3238-21 datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Analog mixed-signal IC> The signal circuit> 3238-21

3238-21: DescriptionPhase Locked Loop, PQCC44, PLASTIC, LCC-44; CategoryAnalog mixed-signal IC The signal circuit; File Size274KB，15 Pages; ManufacturerpSemi (peregrine semiconductor); Websitehttp://www.psemi.com/

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3238-21 Overview

Phase Locked Loop, PQCC44, PLASTIC, LCC-44

3238-21 Parametric

Parameter Name	Attribute value
Parts packaging code	LCC
package instruction	PLASTIC, LCC-44
Contacts	44
Reach Compliance Code	compliant
Analog Integrated Circuits - Other Types	PHASE LOCKED LOOP
JESD-30 code	S-PQCC-J44
Number of terminals	44
Package body material	PLASTIC/EPOXY
Package shape	SQUARE
Package form	CHIP CARRIER
Certification status	Not Qualified
surface mount	YES
Terminal form	J BEND
Terminal location	QUAD
Base Number Matches	1

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Product Specification

PE3238

Product Description

Peregrine’s PE3238 is a high performance integer-N PLL

capable of frequency synthesis up to 1.5 GHz. The

superior phase noise performance of the PE3238 is ideal

for applications such as LMDS / MMDS / WLL basestations

and demanding terrestrial systems.

The PE3238 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 PE3238 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

1500 MHz UltraCMOS™ Integer-N PLL

for Low Phase Noise Applications

Features

•

1.5 GHz operation

•

÷10/11 dual modulus prescaler

•

Internal phase detector

•

Serial, parallel or hardwired

programmable

•

Low power ¾ 20 mA at 3 V

•

Q3236 PLL replacement

•

Ultra-low phase noise

Prescaler

10 / 11

Main

Counter

D(7:0)

Sdata

Pre_en

M(6:0)

A(3:0)

R(3:0)

Primary

20-bit

Latch

Secon-

dary

20-bit

Latch

Phase

Detector

PD_U

PD_D

R Counter

Document No. 70-0031-03

│

www.psemi.com

Page 1 of 15

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