revision history rev date description 0.1 20090129 initial version. quick start demo da1x05 demonstration board for DAC1405D650 rev. 0.1 ? 29 january 2009 quick start document information info content keywords demo da1x05, pcb2073-1, demons tration board, dac, converter, DAC1405D650 abstract this document describes how to us e the demonstration board demo da1x05 for the digital-to-analog converter DAC1405D650. overview
1. quick start 1.1 setup overview figure fig 1 presents the connections to measure demo da1x05. fig 1. demo da1x05 setup pattern generator i0 (lsb) to i13 (msb) ( dac in p ut channel i ) s ynchronized spectrum analyzer rfout ( aqm out p ut si g nal ) power supply a ps1612 / 7.5 v pulse generator lo ( aqm lo in p ut ) usb spi dac1x05.exe spectrum analyzer ioutbp ( dac out p ut channel b ) spectrum analyzer ioutbp ( dac out p ut channel b ) pulse generator clk ( dacclock in p ut ) pattern generator q0 (lsb) to q13 (msb) ( dac in p ut channel q )
1.2 power supply table 1. general power supply name function view u1 pwr ? general power supply 7.5v v dc tp1 5v0a test point ? analog power supply 5.0 v dc tp3 3v3a test point ? analog power supply 3.3 v dc tp7 1v8a test point ? analog power supply 1.8 v dc tp5 3v3io test point ? i/o power supply 3.3 v dc tp9 1v8a test point ? analog power supply 1.8 v dc tp2, tp4, tp8, tp6, tp10 gnd test point ? ground 1.3 digital inputs table 2. digital inputs name function view tb2 i data connector ? channel i digital input (i0 to i13) tb1 q data connector ? channel q digital input (q0 to q13) j16 clk connector ? dac clock input j14 lo connector ? aqm lo input dac output connected to the output transformers resistor network dac output connected to the aqm
1.4 analog outputs table 3. analog outputs name function view j17 ioutap connector ? dac channel a analog output signal (positive analog output signal when ioutan is used) j18 ioutan connector ? dac channel a negative analog output signal j13 ioutbp connector ? dac channel b analog output signal (positive analog output signal when ioutbp is used) j19 ioutbn connector ? dac channel b negative analog output signal j15 rfout connector ? aqm analog output 1.5 spi interface table 4. spi interface name function view bp1 reset button ? hardware reset of the dac registers j1 spi test point ? external connection to scs_n, sclk, sdio and sdo j2 spi connector ? usb input for spi programming
2. example 2.1 setup example fig 2. DAC1405D650 hardware setup 81134a agilent 3.35 ghz pulse generator tla714 + 7pg2 tektronix pattern generator fsq3 rohde & schwarz signal analyzer 20 hz ? 3.6 ghz tla714 + 7pg2 tektronix pattern generator fsq3 rohde & schwarz signal analyzer 20 hz ? 3.6 ghz s ynchronized power supply a ps1612 / 7.5 v usb spi dac1x05.exe 81134a agilent 3.35 ghz pulse generator fsq3 rohde & schwarz signal analyzer 20 hz ? 3.6 ghz
3. spi quick start 3.1 install ? step 1 connect the device to a usb port on your pc. windows ? found new hardware wizard ? will be launched. select ? no, not this time ? from the options available and then click ? next ? to proceed with the installation. ? step 2 select ? install from a list or specific location (advanced) ? as shown below and then click ? next ?.
? step 3 select ? search for the best driver in these locations ? and enter the file path of the folder ? driver_2xx ? in the combo-box (?c:\driver_2xx? in the exam ple below) or browse to it by clicki ng the browse button. once the file path has been entered in the box, click ? next ? to proceed. ? step 4 windows should then display a message indicating that the installation was successful. click ? finish ? to complete the installation for the first port of the device.
? step 5 the found new hardware wizard will continue by installi ng the usb serial converter driver for the second port of the device. the procedure for installin g the second port is identical to that for installing the first port from the first screen of the found new hardware wizard. once the second port is installed, the device should be ready to be used. 3.2 spi interface ? step 1 install the labview run-time engine (if not already installed). ? step 2 start the labview application ?dac1x05.exe?. click on the ? run continuously ? button, program each register using the buttons in the clusters, then click ? send ?. the registers are now programmed. the page common-phinco allows to adjust the main settings of the dac1x05d650. the page dac_cfg allows to adjust the gain and the digital offset of each dac. the page dac_aux allows to adjust t he current of each auxiliary dac. the page dac_current is only for debug and should not be used in the application. run continuously send
? load excel a file with all the pattern can be loaded directly via the spi interface. the file ? initial.xls ? is an example of file with the default configuration. ? read in the read page, click on ? read ? and the register?s value will be displayed in the ? registers ? fields. you can also read one register by wr iting its address in ? address ? field.
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