Product Specification

PE3511

Page 6 of 9

©2003-2008 Peregrine Semiconductor Corp. All rights reserved.

Document No. 70-0106-06

│ UltraCMOS™ RFIC Solutions

Evaluation Kit

Figure 9. Evaluation Board Layouts

Figure 10. Evaluation Board Schematic

Peregrine Specification 102/0189

Peregrine Specification 101/0110

Applications Support

If you have a problem with your evaluation kit or if

you have applications questions call (858) 731-9400

and ask for applications support. You may also con-

tact us by fax or e-mail:

Fax: (858) 731-9499

E-Mail: help@psemi.com

Evaluation Kit Operation

The SC-70 Prescaler Evaluation Board was

designed to help customers evaluate the

PE3511

divide-by-2 prescaler. On this board, the device

input (pin 3) is connected to connector J1 through a

50

Ω transmission line. A series capacitor (C1)

provides the necessary DC block for the device

input. A value of 100 pF was used for this board

layout; other applications may require a different

value.

The device output (pin 6) is connected to J3 through

a 50

Ω transmission line. A series capacitor (C5)

provides the necessary DC block for the device

output. This capacitor value must be chosen to have

a low impedance at the desired output frequency of

the device. A value of 100 pF was chosen for the

evaluation board. At both input and output, select a

capacitor value that offers low series reactance while

ensuring that any parasitic resonances are well

above the operating bandwidth.

The board is constructed of a two-layer FR4 material

with a total thickness of 0.031”. The bottom layer

provides ground for the RF transmission lines. The

transmission lines were designed using a coplanar

waveguide above ground plane model with trace

width of 0.030”, trace gaps of 0.007”, dielectric

thickness of 0.028”, metal thickness of 0.0014”, and

ε

transmission lines is coplanar waveguide. Liberal

numbers of plated through holes unite

the top and

bottom ground areas for best performance.

J6 provides DC power to the device via pin 4. Two

decoupling capacitors (100 pF, 1000 pF) are

included on this trace. It is the customer’s

responsibility to determine proper supply decoupling

for their design application.