AD9361BBCZ

IC RF TXRX CELLULAR 144LFBGA

FEATURES

RF 2 × 2 transceiver with integrated 12-bit DACs and ADCs

TX band: 47 MHz to 6.0 GHz

RX band: 70 MHz to 6.0 GHz

Supports TDD and FDD operation

Tunable channel bandwidth:

Dual receivers: 6 differential or 12 single-ended inputs

Superior receiver sensitivity with a noise figure of 2 dB at 800 MHz LORX 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 local oscillator (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 receiver LO operates from 70 MHz to 6.0 GHz and the transmitter LO operates from 47 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 analog-to-digital converters (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.

The transmitters use a direct conversion architecture that achieves high modulation accuracy with ultralow noise. This transmitter design produces a best in class TX error vector magnitude (EVM) of <−40 dB, allowing significant system margin for the external power amplifier (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 input/output 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).