PEREGRINE SEMICONDUCTOR CORP.  | http://www.peregrine-semi.com Copyright  Peregrine Semiconductor Corp. 2001


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Product Description





































Figure 1. Block Diagram




Product Specification

PE3239
2.2 GHz Integer-N PLL for Low
Phase Noise Applications

Features
• 2.2 GHz operation
• 10/11 prescaler
• Internal phase detector with
charge pump
• Serial programmable
• Low power  20 mA at 3 V
• Ultra-low phase noise
• Available in 20-lead TSSOP

Peregrine’s PE3239 is a high performance integer-N PLL
capable of frequency synthesis up to 2.2 GHz. The
superior phase noise performance of the PE3239 is ideal
for applications such as wireless local loop basestations,
LMDS systems and other demanding terrestrial systems.

The PE3239 features a 10/11 dual modulus prescaler,
counters, phase detector and a charge pump as shown
in Figure 1. Counter values are programmable through a
three wire serial interface.

Fabricated in Peregrine’s patented UTSi® (Ultra Thin
Silicon) CMOS technology, the PE3239 offers excellent
RF performance with the economy and integration of
conventional CMOS.
F
in
F
in
Prescaler
10/11
20
Main
Counter
20
Secon-
dary
20-bit
Latch
20
Primary
20-bit
Latch
R Counter
f
r
Phase
Detector
6
6
PD_U
PD_D
13
Sdata
Charge
Pump
CP