PMB2349 Просмотр технического описания (PDF) - Infineon Technologies

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PMB2349

Wireless Components Optimized RF/IF Dual PLL Frequency Synthesizer

Infineon Technologies 

Confidential

PMB 2349

preliminary

Product Description

2.1 Overview

The PMB 2349 is a RF/IF Dual-PLL frequency synthesizer implemented in Infi-

neon’s high speed BiCMOS technology B6HFC. The device contains two PLLs

with integrated prescalers especially designed for use in battery powered radio

equipment and mobile telephones. Primary applications are single- and dual-

band digital cellular systems e.g. GSM, PCN (DCS 1800) and PCS systems.

2.2 Features

Operation range 2.7 to 5.0 V

Ultra low phase noise

Ultra low spurious

Faster lock-in times

New bipolar power modes

New programmable Reference Amplifier

External or internal reference current setting for PD outputs

Low operating current consumption

Programmable power down modes

High input sensitivity and high input frequencies:

PLL1 (RF): 2.8 GHz, PLL2 (IF): 600 MHz

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

Fast phase detectors and charge pump outputs without dead zone

Switchable polarity and programmable phase detector currents

Fast serial 3-wire bus interface with low threshold voltage Schmitt-Trigger

inputs for interfacing with low voltage baseband circuits

Two data registers in PLL2 for fast IF band switching

A programmable output port for lock detect or general porpose (VCO switch

etc.).

Wireless Components

2-2

Specification, May 2000

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