Analog Devices Inc. has introduced a high-performance analog-to-digital (ADC) converter expected to enable the design of programmable digital radio receivers, commonly known as software radios.
The AD6644 is a 14-bit, 65-megasample/second ADC that can convert wide-band analog signals of 200-MHz input bandwidth with low noise and distortion, said Scott Behrhorst, marketing and applications manager for ADI's Infrastructure Product Line, Norwood, Mass.
The ADC will help enable an improved receiver architecture that will deliver enhanced voice and data services over cellular and PCS bands, he said.
"One huge challenge for cellular and PCS operators today is staying ahead of consumer demand for more capacity and added features like email, video, and other data-intensive services," Behrhorst said. "The DSP-intensive radios needed to deliver these services will require high-speed, high-resolution ADCs with wide bandwidth, high dynamic range, and low noise."
Functions such as filtering will be able to be performed digitally using the A6644, eliminating the need for additional filters that require adjustment during the system manufacturing process, he said.
The AD6644 is packaged in a 52-pin LQFP and is $39 each in quantities of 1,000.