AD9361BBCZ-REEL Datasheet, PDF (1/36 Pages) Analog Devices – RF Agile Transceiver

Data Sheet
FEATURES
RF 2 × 2 transceiver with integrated 12-bit DACs and ADCs
Band: 70 MHz to 6.0 GHz
Supports TDD and FDD operation
Tunable channel bandwidth: <200 kHz to 56 MHz
Dual receivers: 6 differential or 12 single-ended inputs
Superior receiver sensitivity with a noise figure of 2 dB at
800 MHz local oscillator (LO)
RX gain control
Real-time monitor and control signals for manual gain
Independent automatic gain control
Dual transmitters: 4 differential outputs
Highly linear broadband transmitter
TX EVM: ≤−40 dB
TX noise: ≤−157 dBm/Hz noise floor
TX monitor: ≥66 dB dynamic range with 1 dB accuracy
Integrated fractional-N synthesizers
2.4 Hz maximum LO step size
Multichip synchronization
CMOS/LVDS digital interface
APPLICATIONS
Point to point communication systems
Femtocell/picocell/microcell base stations
General-purpose radio systems
GENERAL DESCRIPTION
The AD9361 is a high performance, highly integrated radio
frequency (RF) Agile Transceiver™ designed for use in 3G and 4G
base station applications. Its programmability and wideband
capability make it ideal for a broad range of transceiver applications.
The device combines a RF front end with a flexible mixed-signal
baseband section and integrated frequency synthesizers,
simplifying design-in by providing a configurable digital interface
to a processor. The AD9361 operates in the 70 MHz to 6.0 GHz
range, covering most licensed and unlicensed bands. Channel
bandwidths from less than 200 kHz to 56 MHz are supported.
The two independent direct conversion receivers have state-of-the-
art noise figure and linearity. Each receive (RX) subsystem includes
independent automatic gain control (AGC), dc offset correction,
quadrature correction, and digital filtering, thereby eliminating
the need for these functions in the digital baseband. The AD9361
also has flexible manual gain modes that can be externally
controlled. Two high dynamic range ADCs per channel digitize
the received I and Q signals and pass them through configurable
decimation filters and 128-tap finite impulse response (FIR) filters
to produce a 12-bit output signal at the appropriate sample rate.
Rev. D
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RF Agile Transceiver
AD9361
FUNCTIONAL BLOCK DIAGRAM
RX1B_P,
RX1B_N
RX1A_P,
RX1A_N
RX1C_P,
RX1C_N
RX2B_P,
RX2B_N
RX2A_P,
RX2A_N
RX2C_P,
RX2C_N
AD9361
ADC
RX LO
ADC
P0_[D11:D0]/
TX_[D5:D0]
TX_MON1
TX1A_P,
TX1A_N
TX1B_P,
TX1B_N
TX LO
DAC
P1_[D11:D0]/
RX_[D5:D0]
TX_MON2
TX2A_P,
TX2A_N
TX2B_P,
TX2B_N
DAC
GPO
RADIO
SWITCHING
SPI
CTRL
CTRL
PLLs
CLK_OUT
AUXADC AUXDACx XTALP XTALN
NOTES
1. SPI, CTRL, P0_[D11:D0]/TX_[D5:D0], P1_[D11:D0]/RX_[D5:D0],
AND RADIO SWITCHING CONTAIN MULTIPLE PINS.
Figure 1.
The transmitters use a direct conversion architecture that
achieves high modulation accuracy with ultralow noise. This
transmitter design produces a best in class TX EVM of <−40 dB,
allowing significant system margin for the external PA selection.
The on-board transmit (TX) power monitor can be used as a
power detector, enabling highly accurate TX power measurements.
The fully integrated phase-locked loops (PLLs) provide low
power fractional-N frequency synthesis for all receive and
transmit channels. Channel isolation, demanded by frequency
division duplex (FDD) systems, is integrated into the design.
All VCO and loop filter components are integrated.
The core of the AD9361 can be powered directly from a 1.3 V
regulator. The IC is controlled via a standard 4-wire serial port
and four real-time I/O control pins. Comprehensive power-down
modes are included to minimize power consumption during
normal use. The AD9361 is packaged in a 10 mm × 10 mm,
144-ball chip scale package ball grid array (CSP_BGA).
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