Vendor Models

Premium SPICE models and WCCA support for radiation-hardened components.
Partnering with Analog Devices and Frontgrade for mission-critical applications.

Analog Devices Models

AEi Systems and Analog Devices have teamed up to provide you with SPICE models and Worst Case Circuit Analysis Support for ADI's entire line of Rad-Hard products.

AEi Systems Model Listings

Shown below is a list of the Rad-Hard Analog Devices IC models that are now available to AEi Systems' current WCCA and SPICE (engineering services) customers. Click the link for the model you would like to request or to obtain further information on ways to purchase the models.

  • RH117 – Adjustable Regulator
  • RH1009 - 2.5V Shunt Reference
  • RH1021 - 7V/10V Shunt Reference
  • RH1021 - 5V Series Reference
  • RH1084 - 5A Positive Adjustable LDO
  • RH1085 - 3A Positive Adjustable LDO
  • RH1086 - 1.5A Positive Adjustable LDO
  • RH1185 - Neg. Adjustable LDO
  • RH137 - Negative Adjustable Regulator
  • RH1959 - 500kHz Switching POL up to 4.5A, Now Available!
  • RH3845 - Switcher, Coming Soon, please inquire
  • RH3080 - Adjustable 0.9A LDO
  • MSK5800 - Positive Adjustable Linear Regulator
  • MSK5810 - Positive Adjustable Linear Regulator
  • MSK5820 - Fixed Output LDO (1.5 1.8 1.9 2.5 2.8 3.3 or 5V)*

* Please specify which voltage(s) you would like in the "Comments" field after clicking.

Note: All models are accurate for 25°C and typical performance. Other part characteristics modeled, or not modeled, are documented in the supplied model documentation.

Each model is distributed with the PSpice model .LIB file, OrCAD .OLB symbol, sample applications circuit, and correlation data showing the simulation-bench performance comparison.

Please note: the LTxxxx models supplied with LTspice® software cannot be used for simulation of their Radiation-Hardened counterparts. For example, you cannot simulate an RH1573 with an LT1573. The actual parts are not identical, so many dynamic characteristics of the model (stability, step load, etc.) are not the same.

ADI OPAMP Model Support

AEi Systems now offers SPICE models for RH Opamps.

  • RH101A – Opamp
  • RH6200A – Opamp
  • RH1498, RH1013/14, NOW Included in the Power IC Model Library! Please inquire for other models.

Model Support

AEi Systems is pleased to provide support for model usage for AEi Systems' current WCCA and SPICE customers. For questions relating to the OrCAD schematic tool or the PSpice simulator, please contact the provider of those tools, which is generally EMA-EDA or Cadence.

Support for Other Analog Simulation Syntaxes

AEi Systems can provide translations of the models for use with other simulators (ADS, LTspice, Simplis, etc.). Please contact us for pricing and options.

Sample WCCA Reports Available for Review

  • 1.5V Output - MSK5820 (RH1573) Regulator WCCA
  • 5.0V Output - MSK5972 (RH117) Regulator WCCA
  • 1.8V Output - RH1086 Regulator WCCA
  • 2.5V Output - RH1085 Regulator WCCA
  • 3.3V Output - RH1084 Regulator WCCA
  • 1.2V Output - RH3080 Regulator

This WCCA is typical of the analyses required by most space programs and is TOR compliant.

These WCCA reports are covered under ITAR regulations. A special license is required for foreign distribution. There is a $500 charge for the license. There is no charge if the recipient is a U.S. Citizen/Green Card holder and resides in the United States or U.S. territories.

It includes the analyses for stability, step load, conducted susceptibility, shutdown threshold, headroom, regulation, short circuit, over-current, and start-up.

Note: ADI, LT, LTC, and LTspice are registered trademarks of Analog Device Corporation. All other trademarks are the property of their respective owners.

Frontgrade Regulator Models

AEi Systems and Frontgrade have teamed up to provide you with SPICE models and Worst Case Circuit Analysis Support for Frontgrade’s line of Rad-Hard Voltage Regulator products.

AEi Systems Model Listings

Shown below is a list of the Rad-Hard Cobham (Aeroflex) Voltage Regulator IC models that are now available for AEi Systems' current WCCA and SPICE (engineering services) customers. The VRG Series is classified as Commerce 9A515. Click the link for the model you would like to request or to obtain further information on ways to purchase the models.

  • VRG8601/02 - RH117/RH137 – Pos./Neg. Adjustable Regulators
  • VRG8660/VRG8607/08 - RH117 – Pos. Adjustable Regulators
  • VRG8661/VRG8609/10 - RH137 – Neg. Adjustable Regulators
  • VRG8684/VRG8687/VRG8688 - RH1084 - 5A Positive Adjustable LDO
  • VRG8662/VRG8657/VRG8658 - RH1086 - 1.5A Positive Adjustable LDO
  • VRG8663 - RH1185 - Neg. Adjustable LDO
  • VRG8666/VRG8667/VRG8668 - RH3080 - Adjustable 0.9A LDO

Note: All models are accurate for 25°C and typical performance. Other part characteristics modeled, or not modeled, are documented in the supplied model documentation.

Each model is distributed with the PSpice syntax model .LIB file, OrCAD .OLB symbol, sample applications circuit, and correlation data showing the simulation-bench performance comparison. Other model configurations are available for a small fee.

Please note: the Analog Devices LTxxxx models supplied with LTspice® software CANNOT be used for simulation of their Radiation-Hardened counterparts. For example, you cannot simulate an RH117 with an LT117. The actual parts are not identical, so many dynamic characteristics of the model (stability, step load, etc.) are not the same.

Model Support

AEi Systems is pleased to provide support for model usage for AEi Systems' current WCCA and SPICE customers. For questions relating to the OrCAD schematic tool or the PSpice simulator, please contact the provider of those tools, which is generally EMA-EDA or Cadence.

Support for Other Analog Simulation Syntaxes

AEi Systems can provide translations of the models for use with other simulators. Please contact us for pricing and options.

Do You Need Worst Case Analysis?

If you have a circuit using one or more of ADI’s Rad-Hard devices and need a WCCA or other SDRL (e.g., Stress & Derating, FMECA, radiation analysis), please contact AEi Systems for a quotation. There is no charge for initial consultations.

Please note that you cannot use LTspice models for worst case analyses. A valid worst case analysis requires that you take into account various IC model characteristics with end-of-life tolerances due to aging and radiation. LTspice models are encrypted, as are the models available for download on this page. Therefore, they cannot be toleranced. You can use the models on this page for nominal analyses. When you are at the point that you need a worst case circuit analysis (WCCA), AEi Systems can perform that analysis for you.

Sample WCCA Reports Available for Review

  • 1.8V Output - VRG8662 - RH1086 Regulator WCCA
  • 3.3V Output - VRG8684 - RH1084 Regulator WCCA
  • 1.2V Output - VRG8666 - RH3080 Regulator WCCA

This WCCA is typical of the analyses required by most space programs and is TOR compliant. These WCCA reports are covered under ITAR regulations (the models are not). They include the analyses for stability, step load, conducted susceptibility, shutdown threshold, headroom, regulation, short circuit, over-current, and start-up.