ADI公司的AD9172是高性能双路取样高达12.6 GSPS的16位数模转换器(DAC),具有8路15 Gbps JESD204B数据输入端口,高性能片上DAC时钟倍频器和数字信号处理功能,支持单波段和多波段无线应用, 1.8GHz时的SFDR) <−80 dBc , IMD = −83 dBc, 12GSPS双路模式时的功耗为2.55W,主要应用在无线通信底子设备,多带基站无线电,微波/E波段回程传输系统,,工业仪表,自动测试设备(ATE)和雷达与干扰器.本京电港论坛文章先容了AD9172产物亮点和主要特点,功能框架图,以及评估板AD9172-FMC-EBZ和电路原理图纸与质料清单. The AD9172 is a high performance, dual, 16-bit digital-to-analogconverter (DAC) that supports DAC sample rates to 12.6 GSPS.The device features an 8-lane, 15 Gbps JESD204B data input port,a high performance, on-chip DAC clock multiplier, and digitalsignal processing capabilities targeted at single-band and multibanddirect to radio frequency (RF) wireless applications. The AD9172 features three complex data input channels per RFDAC that are bypassable. Each data input channel includes aconfigurable gain stage, an interpolation filter, and a channelnumerically controlled oscillator (NCO) for flexible, multibandfrequency planning. The device supports up to a 1.5 GSPS complexdata rate per input channel and is capable of aggregating multiplecomplex input data streams up to a maximum complex data rateof 1.5 GSPS. Additionally, the AD9172 supports ultrawidebandwidth modes bypassing the channelizers to providemaximum data rates of up to 3.08 GSPS (with 16-bit resolution)and 4.1 GSPS (with 12-bit resolution).The AD9172 is available in a 144-ball BGA_ED package. AD9172产品亮点: 1. Supports single-band and multiband wireless applicationswith three bypassable complex data input channels per RFDAC at a maximum complex input data rate of 1.5 GSPS.One independent NCO per input channel. AD9172主要特性: AD9172应用: Wireless communications infrastructure 评估板AD9172-FMC-EBZ To operate the evaluation board, the user must attach the board to a compatible FMC carrier board, such as those provided by FPGA vendors. Analog Devices produces an FPGA carrier called the ADS7-V2, which serves as a digital pattern generator or data source as well as the power supply for the boards. The AD9172 board has an option to be powered from a lab power supply when used in a special NCO-only mode. This operation is described in more detail in the User ’ s Guide. The user must be able to observe the DAC output on a spectrum analyzer. A low noise clock source is provided on the evaluations boards, the HMC7044 clock synthesizer, and an option exists for the user to supply a low jitter external sine or square wave clock as a clock source instead. The evaluation board comes with software, called ACE, which allows the user to program the SPI port. Via the SPI port, the DUT (and clock circuitry) can be programmed into any of its various operating modes. It also comes with the DAC Software Suite which includes the DPGDownloader for vector generation, download, and transmission to the evaluation board when using the ADS7-V2. Documentation and software updates for using High-Speed DAC Evaluation Boards are included in individual, self-extracting update files. The latest DPG Downloader software can be downloaded from here: High-Speed DAC Software Suite. The latest ACE software can be downloaded from here: Analysis | Control | Evaluation (ACE) Software. The plugins for this board can be downloaded from the plugin manager in the ACE software. The AD9172 Evaluation Board Setup Guide provides details about how to set up the hardware and software for the evaluation kit. This guide explains how to setup the KCU-105 and the ADS8 and AD9172-FMC-EBZ. This evaluation kit will also support the Analog Devices ADS7 platform for lane rate configurations that are ≤12.5Gbps. The DPGDownloader software will be used to set up the data vectors and FPGA SERDES mode configuration for the KCU-105 platform, ADS8 or ADS7 and the ACE software (Analysis | Control | Evaluation) will be used to set up the AD9172 evaluation board, including the HMC7044 clock distribution chip on the board. The AD9172-FMC-EBZ evaluation board can be driven by an external direct clock with DAC PLL off or the on-board clock from HMC7044 with DAC PLL on. The reference clock of HMC7044 can be provided by the on-board 122.88MHz crystal or the external signal generator. 评估板套件包罗: The following items should be included in the evaluation kit (KCU-105 platform not included, purchased separately by the customer): |