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B&B Electronics RS-485 manual Ref Input, Analog Ground, Typical Connections

Models: RS-485

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A/D Ref Input -

The voltage connected to this pin determines the low end of the input voltage range. For proper operation, this pin must be connected to a DC voltage between 0 and +2.5 Volts. Typically, this is connected to your device’s ground and analog ground (0V).

Analog Ground

This pin should be connected to your analog device’s ground. If ground (0V) is the low end of your input voltage range,

A/D Ref Input- should be connected to this pin. To minimize noise, do not connect analog ground and digital ground together. Connect unused A/D inputs to analog ground.

Typical Connections

Figure 2.1 shows the typical connections of the 485SDA10 for a 0 to 5V DC input range.

Figure 2.1 - Typical 0-5V A/D Connection

485SDA103798 Manual

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B&B Electronics RS-485 manual Ref Input, Analog Ground, Typical Connections
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RS-485 specifications

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