Texas Instruments The ADC11DV200 is a dual 11-Bit, 200 Msps A/D Converter ADC11DV200EB/NOPB ADC11DV200EB/NOPB Datenbogen
Produktcode
ADC11DV200EB/NOPB
4
http://www.national.com
Figure 2. Test Set up
3.0 Quick Start
Refer to Figure 1 for locations of jumpers, test points and
major components. Refer to Figure 2 for the test set up.
The board is configured by default to use a external clock
source and internal reference. Refer to Section 4.0 and
the Appendix for more information on jumper settings.
The input network of this board is configured for input
frequencies greater than 70MHz. Refer to Section 4.1 for
more information about input networks.
major components. Refer to Figure 2 for the test set up.
The board is configured by default to use a external clock
source and internal reference. Refer to Section 4.0 and
the Appendix for more information on jumper settings.
The input network of this board is configured for input
frequencies greater than 70MHz. Refer to Section 4.1 for
more information about input networks.
You must have version 5.0 or later of the WaveVision™
software to properly test this board. You can download
the latest version from:
software to properly test this board. You can download
the latest version from:
http://www.national.com/analog/adc/wavevision5
1. Apply power to the WaveVision5™ board and
connect it to the computer using a USB cable. See
the WaveVision5™ Board Manual for operation of
that board. Connect the evaluation board to the
WaveVision™ Digital Interface Board.
the WaveVision5™ Board Manual for operation of
that board. Connect the evaluation board to the
WaveVision™ Digital Interface Board.
2. Connect a clean +5V power supply to pin 2 of Power
Connector JR507. Pin 1 is ground.
3. Connect a signal from a 50-Ohm source to
connector J301 or J302. Be sure to use a bandpass
filter before the Evaluation Board.
filter before the Evaluation Board.
4. Adjust the input signal amplitude as needed to
ensure that the signal does not over-range by
examinining a histogram of the output data with the
WaveVision5™ software.
examinining a histogram of the output data with the
WaveVision5™ software.
4.0 Functional Description
The ADC10DV200 Evaluation Board schematic is shown
in Section 6. A list of test points and jumper settings can
be found in the Appendix.
in Section 6. A list of test points and jumper settings can
be found in the Appendix.
4.1 Analog Input
To obtain the best distortion results the analog input
network must be optimized for the signal frequency being
applied. The ADC10DV200 Evaluation Board comes
configured as seen in Figure 3.
network must be optimized for the signal frequency being
applied. The ADC10DV200 Evaluation Board comes
configured as seen in Figure 3.
Figure 3. Analog Input Network for F
IN
> 70MHz
The input network is intended to accept a low-noise sine
wave and will perform well over a wide input frequency
range. To accurately evaluate the dynamic performance
of this converter, the input test signal will have to be
passed through a high-quality bandpass filter.
wave and will perform well over a wide input frequency
range. To accurately evaluate the dynamic performance
of this converter, the input test signal will have to be
passed through a high-quality bandpass filter.