ADCs target 4G
The dual channel AD9648 consumes 102mW/channel at 125MSPS (mega samples per second) and features SFDR (spurious-free dynamic range) performance of 91 dBc at 70 MHz.
With IF sampling frequencies up to 200MHz it may appeal to designers looking for a dual high-speed A/D converter to build multimode digital receivers.
The AD9648 is pin compatible with many of ADI’s 16-, 14-, 12- and 10-bit A/D converters, enabling migration between 10-bit and 16-bit converters sampling from 20MSPS to 125MSPS.
The single channel AD9642 is housed in a 5mm x 5mm package size, which is claimed to be 30 percent smaller than competing products, and offers IF sampling frequencies up to 350MHz supporting wide bandwidths up to 125MHz. It features an SNR (signal-to-noise ratio) of 72.2 dBFS and SFDR of 90 dBc at base band, while consuming 360mW at 250MSPS.
The AD9648 and AD9642 A/D converters feature multi-stage, differential pipelined architectures with integrated output-error-correction logic. The AD9648 is available in a 64-lead RoHS-compliant LFCSP, while the AD9642 ships in a 32-lead RoHS-compliant LFCSP package.
Both are specified over the industrial temperature range of -40°C to +85°C. The AD9648 has two external 14-bit outputs that can be set to 1.8-V CMOS or LVDS. The AD9642 converter’s proprietary differential input maintains excellent SFDR performance for input frequencies up to 350MHz.
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