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National Semiconductor Unveils Industry’s First 14-bit, Dual, 105 MSPS ADC with Serial LVDS Outputs
Flagship Device Heads Family of New 12- and 14-bit ADCs from 65 MSPS to 105 MSPS with High IF Sampling Capability
September 26, 2006 – National Semiconductor Corporation (NYSE:NSM) today unveiled the industry’s first 14-bit, dual, 1 GHz-input bandwidth analog-to-digital converter (ADC) with serial low-voltage differential signaling (LVDS) outputs for demanding communications, test and measurement, and imaging applications.
At 105 mega-samples per second (MSPS), the ADC14DS105 heads a new family of high-bandwidth, 12- and 14-bit ADCs. Designed with National’s unique low-power pipeline architecture on its 0.18u CMOS process technology, the ADC family’s high bandwidth performance enables excellent noise and distortion performance for 240 MHz and higher intermediate frequencies (IF).
The ADC14DS105 provides a typical signal-to-noise ratio (SNR) of 72 dB and a spurious free dynamic range (SFDR) of 83 dB at a 240 MHz input frequency. This performance allows high intermediate-frequency (IF) sampling to eliminate an IF stage, relaxes filtering constraints and permits multi-carrier architectures. For third-generation (3G) communication receivers, designers can select 12-bit products to digitize one or two carriers, or 14-bit products to digitize three or four carriers requiring a higher dynamic range.
The ADC family, with sample rates from 65 MSPS to 105 MSPS, features parallel CMOS or serial low-voltage differential signaling (LVDS) output options. The LVDS outputs reduce system noise while decreasing the number of input/output (I/O) pins and traces, enabling easier signal routing and flexible system partitioning.
About the ADCs
National offers the dual ADCs in a lead-free, 60-pin LLP® (leadless leadframe) package and the single ADCs in a lead-free, 32-pin LLP package. These ADCs give engineers the ability to upgrade between sampling rates and resolutions, selecting from any of the interchangeable dual-channel products or interchangeable single-channel products.
Pricing and Availability
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. For more information about these products, please visit http://www.national.com/appinfo/adc/hs_adc.html.
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About LVDS
National Semiconductor's LVDS technology is a low-power, low-noise method for high-speed data transmission over copper interconnects. LVDS solves current and future high-performance data transmission challenges in bandwidth-hungry applications by delivering data at gigabits per second at milliwatts of power. National is the world’s largest supplier of high-speed LVDS products, according to Databean’s 2005 Analog IC Market Share survey. National's LVDS products include interface line drivers and receivers, LVDS-LVDS signal conditioners, LVDS-LVDS switching/multiplexing/repeating functions, LVDS serializer/deserializers, FPD link display solutions and ADCs with high-speed digital interfaces. For more information on National’s LVDS products, visit http://LVDS.national.com.
About National Semiconductor
National Semiconductor, the industry's premier analog company, creates high-value analog devices and subsystems. National's leading-edge products include power management circuits, display drivers, audio and operational amplifiers, interface products and data conversion solutions. National's key analog markets include wireless handsets, displays and a variety of broad electronics markets, including medical, automotive, industrial, and test and measurement applications. Headquartered in Santa Clara, Calif., National reported sales of $2.16 billion for fiscal 2006, which ended May 28, 2006. Additional company and product information is available at www.national.com.
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