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Programmable gain instrumentation amplifier circuit with four-channel single-pole single-throw switch.

Hardware design
九月 14, 2020 by Kacey 1544

ADG1611 is a four-channel single-pole single-throw switch, and AD620 is an amplifier with a resistance programmable gain. What is the reason for this kind of amplifier with four channels? Are these four resistors?

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Cassie 发表于 September 14, 2020

Used to adjust the external gain.

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Kaci 发表于 September 14, 2020

You can control these switches to control the resistance Rg, thereby controlling the external gain.

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Kacie 发表于 September 14, 2020

By combining different resistance values on different switches to change Rg to change the gain.

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