Other Parts Discussed in Thread: TINA-TI, THS3491, OPA462, OPA564, STRIKE, TLE2141M, TLE2141M-D, TLE2141
We are using this device as an output buffer in a circuit that creates a 5VAC signal at 440 Hz. The equipment it feeds into draws about 800mA from the OPA567. The op amp current limit is limited to 1.1 A in the circuit. The TI simulator software indicates that the device would have to operate at a supply voltage of +8.8 VDC to accurately create the 5VAC signal at 440 Hz. This is a single supply circuit so the other end of the supply is ground. At first we hesitated to power it at 8.8 VDC due to your data sheet's max rating of 7.5V, but we were too far into this design to start over with a different device without significant data to indicate the risks. (This situation resulted from design criteria that changed recently.) We tested our circuit with the OPA567 at 8.8 VDC and used a FLIR camera to record the temperature of the package top. It levels off at 220 degrees F. We ran it for several hours like that in an environment of 160 degrees F with no obvious impact. We do not have the Tflag pin connected to anything in the circuit. We want to best understand what you can tell us about this so we can evaluate impact of continuing.