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TRF2443

更新时间： 2024-11-25 05:55:27
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德州仪器 - TI 无线
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72页 1581K
描述
Integrated IF Transceiver for Broadband Wireless Applications

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TRF2443  
www.ti.com ................................................................................................................................... SLWS217A–SEPTEMBER 2009–REVISED SEPTEMBER 2009  
Integrated IF Transceiver for Broadband Wireless Applications  
1
FEATURES  
DESCRIPTION  
•
Integrated TX Chain (165–175 MHz / 330–350  
MHz)  
The TRF2443 is a highly integrated full-duplex  
intermediate frequency (IF) transceiver designed for  
broadband point-to-point wireless communications  
–
–
–
–
–
Baseband Amplifiers  
Quadrature Modulator  
applications. The receiver chain integrates  
a
Digitally Controlled VGA  
TX Output IP3: 29.5 dBm  
TX Output Noise: –166 dBc/Hz  
quadrature (IQ) demodulator and provides more than  
90 dB of gain range, obtained via a combination of  
analog- and digital-controlled VGAs. The integrated  
programmable baseband low-pass filter gives the  
TRF2443 the flexibility to receive signals with different  
bandwidths, while also helping to remove interferer  
signals before they reach the ADC. Additionally, the  
TRF2443 gives the flexibility to add an external IF  
filter to further remove unwanted signals. The  
TRF2443 transmitter chain integrates a quadrature  
(IQ) modulator driving a highly linear IF DVGA that  
provides 35 dB of gain range controlled via a serial  
programming interface (SPI). The TRF2443 includes  
the two synthesizers for the receiver and transmitter  
chains, removing the need for external LO generation  
circuitry and simplifying the implementation of a  
frequency-division duplexing (FDD) transceiver  
•
Integrated RX Chain (140–165 MHz / 280–330  
MHz)  
–
–
–
–
–
–
–
–
IF Amplifiers  
Analog and Digital VGA  
Quadrature Demodulator  
Baseband Filters  
ADC Buffers  
IF SAW Filter Bypass  
RX Noise Figure: 4.3 dB  
RX Input IP3: 9.5 dBm  
•
•
Integrated TX and RX Synthesizers  
design.  
The  
TRF2443  
also  
provides  
Integrated Cross-Polarization Interference  
Cancellation (XPIC) Support  
cross-polarization interference cancellation (XPIC)  
support via an integrated XPIC output amplifier and  
receiver chain. The TRF2443 is an ideal building  
block for implementing the IF transceiver function in  
the indoor unit (IDU), which is connected via a coaxial  
cable interface to the outdoor unit (ODU), of a  
point-to-point microwave backhaul split-architecture  
system.  
•
Auxiliary RX Chain  
APPLICATIONS  
•
•
•
•
Wireless Microwave Backhaul  
Point-to-Point Microwave  
Broadband Wireless Applications  
WiMAX IF Transceiver  
IF SAW  
XPIC  
AGC  
XPIC  
OUT  
IF_OUT  
IF_IN  
RXAGC  
XPIC_IN  
XPIC_BBI  
0/90  
AGC  
CNTL  
XPIC_BBQ  
RXBBI  
from RXPLL  
IFAMP  
RX_IN  
0/90  
RXBBQ  
RX VGA  
Temperature  
Sensor  
TEMPOUT  
VCCs  
CLKSPI  
DATASPI  
LESPI  
S
P
I
RXPLL  
3
From SPI  
7
TXI_IN  
TX VGA  
TX_OUT  
GNDs  
TXPLL  
0/90  
TXQ_IN  
Level  
Detect  
TX_PWD  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2009, Texas Instruments Incorporated  
1234567...72

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