Evaluates: MAX11905 MAX11905 Differential Evaluation Kit General Description Features The MAX11905 differential evaluation kit (EV kit) demon- Peripheral Module and FMC Connector for Interface strates the MAX11905, 20-bit, 1.6Msps, single-channel, 75MHz SPI Clock Capability through FMC Connector fully differential SAR ADC with internal reference buffers. 37.5MHz SPI Clock Capability through Peripheral The EV kit uses the MAX44205, a low-noise fully differen- Module Connector tial operational amplifier. The EV kit includes a graphical Sync In and Sync Out for Coherent Sampling user interface (GUI) that provides communication from Avnets ZedBoard development board for the Xilinx On-Board Input Buffer (MAX44205) Zynq -7000 SoC. The ZedBoard, not included with the On-Board +3.0V Reference Voltage (MAX6126) EV kit, must be purchased through Avnet, Inc. Windows XP-, Windows Vista-, Windows 7-, and The ZedBoard communicates with the PC through an Windows 8/8.1-Compatible Software Ethernet cable using Windows XP -, Windows Vista -, Windows 7-, or Windows 8/8.1-compatible software. Ordering Information appears at end of data sheet. The EV kit comes with the MAX11905ETP+ installed. System Block Diagram MAX11905 DIFFERENTIAL EV KIT ZedBoard REFVDD ANALOG + INPUT ETHERNET SCLK PORT VCLPH DIN FMC OR OUT+ PERIPHERAL MAX44205 VOCM MAX11905 DOUT MODULE OUT- ANALOG CNVST VCLPL INPUT + VREF GND MAX6126 ZedBoard is a trademark of Avnet, Inc. Zynq is a registered trademark of Xilinx, Inc. Windows, Windows XP, and Windows Vista are registered trademarks and registered service marks of Microsoft Corporation. 19-7464 Rev 1 12/16Evaluates: MAX11905 MAX11905 Differential Evaluation Kit 5) Connect the USB cable from the PC to the Zed- Quick Start Boards USB programming connector (J17). Required Equipment 6) Verify that the ZedBoards jumpers JP7, JP8, and MAX11905 differential EV kit with SD card JP11 have shunts installed at the GND position, and JP9 and JP10 at the 3V3 position. ZedBoard development board (includes Micro-USB 7) Move the shunt of J18 of the ZedBoard from 1V8 to A-to-B cables) the 3V3 position. Windows PC 8) Insert the SD card with the boot image (BOOT.bin). Ethernet cable 9) Verify that all jumpers on the EV kit are in their de- fault positions, as shown in Table 1. +5V DC power supply 10) Connect the ZedBoard to J2 on the EV kit for FMC 5V dual DC power supply connection. If the peripheral module is used, the Signal generator with differential outputs (e.g., Audio ZedBoards JA1 connector must be connected to J1 Precision 2700 series) on the EV kit. 11) Connect the positive terminal of the +5V supply to Soldering iron and 2-pin, 2.54 header the +5V test point and the negative terminal to the Note: In the following sections, software-related items are GND test point. identified by bolding. Text in bold refers to items directly 12) Connect the +5V of the dual supply to the VS+ test from the EV kit software. Text in bold and underlined point, the -5V supply to the VS- test point, and the refers to items from the Windows operating system. ground to the GND test point. 13) The configuration of the op amp is gain of 0.5. Set Procedure the signal generator to 11.95V and 10kHz to the P-P The EV kit is fully assembled and tested. Follow the steps INP and INM SMA connectors or test points on the below to verify board operation: EV kit. 1) Download the LabVIEW Run-Time Engine 2013 14) Turn on the power to the ZedBoard. from www.ni.com/download/labview-run-time-en- 15) Turn on all power supplies. gine-2013/4059/en/. 16) Enable the function generator. 2) Visit www.maximintegrated.com/evkitsoftware to 17) Open the EV kit GUI, MAX11905EVKit.exe. download the latest version of the EV kit software, 18) Verify that the IP Address is 192.168.1.10, the port 11905EVKit.ZIP. Save the EV kit software to a tem- is 6001, and that the status bar displays TCP/IP porary folder and uncompress the ZIP file. Connection to Zedboard is successful and Con- 3) Solder the 2-pin header on J18-3V3 of the ZedBoard. nected to ZedBoard (MISO = 1). 4) Connect the Ethernet cable from the PC to the Zed- 19) Click on the Set button within the Configuration tab. Board and configure the Internet Protocol Version 20) Click on the FFT tab (Figure 6) and start capturing data. 4 (TCP/IPv4) properties in the local area connection to IP address 192.168.1.2 and the subnet mask to 255.255.255.0. LabVIEW is a registered trademark of National Instruments Corporation. Maxim Integrated 2 www.maximintegrated.com