OPA333 , OPA2333. SBOS351E MARCH 2006 REVISED DECEMBER 2015. OPAx333 1.8-V, microPower, CMOS Operational Amplifiers, Zero-Drift Series. The EMIRR IN+ of the OPA333 is plotted versus frequency as shown in Figure 1. If available, any dual and quad op amp device versions have nearly similar They are optimized for low-voltage, single-supply operation. The OPA333 family offers excellent CMRR without. TRANSDUCER APPLICATIONS the crossover. ABSTRACT. This application report introduces the concept of electromagnetic interference rejection ratio (EMIRR IN+) as a measure of the immunity of an OPA333 . +2.5V. 2.5V. NEGATIVE OVER VOLTAGE RECOVERY. 2. V. /d iv. 0. 1 . V. /d iv 0. Time (50 s/div). Input. Output. 10k . 1k . OPA333 . +2.5V. 2.5V.