User guide

Hardware guide

Hardware configuration

The ADMX6001-EBZ connects to the VCU118 FPGA carrier via the FMC+ HSPC connector. The board provides two digitization paths:

  • High-speed path: AD9213 12-bit ADC at 10 GSPS, driven by the ADL5580 differential amplifier

  • Precision path: AD4080 20-bit SAR ADC (40 MSPS max, 31.25 MSPS operational) reducing 1/f noise for low-frequency signals

Power supply

The ADMX6001-EBZ requires an external power supply — it is not powered through the FMC+ connector. Two independent 12 V / 65 W supplies are required: one for the ADMX6001-EBZ and one for the VCU118.

Warning

Always power up the ADMX6001-EBZ before the VCU118. Power down in reverse order. Incorrect power sequencing may damage the boards.

Analog inputs

Connect a benchtop function generator to the analog input of the ADMX6001-EBZ:

  • The high-speed path (AD9213) accepts signals up to 5 GHz. Use a low-noise, low-jitter source with appropriate band-pass filtering.

  • The precision path (AD4080) accepts lower-frequency differential signals. The ADL5580 driver conditions the input for the AD9213.

DC offset adjustment

The LTC2664 quad DAC provides a programmable DC offset on the AD9213 input, allowing the operating point to be shifted for maximum dynamic range utilization. The DAC output value is calculated as:

\[\text{DAC value} = 32768 \times \left(1 + \frac{x}{5000}\right)\]

where x is the desired DC offset in millivolts. The default value of 32768 corresponds to 0 V. The output range spans −5 V to +5 V.

Schematic, PCB Layout, Bill of Materials

Design and integration files (schematic, PCB layout, BOM) are available from the ADMX6001-EBZ product page under the Design Resources tab.

Software guide

The ADMX6001-EBZ is supported through the Libiio library. Applications that interface via libiio include:

For a step-by-step walkthrough, see the VCU118 Quickstart guide.