W3020 Datasheet, PDF (1/44 Pages) Agere Systems – GSM Multiband RF Transceiver

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