Product Specification
PE3236
Product Description
Peregrine’s PE3236 is a high performance integer-N PLL
capable of frequency synthesis up to 2.2 GHz. The
superior phase noise performance of the PE3236 is ideal
for applications such as LMDS / MMDS / WLL basestations
and demanding terrestrial systems.
The PE3236 features a 10/11 dual modulus prescaler,
counters and a phase comparator as shown in Figure 1.
Counter values are programmable through either a serial or
parallel interface and can also be directly hard wired. This
programming flexibility, combined with the dual latch
architecture enabling ping-pong loading of the main divide
counter, makes these PLLs well suited as the core for
fractional-N or sigma-delta implementation.
The PE3236 is optimized for terrestrial applications. It 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.
Figure 1. Block Diagram
2200 MHz UltraCMOS™ Integer-N PLL
for Low Phase Noise Applications
Features
•
2.2 GHz operation
•
÷10/11 dual modulus prescaler
•
Internal phase detector
•
Serial, parallel or hardwired
programmable
•
Low power— 22 mA at 3 V
•
Q3236 PLL replacement
•
Ultra-low phase noise
•
Available in 44-lead PLCC package
F
in
F
in
Prescaler
10 / 11
Main
Counter
13
f
p
D(7:0)
8
Sdata
Pre_en
M(6:0)
A(3:0)
R(3:0)
f
r
Primary
20-bit
20
Latch
Secon-
dary
20-bit
Latch
20
20
20
16
Phase
Detector
PD_U
PD_D
6
6
f
c
R Counter
Document No. 70-0026-03
│
www.psemi.com
©2003-2005 Peregrine Semiconductor Corp. All rights reserved.
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