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ADS CGH35 R6-Instructions

The document provides installation instructions for Cree's GaN HEMT large signal transistor models in ADS. It describes downloading the zip file, using the DesignKit menu to install the library, and selecting the models from the component palette. Key device parameters like gate voltage range and thermal properties are also summarized. Contact information is provided for additional support.

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162 views1 page

ADS CGH35 R6-Instructions

The document provides installation instructions for Cree's GaN HEMT large signal transistor models in ADS. It describes downloading the zip file, using the DesignKit menu to install the library, and selecting the models from the component palette. Key device parameters like gate voltage range and thermal properties are also summarized. Contact information is provided for additional support.

Uploaded by

lee tjtj
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOC, PDF, TXT or read online on Scribd
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4600 Silicon Drive, Durham, North Carolina, USA 27703

ADS Installation Notes for Cree GaN HEMT Large Signal Models

This instruction sheet covers the installation in ADS for Cree’s CGH35015F, CGH35015P, CGH35030F,
CGH35030P and CGH35060F GaN HEMT models.

1. Remove “ADS_”.
2. **Important** Save the .zip file to disk.
3. Start up ADS and look for the drop-down menu in main window titled "DesignKit."
4. Choose the option "Install Design Kits." (Note: A window will pop up with Steps).
5. Use ADS step 2 "Define Design Kit" and browse to the kit file.
6. At the bottom of this ADS window you can select user level, project level, etc.
Then click OK.
Note: This will install the kit.
7. Open a design window and select model from the palette.
Note: Here you can pick and place the models.
8. The Gate voltage is -3.0 < Vg < -1.5, with pinch off ~2.9 Volts. Vd is valid
from ~28V to ~48V

Additional details regarding the use of this model:


1. Port designations.
a. Port 1 = Gate
b. Port 2 = Drain
c. Port 3 = Source
d. Port 4 = Temperature Monitor
2. Tcase = Case temperature for the device.
3. RTH = Thermal resistance Theta-jc (junction to case). This is a product specific number. Confirm the default RTH
equals the published data sheet specification. It is advised that you do not change this value from the published
specification.
4. Port 4 = Port 4 of the device acts as a temperature monitor. When monitored with a DC voltmeter it will give a
voltage, which is equivalent to the rise in temperature (degrees Celsius). This is the temperature the junction of
the transistor will experience under actual operating conditions. This number will need to be added to Tcase, the
case temperature, to determine the actual junction temperature. This port can be used to plot the rise in junction
temperature vs. output if desired.
5. The models will work in ADS2005 and versions more recent than 2005. We cannot support ADS versions prior to
2005.

Models Created by Bill Pribble, Cree, Inc.

In the event that additional support is required, please contact Ryan Baker at ryan_baker@cree.com

Note: If the .zip file installs successfully, but does not appear in the palette, there is an alternate path to the models.
Insert > Component > Component Library > Encoded Library

CREE CONFIDENTIAL
www.cree.com/wireless

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