PMB2347 Просмотр технического описания (PDF) - Infineon Technologies

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PMB2347

RF/IF Double PLL Frequency Synthesizer

Infineon Technologies 

PMB 2347

preliminary

Productinfo

Productinfo

General Description

The PMB 2347 is a RF/IF double PLL Package

frequency synthesizer implemented in

Infineon’ high speed BiCMOS technol-

ogy B6HFC. The device contains two

PLLs with integrated prescalers espe-

cially designed for use in battery pow-

ered radio equipment and mobile

telephones. Primary applications are

single- and dual-band digital cellular

systems e.g. GSM, PCN (DCS 1800)

and PCS systems.

Features

s Operation range 2.7 to 5.0 V

s Low operating current consumption

s Programmable power down modes

s High input sensitivity and high input s High phase noise performance

frequencies: PLL1 (RF): 2.8 GHz s Switchable polarity and program-

PLL2 (IF): 500 MHz

mable phase detector currents

s Programmable dual modulus

prescaler divide ratio:

PLL1: 1:64/65 or 1:32/33

PLL2: 16/17 or 1:8/9

Dividing ratios:

A counters: PLL1: 0 to 63

PLL2: 0 to 15

N counters: PLL1: 3 to 16,383

PLL2: 3 to 16,383

R counters 3 to 16,383 for PLL1

and PLL2

s Fast phase detectors and charge

pump outputs without dead zone

s External reference current setting

for PD outputs

s Fast serial 3-wire bus interface with

low threshold voltage Schmitt-Trig-

ger inputs for interfacing with low

voltage baseband circuits

s Two data registers in PLL2 for fast

IF band switching

s A programmable multi-functional

output port for lock detect (quasi-

digital lock detect) and test mode

Ordering Information

Type

PMB 2347

Ordering Code

Package

P-TSSOP-20

Wireless Components

Product Info

Specification, August 1999

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