ADI AD9874ABSTRL

Подсистема оцифровки ПЧ10 МГц ~ 300 МГцСотовая связь, APC025, EDGE, GSM, TETRA, UHF

Overview

The high dynamic range and inherent anti-aliasing provided by the bandpass sigma delta converter allows the AD9874ABSTRL to cope with blocking signals 95 dB stronger than the desired signal. Auxiliary blocks include clock and LO synthesizers in addition to a serial peripheral interface port.

The SPI port programs numerous parameters of the AD9874,thus allowing the device to be optimized for any given application.Programmable parameters include synthesizer divide ratios, AGCattenuation and attack/decay time, received signal strength level,decimation factor, output data format, 16 dB attenuator, and theselected bias currents. The bias currents of the LNA and mixercan be further reduced at the expense of degraded performancefor battery-powered applications.

Features

Applications

• PA linearization
• PA predistortion
• Amplitude modulation
• Phase modulation
• Variable matched attenuator
• Phase shifter
• Cellular base stations
• Radio links
• Fixed wireless access
• Broadband/CATV