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National unveils 'first' 14bit, dual 105MSps ADC

Posted: 02 Oct 2006 ?? ?Print Version ?Bookmark and Share

Keywords:National? ADC14DS105? ADC? analog-to-digital converters? A/D converter?

National's ADC14DS105 ADC

National Semiconductor Corp. recently announced the ADC14DS105, said to be the industry's first 14bit, dual, 1GHz-input bandwidth ADC with serial LVDS outputs for demanding communications, test and measurement, and imaging applications.

At 105MSps, the ADC14DS105 heads a new family of 16 high-bandwidth, 12bit and 14bit ADCs. Designed with the company's low-power pipeline architecture on its 0.18? CMOS process technology, this ADC family's high-bandwidth performance enables efficient noise and distortion performance for 240MHz and higher intermediate frequencies (IF).

The new ADC provides a typical SNR of 72dB and SFDR of 83dB at a 240MHz input frequency. This performance allows high IF sampling to eliminate an IF stage, relaxes filtering constraints and permits multicarrier architectures. For 3G communication receivers, designers can select 12bit products to digitize one or two carriers, or 14bit products to digitize three or four carriers requiring a higher dynamic range.

The new ADC family, with sample rates from 65MSps to 105MSps, features parallel CMOS or serial LVDS output options. The LVDS outputs reduce system noise while decreasing the number of I/O pins and traces, the company said, enabling easier signal routing and flexible system partitioning. The dual ADCs in the new family are offered in a Pb-free, 60-pin leadless leadframe (LLP) package and the single ADCs in a Pb-free, 32-pin LLP package. These ADCs give engineers the ability to upgrade between sampling rates and resolutions, selecting from any of the eight interchangeable dual-channel products or eight interchangeable single-channel products.

Samples of selected ADCs are available for qualified customers through National's local sales offices, with production quantities scheduled for release throughout 2007. The dual ADC14DS105 is priced at $82.35 each and the single ADC14C105 is priced at $41 each in 1,000-unit quantities.

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Related Datasheets
Part Number Description Category
? ADC14DS105 Dual 14-Bit, 105 MSPS A/D Converter with Serial LVDS Outputs from the PowerWise? Family Cards and Modules



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