Product Specification
PE3240
Product Description
Peregrine’s PE3240 is a high performance integer-N PLL
capable of frequency synthesis up to 2.2 GHz. The
superior phase noise performance of the PE3240 is ideal
for applications such as wireless local loop basestations,
LMDS systems and other demanding terrestrial systems.
The PE3240 features a 10/11 dual modulus prescaler,
counters and a phase comparator as shown in Figure 1.
Counter values are programmable through a three wire
serial interface.
The PE3240 is manufactured on Peregrine’s UltraCMOS™
process, a patented variation of silicon-on-insulator (SOI)
technology on a sapphire substrate, offering the
performance of GaAs with the economy and integration of
conventional CMOS.
2.2 GHz UltraCMOS™ Integer-N PLL
for Low Phase Noise Applications
Features
•
2.2 GHz operation
•
÷10/11 dual modulus prescaler
•
Internal phase detector
•
Serial programmable
•
Low power—15 mA at 3 V
•
Ultra-low phase noise
•
Available in 20-lead TSSOP
Figure 1. Block Diagram
F
in
F
in
Prescaler
10/11
Main
Counter
13
Sdata
Primary
20-bit
20
Latch
Secon-
dary
20-bit
Latch
20
20
Phase
Detector
PD_U
PD_D
6
f
r
6
R Counter
Document No. 70-0034-02
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www.psemi.com
©2006 Peregrine Semiconductor Corp. All rights reserved.
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