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PE3240

2.2 GHz UltraCMOS™ Integer-N PLL for Low Phase Noise Applications

Peregrine Semiconductor 

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.

Product Specification

PE3240

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

Fin

Prescaler

Fin

10/11

Sdata

Primary

20-bit

Latch 20

Secon-

dary

20-bit

20

Latch 20

fr

Main

Counter

13

66

R Counter

Phase

Detector

PD_U

PD_D

Document No. 70-0034-02 │ www.psemi.com

©2006 Peregrine Semiconductor Corp. All rights reserved.

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