Analog Devices AD9371XBCZ

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signal processing functions. The IC delivers a versatile combination of high performance and low power consumption required by 3G/4G micro and macro base

The AD9371 is a highly integrated, wideband RF transceiver offering dual channel transmitters and receivers, integrated synthesizers, and digital signal processing functions. The IC delivers a versatile combination of high performance and low power consumption required by 3G/4G micro and macro base station equipment in both FDD and TDD applications. The AD9371 operates from 300 MHz to 6000 MHz, covering most of the licensed and unlicensed cellular bands. The IC supports receiver bandwidths up to 100 MHz. It also supports observation receiver and transmit synthesis bandwidths up to 250 MHz to accommodate digital correction algorithms. The transceiver consists of wideband direct conversion signal paths with state-of-the-art noise figure and linearity. Each complete receiver and transmitter subsystem includes dc offset correction, quadrature error correction, and programmable digital filters, eliminating the need for these functions in the digital baseband. Several auxiliary functions such as an auxiliary analog-to-digital converter (ADC), auxiliary digital-to-analog converters (DACs), and general-purpose input/outputs (GPIOs) are integrated to provide additional monitoring and control capability. An observation receiver channel with two inputs is included to monitor each transmitter output and implement interference mitigation and calibration applications. This channel also connects to three sniffer receiver inputs that can monitor radio activity in different bands. The high speed JESD204B interface supports lane rates up to 6144 Mbps. Four lanes are dedicated to the transmitters and four lanes are dedicated to the receiver and observation receiver channels. The fully integrated phase-locked loops (PLLs) provide high performance, low power fractional-N frequency synthesis for the transmitter, the receiver, the observation receiver, and the clock sections. Careful design and layout techniques provide the isolation demanded in high performance base station applications. All voltage controlled oscillator (VCO) and loop filter components are integrated to minimize the external component count. A 1.3 V supply is required to power the core of the AD9371, and a standard 4-wire serial port controls it. Other voltage supplies provide proper digital interface levels and optimize transmitter and auxiliary converter performance. The AD9371 is packaged in a 12 mm × 12 mm, 196-ball chip scale ball grid array (CSP_BGA). Product Highlights: Direct Conversion signal paths with state of the art noise figure and linearity enable high performance, low power wideband radio systems On-chip DC offset correction, wideband quadrature error correction and programmable digital filters eliminate the need for these functions in the digital baseband Fully integrated phase locked loops including VCO and loop filter components minimize external component count and reduce system size Several auxiliary ADCs, DACs and GPIOs for signal monitoring and control Best-in-class power consumption for transceiver with this performance and functionality Small package size with 12mmx12mm footprint High speed JESD204B interface --> Applications 3G/4G micro and macro base stations (BTS) 3G/4G multicarrier picocells FDD and TDD active antenna systems Microwave nonline-of-sight (NLOS) backhaul systems