SBOSA11A March 2020 – March 2021 OPA2206
The OPA2206 is the industry's first e-trim operational amplifier built on a bipolar process. The input offset voltage of an amplifier is determined by the inherent mismatch between the input transistors. The offset can be minimized using laser-trimming performed during the manufacturing process while the device is still in the bare silicon form. However, when the silicon is packaged, the packaging process introduces additional offset due to mechanic stresses. TI's new trimming processes are used to trim the offset after the packaging process is complete to minimize both inherent and package-induced offsets. After trimming, communication is disabled to make sure the amplifier operates properly in the final system.
The OPA2206 is also trimmed at two temperatures to minimize the input offset voltage drift over temperature. The final performance of the offset drift can be seen in Figure 8-5.