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參數(shù)資料
| 型號(hào)： | PMB2347 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 2800 MHz, PDSO20 |
| 封裝： | PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 32/35頁 |
| 文件大小： | 578K |
| 代理商： | PMB2347 |
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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
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 frequencies:
PLL1 (RF): 2.8 GHz
PLL2 (IF): 500 MHz
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
High phase noise performance
s
Switchable polarity and programmable phase detector currents
s
External reference current setting for PD outputs
s
Fast serial 3-wire bus interface with low threshold voltage Schmitt-Trigger
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 (quasidigital lock
detect) and test mode
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