Datasheet

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5 Using the EVM
5.1 Reference Design
5.2 Prototype Board
5.3 Software Test Platform
Using the EVM
The ADS8380EVM serves three functions:
1. As a reference design
2. As a prototype board
3. As a software test platform
As a reference design, the ADS8380EVM contains the essential circuitry to showcase the analog-to-digital
converter. This essential circuitry includes the input amplifier, reference circuit, and buffers. The EVM
analog-input circuit is optimized for a 100-kHz input signal; therefore, users may need to adjust the
resistor and capacitor values to accommodate higher frequencies. In ac-type applications where signal
distortion is a concern, polypropylene or C0G-type capacitors are recommended for use in the signal path.
As a prototype board, the buffer circuit has resistor pads for configuring the input as either single-ended or
fully differential input. The input circuit can be modified to accommodate user prototype needs, whether it
be evaluating another differential amplifier or limiting noise for best performance. The analog, power, and
digital connectors can be made to plug into a standard 0.1-in. breadboard or ribbon cables to interface
directly to FPGAs or processors.
As a software test platform, connectors P1 and P2 plug into the serial interface connectors of the 5-6K
Interface Board. The 5-6K Interface Board plugs into the TMS320C5000 and TMS320C6000 Digital Signal
Processor starter kits (DSK). See the 5-6K Interface Board User’s Guide (SLAU104 ) for more information.
ADS8380EVM 6 SLAU146 – December 2004