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National Semiconductor Introduces Industry’s Lowest-Power, Radiation-Tolerant, 8-bit, 1 GSPS ADC for Satellite Applications

National Semiconductor Introduces Industry’s Lowest-Power, Radiation-Tolerant, 8-bit, 1 GSPS ADC for Satellite Applications ADC08D1000WG-QV Provides Single Event Latch-Up Levels of 120 MeV and 300K rad for Total Ionizing Dose

Jan 29, 2007

January 29, 2007 -- National Semiconductor Corporation (NYSE:NSM) today announced the industry’s lowest-power, 8-bit, 1 giga-samples per second (GSPS) dual CMOS analog-to-digital converter (ADC) qualified for use in broadband and high-speed communications satellite applications. Packaged in a 128-lead multi-layered ceramic quad flat package, the ADC08D1000WG-QV, at 800 mW per channel, consumes significantly less power than competitive products, while providing the gigahertz speed and greater effective number of bits (ENOB) necessary for reliable measurement of high-frequency signals. 

The ADC08D1000WG-QV meets the industry’s stringent space-grade specifications, including radiation levels of 120 MeV for single event latch-up (SEL) and 300K rad (Si) for total ionizing dose. As one of the key signal-path building blocks in communication satellite systems, this ADC delivers superior signal-to-noise and distortion performance at the lowest power in the industry to accurately capture real-world analog transmissions and convert them for processing in the digital domain.

The ADC08D1000WG-QV digitizes two input signals to 8-bit resolution at sampling rates up to 1.2 GSPS, while consuming just 800 mW per channel from a 1.9V nominal supply. By using an innovative fully programmable dual-edge sampling feature, the product can achieve 2 GSPS sampling from one channel by interleaving the two on-chip converters. Each ADC has a 1:2 demultiplexer that feeds two low-voltage differential signaling (LVDS) buses, which reduces the output data rate on each bus to half the sampling rate. 

Unique High-Performance Architecture
National’s ADC08D1000WG-QV has a unique, performance-enhancing flash-folding/interpolating architecture. Folding reduces the number of comparators, and interpolation greatly reduces the number of front-end amplifiers, which provides a significant power savings and reduces the load on the input signal.

Key Technical Specifications
At a 1 GHz sampling rate, the ADC08D1000WG-QV achieves 0.15 least significant bits (LSB) differential non-linearity (DNL), while maintaining a high 7.4 ENOB at an input frequency of 498 MHz (Nyquist). The converter is designed with an extremely low bit-error rate (BER) of 10-18 and typically consumes less than 3.5 mW in the power-down mode. The ADC08D1000WG-QV guarantees “no missing codes” over the extended operating temperature range of -55 degrees C to 125 degrees C. The ADC08D1000WG-QV has an on-command calibration mode to prevent single event effects (SEE) from triggering unwanted calibrations. These features enable the product’s high level of performance and accuracy in space-grade applications. 

Pricing and Availability
The ADC08D1000WG-QV is available now in a 128-lead multi-layer ceramic quad flat package. It is space-grade qualified to MIL-STD-38535 QML level V and can be purchased as the standard military drawing (SMD) 5962-0520601VZC. For more information about the ADC08D1000WG-QV including pricing, how to order samples or an evaluation board, please contact your local sales office or authorized distributor. For technical information or to download a datasheet, visit http://www.national.com/pf/DC/ADC08D1000.html.

Note to editors: To view a high-resolution downloadable photo of the ADC08D1000WG-QV, visit National's photo gallery.

About National’s Data Conversion Portfolio
National Semiconductor is a leading provider of high-speed and general-purpose data converters. Based on current World Semiconductor Trade Statistics (WSTS) market data, National has doubled its data conversion market share over the past three years. National’s portfolio is rich in differentiated products that offer a unique set of value-added features, including the fastest 8-bit converters with speeds up to 3 GSPS, 12- and 14-bit converters featuring the industry’s highest input bandwidth of 1.1-GHz at speeds up to 170 MSPS, and the easiest-to-use family of pin- and function-compatible 8-, 10- and 12-bit general-purpose analog-to-digital and digital-to-analog converters with speeds up to 1 MSPS. National’s products offer the optimal performance at the lowest power consumption for communications infrastructure, ultrasound medical imaging, test and measurement, and other applications. For more information about National’s data conversion products, visit www.national.com/adc

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. In addition, National has supplied fully qualified space grade material for space applications for more than 30 years. 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