We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 47590

Zynq-7000 AP SoC, XADC - On-Chip Voltage References for ADCs are not accurate


The on-chipvoltage reference for the ADCis not trimmed. This leads toinaccuratevoltage and temperature measurements. The external voltage references can be used for accurate measurements. Refer to the XADC Pinout Requirements figure in UG480, 7 Series FPGAs XADC Dual 12-Bit 1MSPS Analog-to-Digital Converter User Guide. Refer to (Xilinx Answer 44971) for additional information.


Impact: Major.

Work-around: Use an external reference for the XADC.

Configurations Affected: Systems that use XADC.

Device Revision(s) Affected: Refer to (Xilinx Answer 47916) - Zynq-7000 Design Advisory Master Answer Record.

Nov 26, 2012. AR Revision: clarified that it is the on-chip voltage reference for the ADC that is not supported, not the on-chip temperature and voltage sensors.



Answer Number 问答标题 问题版本 已解决问题的版本
52539 Zynq-7000 AP SoC - Board Design N/A N/A
AR# 47590
日期 12/05/2012
状态 Active
Type 设计咨询
  • Zynq-7000