DEMO-HMPP-389T Datasheet, PDF (6/12 Pages) Broadcom Corporation. – MiniPak Surface Mount RF PIN Switch Diodes

Linear Equivalent Circuit
In order to predict the performance of the HMPP-3890 as
a switch, it is necessary to construct a model which can
then be used in one of the several linear analysis programs
presently on the market. Such a model is given in Figure
16, where R_S + R_j is given in Figure 1 and C_j is provided
in Figure 2. Careful examination of Figure 16 will reveal
the fact that the package parasitics (inductance and ca-
pacitance) are much lower for the MiniPak than they are
for leaded plastic packages such as the SOT-23, SOT-323
or others. This will permit the HMPP-389x family to be
used at higher frequencies than its conventional leaded
counterparts.
APLAC parameter can be obtained at http://www.
hp.woodshot.com/hprfhelp/design/SPICE/pins.
htm#HSMP389x website
20 fF
3
0.05 nH
4
3
30 fF
30 fF
30 fF
1.1 nH
0.05 nH
2
1
2
20 fF
0.5 nH 0.5 nH
0.5 nH
12 fF
0.5 nH
0.05 nH
4
30 fF
0.05 nH
1
20 fF
Single diode package (HMPP-3890)
20 fF
Anti-parallel diode package (HMPP-3892)
20 fF
0.05 nH
3
30 fF
0.05 nH
2
0.5 nH 0.5 nH
0.5 nH
12 fF
0.5 nH
0.05 nH
4
0.05nH
3
30 fF
0.05 nH
12
0.05nH
20 fF
Parallel diode package (HMPP-3895)
Figure 11a. Linear Equivalent Circuit of the MiniPak 1412 PIN Diode.
20fF
0.1nH
30fF
0.5nH
0.5nH
0.1nH
20fF
Diode package (HMPP-389T)
0.05nH
4
30fF
1
0.05nH