1 http://www.National.Com national semiconductor july 25, 2006 rev - 2.1/cs rohs compliant evaluation board user's guide adc121s625 12-bit, 50 ksps to 200 ksps, differential input, micro-power sampling a/d converter.
2 http://www.National.Com table of contents 1.0 introduction 3 2.0 board assembly 3 3.0 quick start 4 3.1 stand alone mode 4 3.2 computer mode 4 4.0 functional description 5 4.1 the signal input 5 4.2 adc reference circuitry 5 4.3 adc clock circuit 5 4.4 digital data output 5 4.5 power supply connec...
3 http://www.National.Com 1.0 introduction the adc121s625eval/rohs design kit (consisting of the adc121s625b evaluation board and this user's guide) is designed to ease evaluation and design-in of the national semiconductor adc121s625 12-bit analog-to- digital converter, which can operate at speeds ...
4 http://www.National.Com figure 1 component and test point locations 3.0 quick start the adc121s625b evaluation board may be used in the stand-alone mode to capture data with a logic analyzer or third party equipment, or it may be used in the computer mode with a wavevision4 data capture (wv4) boar...
5 http://www.National.Com 4.0 functional description table 1 describes the function of the various jumpers on the adc121s625b evaluation board. The evaluation board schematic is shown in figure 2. Jumper pins 1 & 2 pins 2 & 3 jp1 select va as the vref select 2.5v reg. As the vref jp2 short pins 1 & ...
6 http://www.National.Com the wavevision4 software is included with the wv4 board and the latest version can be downloaded for free from national's web site at http://www.National.Com/adc . To install this software, follow the procedure in the wavevision4 board user's guide. Once the software is ins...
7 http://www.National.Com 6.0 hardware schematic figure 2 adc121s625b evaluation board schematic c2 a 0. 1uf vi n _ a c cs b va sd a va va va 3p 3v do ut j2 vi n _ ac 1 2 3 c1 1. 0uf va c2 b 0. 1 u f ag n d ag n d ag n d ag n d 5p 0 v _r e m o t e r1 1 5 1 va s e l e c t io n 5p0v c9 ns c1 3 0. 1 u ...
8 http://www.National.Com 7.0 evaluation board specifications board size: 3.0" x 3.0" (7.6 cm x 7.6 cm) power requirements min: +4.5v, 100ma max: +5.5v, 100 ma clock frequency range: 800 khz to 4.0 mhz analog input 0v to 2vref 8.0 adc121s625b evaluation board bill of materials item qty reference pcb...
9 http://www.National.Com 9.0 test points, connectors, and jumpers test points on the adc121s625b evaluation board tp1: agnd ground. Located at the bottom right area of the board. Tp2: agnd ground. Located at the center of the board. Tp3: agnd ground. Located at the top left area of the board. Tp4: ...
10 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...
