TI 公司的ADS528x是 8路高性能低功耗模數(shù)轉(zhuǎn)換器(ADC),具有LVDS輸出和各種可編程的特性,非常適合各種高度定制化的應用,并提供非常好的系統(tǒng)集成度。
ADS528x的功耗比同類產(chǎn)品低30%,最高取樣速率65 MSPS 的每路功耗僅為77 mW。ADS528x廣泛應用在無線基站,醫(yī)療設備和測試儀表中。本文介紹了ADS528x的主要性能,功能方框圖和模擬輸入電路模型圖。
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
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
應用:
·Medical Imaging
·Wireless Base-Station Infrastructure
·Test and Measurement Instrumentation
圖1 ADS528x 功能方框圖
圖2 ADS528x 模擬輸入電路模型
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