Digilent Inc, An NI Company

Implementation of High Speed Digital Signal Processing System on Xilinx Zynq All Programmable SoC Platform

Signal processing applications require high computing performance and power efficiency. Digilent’s latest Eclypse Z7, an embedded measurement system, can provide the solution. Eclypse Z7 is ideal for high-speed instrumentation, control, and measurement systems for edge-computing, medical, and communications applications

Eclypse Z7 as an embedded measurement system

The Eclypse Z7 ecosystem includes Eclypse Z7 development platform, the Zmod ADC 1410 and Zmod DAC 1411. Both Zmods are 100 MSPS and 14-bit data converters. The Eclypse Z7 development platform features a Zynq 7020 FPGA SoC from Xilinx and two high-speed connectors using Opal Kelly’s new SYZYGY standard, which pairs with Digilent’s new Zmod family to allow for high performance I/O. Plug in your application specific Zmods and get up and running in hours or days, instead of weeks or months.

The  Zmod ADC 1410 is equipped with Analog Devices AD9648, the dual channel, high speed, low power, 14-bit, 105MS/s Analog to Digital Converter (ADC). Driven by the SYZYGY carrier, the Zmod ADC can acquire two simultaneous signals (1MΩ, ±25V, single-ended, 14-bit, 100MS/s, 70MHz+ bandwidth). Analog inputs can be connected to a circuit using SMA cables.

The Zmod DAC 1411 is equipped with Analog Devices AD9717 the dual channel, high speed, low power, 14-bit, 125MS/s Digital to Analog Converter (DAC). Driven by the SYZYGY carrier, the Zmod DAC can generate two simultaneous signals (50Ω, ±5V, single-ended, 14-bit, 100MS/s, 40MHz+ bandwidth). The analog outputs can be connected to a circuit using SMA cables.

Implementation of signal processing system

The Eclypse Z7 ecosystem also comes with a free example project. This shows users the implementation of a signal processing system. In the system, Digilent Analog Discovery, a USB multi-instrument, is used to generate analog signals and visualize output signals in frequency domain.

Analog Discovery 2 is connected to the Zmod ADC 1410 input channel 1. The analog signals from Analog Discovery 2 are converted to digital through the Zmod ADC 1410 and then passed on to the input of a digital low pass filter. The digital low pass filter is created by Xilinx FIR compiler 7.2 IP Core. The filter’s outputs are converted back to analog through the Zmod DAC 1411. These digital signals can be visualized through Zmod DAC 144 output channel 1.  To correct the phase errors, there is a digital loopback by connecting Zmod ADC 1410 output channel directly to the Zmod DAC 1411 input channel 1

The project details and source files are available at Digilent Wiki

The Eclypse Z7, Zmod ADC and Zmod DAC are available in Elfa Distrelec now.