Intel® Stratix® 10 Analog to Digital Converter User Guide

ID 683612
Date 2/09/2021
Document Table of Contents

2.1. Intel® Stratix® 10 Voltage Sensor

The on-chip voltage sensor in Intel® Stratix® 10 is an 8-bit full differential ADC.

The voltage sensor monitors two external differential inputs and five internal power supplies. To read the voltage values through the SDM, use the Voltage Sensor IP core.

Figure 1.  Intel® Stratix® 10 Voltage Sensor

Figure 2.  Voltage Sensor IP Core Block Diagram

The ADC samples the voltage at regular intervals. When the Voltage Sensor IP core sends voltage sampling request to the SDM, the SDM returns the most recently read voltage value. The IP core then returns the observed voltage value as an unsigned 32-bit fixed point binary number.

The maximum value of the external analog signal (differential scale) is 1.24 V. Although the ADC supports input voltages up to 1.24 V, the Voltage Sensor IP core can monitor the internal 1.8 V VCCIO_SDM and VCCPT power supplies. A built-in voltage divider halves these voltages before the ADC measures them. The SDM then doubles the values in the ADC read outs.

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