參數(shù)資料
型號(hào)： PMB2347
廠商： INFINEON TECHNOLOGIES AG
英文描述： RF/IF Double PLL Frequency Synthesizer
中文描述： 射頻/中頻雙鎖相環(huán)頻率合成器
文件頁(yè)數(shù)： 6/35頁(yè)
文件大?。?/td> 578K
代理商： PMB2347
Product Description
2 - 2
PMB 2347
preliminary
Wireless Components
Specification, August 1999
2.1
Overview
The PMB 2347 is a RF/IF double PLL frequency synthesizer implemented in
Infineon’ 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 sys-
tems.
2.2
Features
I
Operation range 2.7 to 5.0 V
I
Low operating current consumption
I
Programmable power down modes
I
High input sensitivity and high input frequencies:
PLL1 (RF): 2.8 GHz
PLL2 (IF): 500 MHz
I
Programmable dual modulus prescaler divide ratio:
PLL1: 1:64/65 or 1:32/33
Dividing ratios:
A counters: PLL1: 0 to 63
N counters: PLL1: 3 to 16,383
R counters 3 to 16,383 for PLL1 and PLL2
PLL2: 16/17 or 1:8/9
PLL2: 0 to 15
PLL2: 3 to 16,383
I
Fast phase detectors and charge pump outputs without dead zone
I
High phase noise performance
I
Switchable polarity and programmable phase detector currents
I
External reference current setting for PD outputs
I
Fast serial 3-wire bus interface with low threshold voltage Schmitt-Trigger
inputs for interfacing with low voltage baseband circuits
I
Two data registers in PLL2 for fast IF band switching
I
A programmable multi-functional output port for lock detect (quasidigital lock
detect) and test mode
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