.2·10−6

s

sampling time

Ts

Output

 

 

 

 

Rout

75

Ω

Output resistance

Rout

Imaxso

0.025

A

Maximal output current (source current)

Imaxso

Imaxsi

0.025

A

Maximal output current (sink current)

Imaxsi

See Also

Analog Components

Electrical Library

Operational Amplifiers