Appendix D
DG413 Quad Analog Switch

The Intersil DG413 provides four analog switches; refer to Figure D.1 for the pinout diagram. Each switch is bidirectional and operates just like a physical SPDT switch but under the control of a digital (two-level) control signal. Two of the switches are normally-open and the other two switches are normally-closed. For more details see the datasheet available at http://www.intersil.com; enter “dg413” in the search box.

When connected and powered as shown in Figure D.2 the switches operate as expected over the full ±15 V range under the control of the myDAQ digital outputs DIO0 to DIO7. The analog outputs AO0 and AO1 may also serve as control signals provided they produce a voltage of either 0 V (inactive switch state) or 5 V (active switch state).

NI Multisim provides a circuit model for the DG413: place the ADG413BN device.

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Figure D.1: Intersil DG413 quad analog switch pinout diagram (top view).Two of the switches are normally-open and the other two switches are normally-closed. The switch positions indicate the normal (inactive) state with the switch control voltage at low level. Switches 1 and 4 are normally-open (NO) and Switches 2 and 3 are normally-closed (NC).

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Figure D.2: Intersil DG413 quad analog switch placed on the standard breadboard layout, connected to power, and ready for additional circuitry.