AD9265-FMC-125EBZ no-OS Example Project

See projects/ad9265-fmc-125ebz (doxygen) for the Doxygen documentation.

Supported Evaluation Boards

Overview

The AD9265 is a 16-bit, 125 MSPS analog-to-digital converter (ADC) designed to support communications applications where high performance combined with low cost, small size, and versatility is desired. The ADC core features a multistage, differential pipelined architecture with integrated output error correction logic to provide 16-bit accuracy at 125 MSPS data rates and guarantees no missing codes over the full operating temperature range. The AD9265-FMC-125EBZ evaluation board provides all of the support circuitry required to operate the AD9265 in its various modes and configurations, with a built-in SPI interface for setup and control.

Applications

  • Communications

  • Multimode digital receivers (3G)

    • GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA

  • Smart antenna systems

  • General-purpose software radios

  • Broadband data applications

  • Ultrasound equipment

Hardware Specifications

Power Supply Requirements

The AD9265-FMC-125EBZ evaluation board requires specific power supplies for optimal performance. The core voltage supplies, AVDD and DVDD, should be between 1.7 V and 1.9 V, with AVDD typically requiring 194 mA to 202 mA. The digital output power, controlled by DRVDD, operates within the same voltage range, requiring 24 mA for CMOS and 49 mA for LVDS output configurations. Total power consumption ranges from 373 mW to 439 mW, influenced by output mode and load conditions. Power-saving modes include standby at 54 mW and power-down at 0.05 mW. Adhering to these requirements ensures accurate ADC functionality.

On-board Connectors

Connector Type

Description

SMA (J100)

Analog signal source connector, used for inputting analog signals into the board.

USB

Interface for connecting to a computer or other USB-compatible devices.

Power Supply (12 V)

Connector for supplying power to the board.

FMC LPC

Used to connect to FPGA carrier boards.

Clock Input (J201)

External clock signal input for ADC sampling.

No-OS Build Setup

Please see: https://wiki.analog.com/resources/no-os/build

No-OS Supported Examples

The initialization data used in the examples is taken from: Project Source Path

Demo Example

The demo example initializes the AD9265 ADC via the AXI ADC core and AXI DMAC, runs test pattern verification on the digital output lanes, and performs a DMA capture of ADC samples into DDR memory.

IIO Example

The IIO example launches an IIOD server on the carrier board so that the user may connect to it via an IIO client. Using the IIO Oscilloscope application, users can configure the AD9265 ADC and visualize captured data from the 16-bit, 125 MSPS ADC.

If you are not familiar with ADI IIO Application, please take a look at: IIO No-OS

If you are not familiar with ADI IIO Oscilloscope Client, please take a look at: IIO Oscilloscope

No-OS Supported Platforms

Xilinx

Used Hardware

Connections

  • Mount the AD9265-FMC-125EBZ to the ZC706 through the FMC LPC connector.

  • Enable SD Card BOOT mode by switching SW11 to:

    Switch

    Position

    SW11-1

    DOWN

    SW11-2

    DOWN

    SW11-3

    UP

    SW11-4

    UP

    SW11-5

    DOWN

  • Insert the SD card into the SD card slot (J100). Ensure that the boot files are properly loaded in the card before use.

  • Connect a micro-USB cable to the ZC706 board via the USB-UART connector (J1), and the other end of the cable to the host PC.

  • Connect the power supply to the 12 V Power Input Connector (J22).

  • Switch ON the ZC706 board via SW1; the green LED (DS22) will illuminate when power is ON.

Build Command

The Xilinx platform uses the CMake/Ninja build system via the no_os_build.py helper script. Available variants: demo, iio. Available boards: zc706.

For toolchain setup and prerequisites, see the Xilinx CMake build guide.

# Source the Vitis toolchain environment (adjust version as needed)
source ~/.xilinx/2025.1/Vitis/settings64.sh

cd no-OS

# build the demo example
python tools/scripts/no_os_build.py build \
   --project ad9265-fmc-125ebz --variant demo --board zc706 \
   --hardware /path/to/system_top.xsa

# build and flash
python tools/scripts/no_os_build.py build \
   --project ad9265-fmc-125ebz --variant demo --board zc706 \
   --hardware /path/to/system_top.xsa \
   --probe openocd --flash

# build the IIO example
python tools/scripts/no_os_build.py build \
   --project ad9265-fmc-125ebz --variant iio --board zc706 \
   --hardware /path/to/system_top.xsa

# build and flash the IIO example
python tools/scripts/no_os_build.py build \
   --project ad9265-fmc-125ebz --variant iio --board zc706 \
   --hardware /path/to/system_top.xsa \
   --probe openocd --flash