Design Description
This reference design platform provides a quick and easy method for evaluating the ADC083000 Analog to Digital Converter along with all the necessary clock generation and conditioning and front end amplifiers. The design includes an FPGA and local processor to provide an interface to National Semiconductor's WaveVision software to allow data capture directly to a PC. The design only requires a signal source, which should include an in-line passive filter, and a USB cable to connect to a PC. The WaveVision software will configure the board and allow the user to make changes to the system. Optionally an external clock source can be used if alternate sample rates are required.
ADC083000 Key Features
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Internal Sample-and-Hold
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Single +1.9V ±0.1V Operation
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Choice of SDR or DDR output clocking
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Guaranteed No Missing Codes
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Serial Interface for Extended Control
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Adjustment of Input Full-Scale Range and Offset
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Duty Cycle Corrected Sample Clock
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Test pattern
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High-Speed Signal Path Video
| Watch as National Semiconductor's Rick Zarr takes you through some of the latest innovations that National is announcing to help solve designers' analog problems, including a demonstration of an evaluation and reference design board that combines a number of National's industry-leading I-C's into one valuable reference design. |
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Design Resources
Additional Resources
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ADC083000 - 8-Bit, 3 GSPS, High Performance, Low Power A/D Converter |
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LMX2531 - Frequency Synthesizer System, Integrated VCO |
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LMH6555 - Low Distortion 1.2 GHz Differential Driver |
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LM3722 - 5-Pin Microprocessor Reset Circuits |
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LM95221 - Dual Remote Diode Digital Temperature Sensor with SMBus Interface |
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LM2734 - Thin SOT23 1A Load Step-Down DC-DC Regulator |
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LM2676 - SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator |
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LP2986 - Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage Regulator |
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LP2989 - Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator |
Board Photo
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Features
On the input side:
- The user can use the on-board clock source or provide their own clock source and operate the ADC under various sampling frequencies.
- The analog input has two ports, one for single-ended sources and one for differential sources.
On the output side:
- The USB port is provided to transfer digital data from the ADC to a PC for processing.
- The Expansion connector and trigger input allow digital data to be ported to the user's platform for proprietary post processing.
Other capabilities:
- There is a JTAG port for the FPGA to enable programming and debug of FPGA functions.
- There is a Mictor connector that allows access to the digital data/clock stream by a logic analyzer.
Purchasing Information
The ADC08B3000RB/NOPB Reference Design board can be purchased directly from National
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RD-143 Reference Design Document
Design Files (Schematic, Board Layout, BOM, and Software)
