1 http://www.National.Com national semiconductor dec. 19, 2007 rev - 1.0 cmc evaluation board user's guide dac121c08xeb, dac101c08xeb, dac081c08xeb micro power digital-to-analog converter (dac) with an i 2 c-compatible interface 12-bit 10-bit 8-bit dac121c085/ dac121c081 dac101c085/ dac101c081 dac08...
2 http://www.National.Com table of contents 1.0 introduction ........................................................................................................... 3 2.0 board assembly.................................................................................................... 4 3.0 quic...
3 http://www.National.Com 1.0 introduction the dac121c08xeb design kit (consisting of the dac evaluation board and this user's guide) is designed to ease evaluation and design-in of national semiconductor’s dac121c081/dac121c085 family of digital-to- analog converters (dacs). The micro-power dacs fe...
4 http://www.National.Com 2.0 board assembly the dac121c08xeb evaluation board comes fully assembled and ready for use. Refer to the bill of materials for a description of components, to figure 1 for major component placement, and to figure 12 for the evaluation board schematic. 3.0 quick start the ...
5 http://www.National.Com 3.2 computer mode refer to figure 1 for locations of test points and major components. The board comes configured for “plug-and-play” wavevision evaluation. 1. Run the wavevision 4 program, version 4.4 or higher is required to interface to the wv4 board. While the program i...
6 http://www.National.Com 4.0 functional description 4.1 jumper settings table 1 describes the function of the various jumpers on the dac121c08xeb evaluation board. The evaluation board schematic is shown in figure 12. Jumper pins 1 & 2 pins 2 & 3 jp4 v out load select (see below) jp5 i 2 c address ...
7 http://www.National.Com 4.4 analog output the analog output of this eval board is available in two places. For a dc coupled output, pin 1 of j5 provides v out and pin 2 provides agnd. An ac coupled output is provided by the sma connector (j4). See figure 5 below for details. If using a spectrum an...
8 http://www.National.Com 5.0 software operation and settings the wavevision4 software is included with the wavevision4 board and the latest version can be downloaded from national's web site at http://www.National.Com/adc. Wavevision4 software version 4.4 or later is required to evaluate this devic...
9 http://www.National.Com 10. Configure the digital waveform to be converted by the dac as seen in figure 11. Please see the wavevision4 user’s manual for detailed instructions. The ability to drive preset waveforms or custom data is provided. Figure 11: waveform configuration 11. Press the “start” ...
10 http://www.National.Com 7.0 hardware schematic figure 12: dac121c08xeb evaluation board schematic sc lh s _e sc lh s _e sd a s c l sd a_ d u t s c l_ dut sc l sd a sd a_ d u t s c l_ dut vou t 1 tp 6 3p 3v _r e m o t e 1 tp 4 va 1 2 jp 6 i_ vr ef c1 1 0. 1u f 2 4 6 8 10 12 14 1 3 5 7 9 11 13 j1 w...
11 http://www.National.Com 8.0 evaluation board bill of materials quantity reference pcb footprint source source part # rating value 1 c1 rc0603 10v 200pf 6 c2,c4,c6,c8,c10,c11 rc0603 10v 0.1uf 4 c3,c5,c7,c9 c1206 10v 1uf 2 d1,d2 d1206-21 digikey 516-1440-1-nd red led 1 jp4 hdr2x2 header 4x2_0 1 jp5...
12 http://www.National.Com appendix a1.0 summary tables of test points, jumpers, and connectors test points on the dac121c08xeb evaluation board tp1: agnd ground. Located at the top center of the board. Tp2: agnd ground. Located at the top center of the board. Tp3: agnd ground. Located at the bottom...
13 http://www.National.Com [blank page].
14 http://www.National.Com by using this product, you are agreeing to be bound by the terms and conditions of national semiconductor's end user license agreement. Do not use this product until you have read and agreed to the terms and conditions of that agreement. If you do not agree with them, cont...
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