Adrv9001 In Single-Band 2T2R Tdd Type Small-Cell Application - Analog Devices ADRV9001 User Manual

UG-1828

ADRV9001 IN SINGLE-BAND 2T2R TDD TYPE SMALL-CELL APPLICATION

ANTENNA A
RF SWITCH
COUPLER
ATTENUATOR
ANTENNA B
RF SWITCH
ATTENUATOR
RF I/O FUNCTIONALITY
Rx1A RF RECEPTION (DIVERSITY/MIMO)
Rx1B USED BY Tx1 INIT CALIBRATIONS
Rx2A RF RECEPTION (DIVERSITY/MIMO)
Rx2B USED BY Tx2 INIT CALIBRATIONS
Tx1 RF TRANSMISSION (DIVERSITY/MIMO)
Tx2 RF TRANSMISSION (DIVERSITY/MIMO)
Single-Band 2T2R TDD Overview
ADRV9001 transceiver with minimum number of external components can be utilized to build complete RF-to-bits signal chain that can
serve as RF front end in TDD type small cell type applications. ADRV9001 dual Rx and Tx signal chains enables user to implement
MIMO or diversity in their system. In TDD type applications internal DPD block can be utilized to linearize external power amplifier
and improve overall system efficiency. ADRV9001 internal AGC can be utilized to autonomously monitor and set appropriate gain level
for Rx signal chains. For time critical TDD type applications control of the ADRV9001 TRx can be done by toggling control lines.
ADRV9001 can control external Rx/Tx switch using its analog GPIOs as well as provide power amplifier bias voltage by utilizing
AuxDAC outputs.
PA
LPF
LNA BPF FILTER
BPF FILTER
LNA
PA
LPF
COUPLER
Figure 5. Single-Band 2T2R FDD Type Small-Cell Application
VGA
BALUN Tx1
BALUN
Rx1A
BALUN
Rx1B
BALUN
EXT LO1
/2
RF PLL1
BALUN EXT LO2
/2
RF PLL2
BALUN
Rx2A
BALUN
Rx2B
VGA
BALUN Tx2
AGPIOs
Rev. PrA | Page 14 of 253
Preliminary Technical Data
POWER IC
ADRV9002
Tx1
DATA
3/4/6/7/8/10
INT
DAC QEC SSI
LOL
DPD
Rx1
DDC DATA
3/6/8
DEC
SSI
ADC
QEC
DC
12/16
DGPIOs
4
Rx/Tx_ENABLE
GP_INT
3/4
SPI
RESET
Rx2
DDC DATA
3/6/8
DEC
SSI
ADC
QEC
DC
Tx2
INT
DATA
3/4/6/7/8/10
QEC
LOL
SSI
DAC
DPD
DEV_CLKL_OUT
MCS
BALUN
DEV_CLK
AuxADC AuxDAC
FPGA
OR
BBIC
VCXO