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PDF AD9357 Data sheet ( Hoja de datos )
| Número de pieza | AD9357 | |
| Descripción | WiMAX/BWA/LTE RF MxFE 2 x 2 MIMO Transceiver | |
| Fabricantes | Analog Devices | |
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FEATURES
RF transceiver with integrated 12-bit ADCs and DACs
Band: 3.3 GHz to 3.8 GHz
3.5 MHz < BW < 10 MHz
Superior receiver sensitivity with noise figure (NF) < 3 dB
Highly linear and spectrally pure transmitter
Tx EVM: −38 dB
SNR: >145 dB/Hz at frequency offset >70 MHz
Transmit (Tx) power control range of 58 dB,
resolution of 0.25 dB
Receive (Rx) gain control
Real-time monitor and control signals for manual gain
Autonomous automatic gain control (AGC)
Automatic frequency correction: <0.012 ppm
Integrated fractional-N synthesizer
Integrated phase noise: <0.58° rms
Multichip synchronization
Industry-standard JESD207 and ADI/Q digital interface
APPLICATIONS
WiMAX/BWA/LTE
Femtocell/picocell/microcell base stations
Fixed CPEs
GENERAL DESCRIPTION
The AD9357 is a radio frequency (RF) transceiver with high
performance dual receivers and transmitters, ideally suited for
WiMAX, BWA, and LTE base stations and fixed CPEs. The RF
MxFE® combines an RF front end with a mixed-signal baseband,
enabling an easy-to-use JESD207 or ADI/Q® digital interface to
the baseband processor (BBP), ASIC, or FPGA. The AD9357
operates in the 3.3 GHz to 3.8 GHz range, covering most licensed
and unlicensed bands, and supports channel bandwidths of 3.5 MHz,
4.375 MHz, 5 MHz, 7 MHz, 8.75 MHz, and 10 MHz.
The direct-conversion receivers have state-of-the-art noise figure
and linearity and require no external components with the exception
of baluns. The complete RF subsystem integrates autonomous AGC
loops, dc offset corrections, and quadrature calibrations, elimin-
ating the need for high speed interaction with the BBP.
Two high dynamic range ADCs, followed by decimation and
channel filters, digitize the received signals and produce 12-bit
output signals at a sample rate determined by the bandwidth
mode. The transmit path takes 12-bit input data and interpolates
before converting to the analog domain and upconverting to the
carrier frequency.
WiMAX/BWA/LTE RF MxFE
2 × 2 MIMO Transceiver
AD9357
FUNCTIONAL BLOCK DIAGRAM
AD9357
RX1P,
RX1N
TX1
POWER
DETECT
RX2P,RX2N
TX2
POWER
DETECT
TX2P,TX2N
2
2
2
ADC
ADC
DAC
DAC
FILTER
TXNRX
FILTER
12
D[11:0]
FILTER
DATA
INTERFACE
DATA_CLK
DATA_VALID
FB_CLK
2
TX1P,TX1N
GPO[3:0]
SPI_x
4
GPO
4
SPI
DAC
DAC
TEMP
LDOs
ADC
DAC
CTRL
84
DAC
FILTER
BBPLL,
RFPLL,
DATA_CLK,
SYNTH
ENAGC
REF_CLK
IN/OUT
XTALN
XTALP
CTRL_OUT CTRL_IN AUXADCx
[7:0]
[3:0]
INPUTS
AUXDACx
OUTPUTS
Figure 1.
A highly linear transmit path and excellent spectral purity result
in an error vector magnitude (EVM) of −38 dB, while the extremely
low sideband noise of −145 dBc/Hz at 70 MHz frequency offset
enables high-power picocell applications. An accurate power
detector with a range of more than 50 dB in 0.25 dB steps measures
the output power of each transmitter independently.
The reference frequency can be provided by an external reference
clock or by an internal digitally controlled crystal oscillator
(DCXO). The DCXO resolution is 0.012 ppm.
Using the built-in state machine to control the device, the AD9357
can be easily controlled in time division duplexing (TDD), half-
duplex frequency division duplexing (HFDD), or, if two devices
are used, frequency division duplexing (FDD) mode.
One three-input internal auxiliary ADC and two auxiliary DACs
are available for system monitoring and control. A user-defined
state machine can automatically sequence four GPOs. A single 3.3 V
supply powers the device with on-chip low dropout linear voltage
regulators (LDOs), providing all other required supplies. The
AD9357 package is a 10 mm × 10 mm, 144-ball CSP_BGA.
Rev. Sp0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2010 Analog Devices, Inc. All rights reserved.
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