They also have a spice model that can be imported into ADS. -------------------------- *SPICE model for HSCH-9161 *Because of the high leakage of this diode under reverse bias, *it must be modeled as an anti-parallel pair. *D1 represents the characteristic of the HSCH-9161 under forward bias *and D2 (in the forward direction) gives the V-I curve of the HSCH-9161 under reverse bias.. * * .SUBCKT HSCH 1 2 DCD1 Â Â 1 Â Â Â 2 Â Â Â DMOD1 DCD2 Â Â 2 Â Â Â 1 Â Â Â DMOD2 C1 Â Â Â 1 Â Â Â 2 Â Â Â 0.011E-12 *Bond pad parasitics .MODEL Â DMOD1 Â Â Â D(IS=12E-6, CJO=0.03E-12, VJ=.26, BV=10, IBV=10E-12 + Â Â Â Â Â Â EG=1.42, N=1.2, RS=50, XTI=2, M=0.5) .MODEL Â DMOD2 Â Â Â D(IS=84E-6, CJO=0.03E-12, VJ=.26, BV=10, IBV=10E-12 + Â Â Â Â Â Â EG=1.42, N=40, RS=10, XTI=2, M=0.5) .ENDS --------------------------

I would first try to duplicate the plots in the datasheet. For example they show the forward current vs. forward voltage. If the results agree closely then you can continue to evaluate the part if not then it is time to contact the vendor and ask the hard questions as to why the differences.

Another area that can have significant impact is the measurement setup has to be emulated as closely as possible in the simulator. For example if you are making measurements with the part mounted on a PCB you must include the effects of the PCB in the simulator especially if you are doing any high frequency comparisons.

http://www.avagotech.com/products/produ ... 209,P88310

They also have a spice model that can be imported into ADS.

--------------------------

*SPICE model for HSCH-9161

*Because of the high leakage of this diode under reverse bias,

*it must be modeled as an anti-parallel pair.

*D1 represents the characteristic of the HSCH-9161 under forward bias

*and D2 (in the forward direction) gives the V-I curve of the HSCH-9161 under reverse bias..

*

*

.SUBCKT HSCH 1 2

DCD1 Â Â 1 Â Â Â 2 Â Â Â DMOD1

DCD2 Â Â 2 Â Â Â 1 Â Â Â DMOD2

C1 Â Â Â 1 Â Â Â 2 Â Â Â 0.011E-12

*Bond pad parasitics

.MODEL Â DMOD1 Â Â Â D(IS=12E-6, CJO=0.03E-12, VJ=.26, BV=10, IBV=10E-12

+ Â Â Â Â Â Â EG=1.42, N=1.2, RS=50, XTI=2, M=0.5)

.MODEL Â DMOD2 Â Â Â D(IS=84E-6, CJO=0.03E-12, VJ=.26, BV=10, IBV=10E-12

+ Â Â Â Â Â Â EG=1.42, N=40, RS=10, XTI=2, M=0.5)

.ENDS

--------------------------

I would first try to duplicate the plots in the datasheet. For example they show the forward current vs. forward voltage. If the results agree closely then you can continue to evaluate the part if not then it is time to contact the vendor and ask the hard questions as to why the differences.

Another area that can have significant impact is the measurement setup has to be emulated as closely as possible in the simulator. For example if you are making measurements with the part mounted on a PCB you must include the effects of the PCB in the simulator especially if you are doing any high frequency comparisons.