Original question:
DRV8316: DRV8316 Ioffset_Current sense offset low side current in of CSA
Tool/software:
Hello ,
DRV8316 datasheet states that SOA,SOB,SOC pin integrate current sense amplifier .What is the output impedance and output current of the SOX pin? ADC input range is 1V,and Is it possible to add external voltage divider resistors to adapt the voltage input range of the ADC?
Is there a more detailed internal block diagram of the I/V converter?
Hi Chuang,
I am looking into the requested information and aim to provide a more thorough response by next week. In the meantime, could you provide additional information on requirements for your system, such as what levels you are looking for from the output impedance and current and how they affect your system?
Please refer to the following diagram of the output voltage as a function of the sensed current. The output range is based on VREF, but you can use a voltage divider from SOx to fit the output into the range of the ADC. We also typically recommend putting an RC lowpass filter on SOx to mitigate high frequency noise.
Best,
Davis
Hi Davis,
ADC input impedance 3000 ohms, refer to Xilinx UG580 Page 37, XADC input impedance.
Hi Davis,
Can you confirm whether the following resistor divider network can be used?
