Appendix C
TL072 Operational Amplifier

The Texas Instruments TL072 dual operational amplifier (“op amp”) provides two op amp devices in a single 8-pin package. For more details see the datasheet available at http://www.ti.com; enter “tl072” in the “Search by Part Number” field.

Figure C.1 shows the pinout diagram for the TL072. Note the requirement for a dual power supply; the NI myDAQ ±15 V supply serves this purpose. Also note that the op amp device itself does not have a ground terminal. Instead the myDAQ AGND (analog ground) establishes the ground reference.

Figure C.2 shows the TL072 placed on the standard breadboard layout described in Figure B.3 in Appendix B, connected to power, and ready for additional circuitry.

NI Multisim provides a circuit model for the TL072: place the TL072ACP device.

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Figure C.1: Texas Instruments TL072 dual op amp pinout diagram (top view). The plastic package uses either a U-shaped cutout to indicate the left side or an indented circle to indicate pin 1.

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Figure C.2: Texas Instruments TL072 dual op amp placed on the standard breadboard layout, connected to power, and ready for additional circuitry.