Voltage Sensor Pins
Pin Name | Pin Functions | Pin Description | Connection Guidelines |
---|---|---|---|
VREFP_ADC | Input | Dedicated precision analog voltage reference. | Tie VREFP_ADC to an external 1.25V accurate reference source (+/- 0.2%) for better ADC performance. Treat VREFP_ADC as an analog signal that together with the VREFN_ADC signal provides a differential 1.25V voltage. If no external reference is supplied, always connect VREFP_ADC to GND. An on-chip reference source (+/-10%) is activated by connecting this pin to GND. VREFP_ADC must be equal to or lower than VCCA_PLL to prevent damage. |
VREFN_ADC | Input | Tie VREFN_ADC to the GND pin of an external 1.25V accurate reference source (+/- 0.2%) for better ADC performance. Treat VREFN_ADC as an analog signal that together with the VREFP_ADC signal provides a differential 1.25V voltage. If no external reference is supplied, always connect VREFN_ADC to GND. |
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VSIGP_[0,1] | Input | 2 pairs of analog differential inputs pins used with the voltage sensor inside the FPGA to monitor external analog voltages. | Tie these pins to GND of the voltage sensor feature if not used. For details on the usage of these pins, refer to the Power Management in Intel® Cyclone® 10 GX Devices chapter. Do not drive VSIGP and VSIGN pins until the VCCA_PLL power rail has reached 1.62V to prevent damage. |
VSIGN_[0,1] | Input |
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