©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 11
Document No. 70-0165-03 │ www.psemi.com
RX1
RX2
RX3
RX4
TX1
TX2
CMOS
Control/Driver
and ESD
V1 V2 V3
Figure 2. Package Type
20-lead 4x4 mm QFN
The PE4268 SP6T RF UltraCMOS™ Switch addresses the
specific design needs of the Quad-Band GSM Handset
Antenna Switch Module Market. Broadband performance also
makes it a versatile solution in other IF and RF applications.
The switch includes two high power paths with low insertion
loss and four low power paths with high isolation. On-chip
CMOS decode logic facilitates three-pin low voltage CMOS
control. High ESD tolerance of 1500 V at all ports and no
blocking capacitor requirements make this the ultimate in
integration and ruggedness.

The PE4268 UltraCMOS™ RF Switch is manufactured in
Peregrine’s patented Ultra Thin Silicon (UTSi®) CMOS
process, offering the performance of GaAs with the economy
and integration of conventional CMOS.
Product Specification
SP6T UltraCMOS™ 2.6 V Switch
100 – 3000 MHz Product Description
Figure 1. Functional Diagram
PE4268
Features
• Three pin CMOS logic control with
integral decoder/driver
• Low TX insertion loss: 0.55 dB at 900
MHz, 0.7 dB at 1900 MHz
• TX – RX Isolation of 48 dB at 900 MHz,
40 dB at 1900 MHz
• Low harmonics: 2f
o
= -84 dBc and
3f
o
= -70 dBc at +35 dBm input power
• 1500 V HBM ESD tolerance
• RX SAW over voltage protection circuit
• Harmonics immune to RX VSWR
• No blocking capacitors required
• 20-lead 4x4 mm QFN package