器件名称: W3020
功能描述: GSM Multiband RF Transceiver
文件大小: 409.26KB 共44页
简 介:Advance Data Sheet December 1999
W3020 GSM Multiband RF Transceiver
Features
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Applications
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2.7 V operation, low power consumption Integrated receive, transmit, and synthesizer functions IF frequency and transmit offset frequency generated from the same LO Integrated dual LNAs and mixers Minimizes PCB design work between systems Surface-mount, 64-pin TQFPT package
GSM1800/1900
GSM dual-band hand portables: — GSM900/1800 — GSM900/1900 GSM single-band hand portables: — GSM900 — GSM1800 — GSM1900
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ADC IF 270 MHz
RX I
Φ
GSM900 SAW VCO 900: 1150 MHz—1230 MHz 1800: 1530 MHz—1610 MHz 1900: 1660 MHz—1730 MHz
÷2
ADC
RX Q
900: 925 MHz—960 MHz 1800: 1805 MHz—1880 MHz 1900: 1930 MHz—1990 MHz
RF MODE & AGC CONTROL LO2 PLL
540 MHz VCO
W3000 FREQUENCY SYNTHESIZER
900: 880 MHz—915 MHz 1800: 1710 MHz—1785 MHz 1900: 1850 MHz—1910 MHz GSM1800/1900
TX IF 1800/1900: 180 MHz DAC TX I
Σ
PA GSM900 Note: shaded area is off-chip. 900: 270 MHz
Φ
÷2 ÷3
SWITCHED DIVIDER
DAC
TX Q
Figure 1. W3020 Circuit Block Diagram
W3020 GSM Multiband RF Transceiver
Advance Data Sheet December 1999
Table of Contents
Contents Page Contents Page
Features................................................................. 1 Applications ........................................................... 1 Description............................................................. 4 Detailed Block Diagram ...................................... 5 Pin Information..................................……
