Direct RF-sampling ADCs enhance radio architectures

NATIONAL SEMICONDUCTOR ADC12Dxx00RF family of analog-to-digital converters (ADCs) directly sample RF signals beyond 2.7 GHz, with third-order intermodulation distortion (IMD3) up to -71 dBc and sampling at up to 3.6 Giga-samples per second (GSPS). Product family includes five 12-bit ADCs that enable system designers to eliminate multiple intermediate frequency (IF) down-conversion stages including amplifiers, mixers and filters. A single device replaces entire radio signal path subsystems, drastically reducing bill of materials (BOM) cost, board size and weight in 3G/4G wireless basestations.

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