The AD8331 datasheet shows examples with the RCLMP resistor present and the RCLMP pin bypassed with a capacitor. If I am leaving RCLMP open (i.e. no resistor present) do I still need the bypass capacitor?
Thanks in advance.
The purpose of that resistor connected between the RCLMP to ground is to adjust the limit of the output voltage swing. RCLMP pin actually has an internal voltage source and internal resistor to set the voltage at particular node. Putting an additional resistor to ground just forms a voltage divider which affects and adjust the limit of the output voltage swing of the part. So whether you put a resistor to ground or left the RCLMP pin open, it is always advisable to put a bypass capacitor on it.
I hope this helps!
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