RCV420: RCV420 4-20mA to 5-0V Conversion

Part Number: RCV420

I need to convert 4-20 mA to 0-5V.

I refer to the datasheet (FIGURE 12. 4-20mA to 5-0V Conversion)

I would like to ask about the connection of the circuit.
1.PIN3-floating?
2. Is PIN4-connected to ground or -VDD?
3. Can the PIN14 output be connected to a 20k resistor to ground?

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