AD8112 Vcc and Vee pins between pins 22-37

What should I do with these Vcc and Vee pins? They are there for the output amplifier of the AD8113. Can I leave these disconnected when I'm using the AD8112? And where is the AVcc for output 7? It's not shown in the datasheet in figure 6.

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  • 0
    •  Analog Employees 
    on Apr 18, 2017 6:32 PM

    Hi.

    Using AD8112, the AVcc pins 21, 22, 26, 30, 34, and 55 must be connected to +5V because these positive supply pins are for the inputs and switch matrix. The AVee pins 20, 24, 28, 32, 36, and 56 must be connected to -5V because these are negative supply pins for the inputs and switch matrix.

    Looking at the datasheet of AD8113, the AVcc pin of OUT07 is pin 38. This should also be the same with AD8112 for I think they use the same die. I'll confirm this and will let you know.

    To make sure that you power all the internal circuitry of the AD8112 or AD8113, connect all AVcc to the positive supply, the AVee to negative supply and the Agnd to ground.

    Thanks.

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  • 0
    •  Analog Employees 
    on Apr 18, 2017 6:32 PM

    Hi.

    Using AD8112, the AVcc pins 21, 22, 26, 30, 34, and 55 must be connected to +5V because these positive supply pins are for the inputs and switch matrix. The AVee pins 20, 24, 28, 32, 36, and 56 must be connected to -5V because these are negative supply pins for the inputs and switch matrix.

    Looking at the datasheet of AD8113, the AVcc pin of OUT07 is pin 38. This should also be the same with AD8112 for I think they use the same die. I'll confirm this and will let you know.

    To make sure that you power all the internal circuitry of the AD8112 or AD8113, connect all AVcc to the positive supply, the AVee to negative supply and the Agnd to ground.

    Thanks.

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