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Nexxim Simulator >
Nexxim Component Models >
BJTs >
   Level 9 VBIC99 BJT Model       

Level 9 VBIC99 BJT Model

The .MODEL statement for the Level 9 VBIC99 BJT specifies values for one or more model parameters.

.MODEL modelname NPN LEVEL=9 [modelparameter=]val] ...

or

.MODEL modelname PNP LEVEL=9 [modelparameter=]val] ...

 


Level 9 VBIC99 BJT Model Basic Parameters

Model Parameter

Description

Unit

Default

LEVEL

9 is required to select the Level 9 BJT model

None

1 (default if LEVEL parameter is omitted)

ART

Smoothing parameter for reach-through

None

0.1

AVC1

Base-collector avalanche parameter 1

Volt-1

0.0

AVC2

Base-collector avalanche parameter 2

Volt-1

0.0

DEAR

Delta activation energy for ISRR

electron-Volt

0.0

EA

Activation energy for IS

electron-Volt

1.12

EAIC

Activation energy for IBCI/IBEIP

electron-Volt

1.12

EAIE

Activation energy for IBEI

electron-Volt

1.12

EAIS

Activation energy for IBCIP

electron-Volt

1.12

EANC

Activation energy for IBCN/IBENP

electron-Volt

1.12

EANE

Activation energy for IBEN

electron-Volt

1.12

EANS

Activation energy for IBCNP

electron-Volt

1.12

EAP

Activation energy for ISP

electron-Volt

1.12

EBBE

exp(-VBBE / (NBBE ´ Vtv))

None

0.0

GAMM

Epitaxial doping factor

None

0.0

HRCF

High current RC factor

None

0.0

IBBE

Base-emitter breakdown current

Amp

1.0e-6

IBCI

Ideal base-collector saturation current

Amp

1.0e-16

IBCIP

Ideal parasitic base-collector saturation current

Amp

0.0

IBCN

Non-ideal base-collector saturation current

Amp

0.0

IBCNP

Non-ideal parasitic base-collector saturation current

Amp

0.0

IBEI

Ideal base-emitter saturation current

Amp

1.0e-18

IBEIP

Ideal parasitic base-emitter saturation current

Amp

0.0

IBEN

Non-ideal base-emitter saturation current

Amp

0.0

IBENP

Non-ideal parasitic base-emitter saturation current

Amp

0.0

IKF

Forward knee current. Zero represents infinite current.

Amp

0.0

IKP

Parasitic knee current. Zero represents infinite current.

Amp

0.0

IKR

Reverse knee current. Zero represents infinite current.

Amp

0.0

IS

Transport saturation current

Amp

1.0e-16

ISP

Parasitic transport saturation current

Amp

0.0

ISRR

Reverse transport saturation current

Amp

1.0

ITF

Coefficient of TF dependence on Ic

Amp

0.0

LAMBDA

 

 

0.0

MC

Base-collector grading coefficient

None

0.33

ME

Base-emitter grading coefficient

None

0.33

MS

Substrate-collector grading coefficient

None

0.33

NBBE

Base-emitter breakdown emission coefficient

None

1.0

NCI

Ideal base-collector emission coefficient

None

1.0

NCIP

Ideal parasitic base-collector emission coefficient

None

1.0

NCN

Non-ideal base-collector emission coefficient

None

2.0

NCNP

Non-ideal parasitic base-collector emission coefficient

None

2.0

NEI

Ideal base-emitter emission coefficient

None

1.0

NEN

Non-ideal base-emitter emission coefficient

None

2.0

NF

Forward emission coefficient

None

1.0

NFP

Parasitic forward emission coefficient

None

1.0

NKF

High-current Beta rolloff parameter

None

0.5

NR

Reverse emission coefficient

None

1.0

PC

Built-in base-collector potential

Volt

0.75

PE

Built-in base-emitter potential

Volt

0.75

PS

Built-in substrate-collector potential

Volt

0.75

QBM

Base charge model selection

None

0.0

QTF

Variant of TF with base-width modulation

Second

0.0

RBI

Intrinsic base resistance

Ohm

1.0e-5

RBP

Parasitic base resistance

Ohm

1.0e-5

RBX

Extrinsic base resistance

Ohm

1.0e-5

RCI

Intrinsic collector resistance

Ohm

1.0e-5

RCX

Extrinsic collector resistance

Ohm

1.0e-5

RE

Emitter resistance

Ohm

1.0e-5

RS

Substrate resistance

Ohm

1.0e-5

TF

Forward transit time

Second

1.0e-11

TNBBE

Temperature coefficient of NBBE

None

0.0

TR

Reverse transit time

Second

1.0e-11

TREF (TNOM)

Nominal circuit temperature

°C

25

TVBBE1

Linear temperature coefficient of VBBE

None

0.0

TVBBE2

Quadratic temperature coefficient of VBBE

None

0.0

VBBE

Base-emitter breakdown voltage

Volt

0.0

VEF

Forward early voltage. Zero represents infinite voltage

Volt

0.0

VER

Reverse early voltage. Zero represents infinite voltage

Volt

0.0

VO (V0)

Epitaxial drift saturation voltage

Volt

0.0

VRT

Reach-through voltage for Cbc limiting

Volt

0.0

VTF

Coefficient of TF dependence on Vbc

Volt

0.0

WBE

Portion of IBEI derived from Vbei,
(1-WBE) derived from Vbex

None

1.0

WSP

Portion of ICCP derived from Vbep,
(1-WBE) derived from Vbci

None

1.0

XTF

Coefficient of TF bias dependence

None

0.0


 


Level 9 VBIC99 BJT Model Capacitance and Charge Parameters

Model Parameter

Description

Unit

Default

AJC

Base-collector capacitance smoothing factor

None

-0.5

AJE

Base-emitter capacitance smoothing factor

None

-0.5

AJS

Substrate-collector capacitance smoothing factor

None

-0.5

CBCO (CBC0)

Extrinsic base-collector overlap capacitance

Farad

0.0

CBEO (CBE0)

Extrinsic base-emitter overlap capacitance

Farad

0.0

CCSO

Fixed collector-substrate capacitance

Farad

0.0

CJC

Base-collector intrinsic zero-bias capacitance

Farad

0.0

CJCP

Substrate-collector zero-bias capacitance

Farad

0.0

CJE

Base-emitter zero-bias capacitance

Farad

0.0

CJEP

Base-collector extrinsic zero-bias capacitance

Farad

0.0

FC

Forward bias depletion capacitance limit

None

0.9

QCO (QC0)

Epitaxial charge parameter

Coulomb

0.0


 


Level 9 VBIC99 BJT Model Temperature Coefficient Parameters

Model Parameter

Description

Unit

Default

TAVC

Temperature exponent of AVC2

°K-1

0.0

TNF

Temperature exponent of NF

°K-1

0.0

XII

Temperature exponent of IBEI/IBCI/IBEIP/IBCIP

None

3.0

XIKF

Temperature exponent of IKF

None

0.0

XIN

Temperature exponent of IBEN/IBCN/IBENP/IBCNP

None

3.0

XIS

Temperature exponent of IS

None

3.0

XISR

Temperature exponent of ISRR

None

0.0

XRB (XRBI)

Temperature exponent of RBI

None

0.0

XRBP

Temperature exponent of parasitic base resistance

None

0.0

XRBX

Temperature exponent of extrinsic base resistance

None

0.0

XRC (XRCI)

Temperature exponent of RCI

None

0.0

XRCX

Temperature exponent of extrinsic collector resistance

None

0.0

XRE

Temperature exponent of RE

None

0.0

XRS

Temperature exponent of RS

None

0.0

XVO (XV0)

Temperature exponent of VO

None

0.0


 


Level 9 VBIC99 BJT Model Noise Parameters

Model Parameter

Description

Unit

Default

AFN

Base-emitter flicker noise exponent

None

1.0

BFN

Base-emitter flicker noise 1/f dependency

None

1.0

KFN

Base-emitter flicker noise constant

None

0.0


 


Level 9 VBIC99 BJT Model Self-Heating Parameters

Model Parameter

Description

Unit

Default

RTH

Thermal resistance

°K/Ohm

0.0

CTH

Thermal capacitance

Joule/°K

0.0


 


Level 9 VBIC99 BJT Model Excess Phase Parameter

Model Parameter

Description

Unit

Default

TD

Forward excess-phase delay time

Second

0.0


 

VBIC99 BJT Model Netlist Example

.MODEL bjtvbic99 NPN LEVEL=9

 




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