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IF transceiver boasts high integration for wireless backhaul applications

High integration is the primary benefit of the TRF2443, Texas Instruments' (TI) latest intermediate frequency (IF) transceiver, with cross-polarisation interference cancellation (XPIC) support. The device boasts an output third order intercept point (OIP3) of 29.5dBm and a receiver noise figure (NF) of 4.3dB to provide superior linearity and sensitivity, according to TI, making the transceiver well suited for wireless infrastructure backhaul and point-to-point microwave end equipment. enables designers to reduce solution cost by 40 percent, by, and space by 40 percent, as compared to discrete implementations.

The TRF2443 integrates some 15 functional blocks, realising a 40 percent board space and 30 percent power consumption saving over discrete implementations, it is claimed. The blocks include programmable baseband amplifiers, IF amplifiers, analog and digital variable gain amplifiers (VGAs), a quadrature modulator and demodulator, programmable baseband low pass filters, analog-to-digital converter buffers and an XPIC output amplifier and receiver. Notably, the combined analog and digital VGAs provide a gain range of 90db. The integrated Tx/Rx synthesisers eliminate the need for external local oscillator circuitry, thus simplifying the design.

With a transmit (Tx) OIP3 of 29.5dBm and receive (Rx) third order input intercept point (IIP3) of 9.5dBm, this part caters for more complicated modulation schemes and increased data throughput. It is a trend catered to by other parts in TI's high-performance RF product line, such as the TRF3703 quadrature modulator, TRF3710 quadrature demodulator and TRF3761 RF synthesisers.

The TRF2443 is available in a 14 mm x 14 mm QFP package, and more information can be found here.

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