PE4268
Product Specification
Evaluation Kit
The SP6T Evaluation Kit board was designed to
ease customer evaluation of the PE4268 RF switch.
The PE4268 has two high power TX ports and four
high isolation RX ports. The TX ports are symmetric
and are designed as paths for the 850, 900, 1800, or
1900 MHz bands. The RX ports are also symmetric
and can be assigned to any of these frequency
bands.
The ANT port connects through a 50
Ω
transmission
line to the top SMA connector, J1. The RX and TX
ports connect through 50
Ω
transmission lines to
SMA connectors J2 – J7. A through 50
Ω
transmission line between SMA connectors J9 and
J10 allows estimation of the PCB losses over
environmental conditions. An open transmission line
connected to J11 is also provided.
J8 supplies DC power to the pin marked V
DD
and the
bottom row of pins, which is GND. 1 MΩ pull-up
resistors are connected from V
DD
to each of the three
control logic inputs: V1, V2, and V3. These pull-up
resistors are provided for ease of evaluation on this
board and are not required for the PE4268 to
operate.
Adding a jumper between a control pin and the
adjacent GND pin on the bottom row of J8 will set a
logic-0 on that control pin. Removing the jumper will
set a logic-1. To evaluate the PE4268, add or
remove jumpers according to the truth table in
Table 5.
Figure 4. Evaluation Board Layout
Peregrine Specification 101/0205
ANT
RX1
TX1
TX2
RX2
RX3
RX4
Through-Line
Open Line
Figure 5. Evaluation Board Schematic
Peregrine Specification 102/0267
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 4 of 11
Document No. 70-0165-03
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UltraCMOS™ RFIC Solutions
PEREGRINE [ PEREGRINE SEMICONDUCTOR CORP. ]
