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Analog Devices (ADI) has introduced the ADF4602-1 transceiver for 3G femtocell base stations that support the UMTS (universal mobile telecommunications system) wireless interface standard.

The ADF4602-1 is an integrated direct conversion transceiver that incorporates frequency synthesisers, filters and power management circuitry and can be coupled with ADI’s AD9863 mixed-signal front-end and ADL532x and ADL554x driver amplifier ranges to create a UMTS radio.

ADI claims the design consumes 30 per cent less power and delivers 50 per cent better EVM (error vector magnitude) than competing devices.

It also improves data rates and system fidelity in multi-band 3G femtocell base stations.

The ADF4602-1 3G is suited to high-performance 3G femtocells providing cellular FMC (fixed mobile converged) services.

The front end has a receive sensitivity of better than – 113 dBm and includes three high-performance single-ended LNAs (low-noise amplifiers), which allows the device to support tri-band applications.

The receiver is based on a direct conversion architecture, which is suitable for integrated W-CDMA (wideband code division multiple access) receivers and reduces the BOM (bill of materials) by integrating all interstage filtering.

The single-ended input structure eases interface design constraints and reduces the matching components needed for small footprint single-ended duplexers.

The transmitter uses a direct conversion modulator that achieves high modulation accuracy with exceptionally low noise, eliminating the need for external transmit Saw (surface acoustic wave) filters.

The ADF4602-1 transceiver operates on a 3.3V supply and typically consumes 50 mA in receive mode and 50 mA to 100 mA in transmit mode.

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