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TI ADS528x 8路ADC解决方案

2008-02-14 嵌入式在线收藏 | 打印

TI 公司的ADS528x是 8路高性能低功耗模数转换器（ADC），具有LVDS输出和各种可编程的特性，非常适合各种高度定制化的应用，并提供非常好的系统集成度。

ADS528x的功耗比同类产品低30%，最高取样速率65 MSPS 的每路功耗仅为77 mW。ADS528x广泛应用在无线基站，医疗设备和测试仪表中。本文介绍了ADS528x的主要性能，功能方框图和模拟输入电路模型图。

The ADS528x is a family of high-performance, low-power, octal channel analog-to-digital converters (ADCs). Available in either a 9mm × 9mm QFN package or an HTQFP-80 package, with serialized low-voltage differential signaling (LVDS) outputs and a wide variety of programmable features, the ADS528x is highly customizable for a diversity of applications and offers an unprecedented level of system integration. An application note, XAPP774 (available at www.xilinx.com) describes how to interface the serial LVDS outputs of TIs ADCs to Xilinx field-programmable gate arrays (FPGAs). The ADS528x family is specified over the industrial temperature range of -40°C to +85°C.

      主要特性：
      ·Speed and Resolution Grades:
      ·ADS5281: 12-bit, 50MSPS
      ·ADS5282: 12-bit, 65MSPS
      ·Power Dissipation:
      ·48mW/Channel at 30MSPS
      ·55mW/Channel at 40MSPS
      ·64mW/Channel at 50MSPS
      ·77mW/Channel at 65MSPS
      ·70dBFS SNR at 10MHz IF
      ·Analog Input Full-Scale Range: 2VPP
       ·Low-Frequency Noise Suppression Mode
       ·6dB Overload Recovery In One Clock
       ·External and Internal (Trimmed) Reference
       ·3.3V Analog Supply, 1.8V Digital Supply
       ·Single-Ended or Differential Clock:
       ·Clock Duty Cycle Correction Circuit (DCC)
       ·Programmable Digital Gain: 0dB to 12dB
       ·Serialized DDR LVDS Output
       ·Programmable LVDS Current Drive, Internal Termination
       ·Test Patterns for Enabling Output Capture
       ·Straight Offset Binary or Twos Complement Output
       ·Package Options:
       ·9mm × 9mm QFN-64
       · HTQFP-80 PowerPAD Compatible with ADS527x Family