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This version (07 Feb 2024 00:12) was approved by Sid Das.The Previously approved version (29 Nov 2023 22:36) is available.Diff

Data Converter Overview

As Marlin is an Rx-heavy platform, an analog-to-digital converter is necessary that can handle 16-channel operation while maintaining low power consumption. The AD9083 Analog-to-Digital Converter is ideal for this application, as it is a low power 16-channel continuous time Σ-Δ ADC with the ability to handle 16 channels at 125MHz bandwidth. It includes integrated DSP blocks that help to reduce the overall footprint of the Marlin system front end components and also features several power-down options that allow for power savings when needed. The configurable JESD204B interface reduces PCB complexity for the overall system as well. A key feature of the AD9083 that is applicable to the Marlin platform specifically is the ability to support multi-device synchronization.

For the Tx side, a AD9106 Digital-to-Analog Converter is used which supports up to 180 MSPS sample rates while also having low power dissipation (typ. 315.25mW at 180MSPS). This DAC utilizes on-chip direct digital synthesizer (DDS) to generate complex waveforms. SPI ports on the AD9106 allow for easy interfacing between the FPGA and the chip.

resources/eval/developer-kits/x-band-lpdbf/digitizer-overview.txt · Last modified: 07 Feb 2024 00:12 by Sid Das