Analogue, Mixed Signal, LSI


AFEs for femtocells and SDR

8 February 2012 Analogue, Mixed Signal, LSI

The AFE7225, Texas Instruments’ newest analog front end (AFE) for femtocell base stations and portable software-defined radio (SDR) applications, is a 12-bit device that integrates a dual 125 MSps ADC and dual 250 MSps DAC. In addition to the AFE7225, the 12-bit AFE7222 is available for lower-bandwidth, power-sensitive applications. It integrates a dual 65 MSps ADC and dual 130 MSps DAC and uses only 398 mW in full-duplex or 212 mW in half-duplex receive mode at full speed. Both devices integrate extensive digital signal processing capabilities and feature independent transmit and receive, 32-bit numerically controlled oscillators, serialised LVDS input/output options, and independent transmit/receive quadrature modulation correction for gain, phase and offset imbalances.



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