EVAL-AD9246S

This version (05 Sep 2018 21:02) was approved by J.Harris.The Previously approved version (17 Jan 2018 16:56) is available. EVALUATING THE AD9246S ANALOGTO-DIGITAL CONVERTER Preface This user guide describes the AD9246S evaluation board which provides all of the support circuitry required to operate this product in its various modes and configurations. The application software used to interface with the devices is also described. The evaluation board has Tyco connectors that mate to the HSC-ADC-EVALCZ data capture board. The AD9246S and AD9246 data sheets provide additional information and should be consulted when using the evaluation board. All documents and software tools are available at www.analog.com/hsadcevalboard. For additional information or questions, send an email to aero@analog.com. Typical Measurement Setup Figure 1. AD9246S Evaluation Board Connection (6V DC Wall Power)—EVAL-AD9246S Features • • • • • • Full featured evaluation board for the AD9246S SPI interface for setup and control External clocking Balun/transformer input drive On-board LDO regulator needing a single external 6 V, 2 A DC supply VisualAnalog® and SPI controller software interfaces Helpful Documents • • • • • • • • AD9246S military data sheet AD9246 data sheet High speed ADC FIFO evaluation kits (HSC ADC Data Capture Boards) High speed ADC FIFO evaluation kit Wiki Page (HSC-ADC-EVALCZ) AN-905 Application Note, VisualAnalogTM Converter Evaluation Tool Version 1.0 User Manual AN-878 Application Note, High Speed ADC SPI Control Software AN-877 Application Note, Interfacing to High Speed ADCs via SPI AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation Evaluation Board Files The evaluation board layout, BOM, and schematic files for the EVAL-AD9246S board can be downloaded from the links below. DISCLAIMER: The footprint used for layout on the evaluation board is provided for general reference only. The exact footprint required for mounting this device onto a printed circuit board will depend on the device lead forming and may differ from what is provided herein. It is recommended to generate specific footprint information from the users lead forming specifications when placing this device on the application printed circuit board. Artwork: 09-046595-01a.zip BOM: 05-046595-01-a.zip Schematic: 02_046595a_top_wiki.pdf Equipment Needed • • • • Analog signal source and antialiasing filter Sample clock source (Rohde-Schwarz SMA100A or similar low phase noise signal generator) (1) 6.0 V, 2.5 A switching power supply, CUI EPS060250UH-PHP-SZ provided (1) 6.0 V, 2 A switching power supply, RAI S060S200A1 provided • • • • PC running Windows® USB 2.0 port EVAL-AD9246S board HSC-ADC-EVALCZ FPGA-based data capture kit Visual Analog Canvases and FPGA File Needed The canvas files required to run the EVAL-AD9246S board need to be downloaded, unzipped, and saved to an accessible location. The canvas files can be downloaded from here: ad9246s_va_canvases.zip The FPGa file can be download from here: ad9265_cmos.zip Getting Started This section provides quick start procedures for using the EVAL-AD9246S board. Both the default and optional settings are described. Configuring the Board Before using the software for testing, configure the evaluation board as follows: 1. Connect the evaluation board to the data capture board, as shown in Figure 1. 2. Connect one 6 V, 2 A switching power supply (such as the Royal Access, Inc., S060S200A1 that is supplied) to the EVAL-AD9246S. 3. Connect one 6 V, 2.5 A switching power supply (such as the supplied CUI, Inc., EPS060250UH-PHP-SZ) to the HSC-ADC-EVALCZ board. 4. Connect the HSC-ADC-EVALCZ board (P702) to the PC using a USB cable. 5. On the ADC evaluation board, confirm that the correct jumpers are installed. 1. Jumpers should be placed P204, P205, P203, and P206 2. Additionally, jumpers should be placed on pins 1-2, pins 4-5, and pins 8-9 of P500. 3. See Figure 2 as well as Table 1 for more details. 6. On the ADC evaluation board, use a clean signal generator with low phase noise to provide an input signal to the AD9246S analog input. Use a 1 m, shielded, RG-58, 50 Ω coaxial cable to connect the signal generator. For best results, use a narrow-band, band-pass filter with 50 Ω terminations and an appropriate center frequency. (Analog Devices, Inc., uses TTE, Allen Avionics, and K&L band-pass filters.) Evaluation Board Hardware The evaluation board provides the support circuitry required to operate the AD9246S in its various modes and configurations. Figure 1 shows the typical bench characterization setup used to evaluate AC performance. It is critical that the signal sources used for the analog input and clock have very low phase noise (