The LMV83x Series of operational amplifiers from National Semiconductor has integrated EMI filters that maintain the accuracy of analog systems by reducing the effects of RF (radio frequency) interference. They are reported to have an EMI rejection ratio (EMIRR) of 120 dB. The LMV831 single, the LMV832 dual, and the LMV834 quad op amps feature CMOS inputs, a maximum inset voltage of 1 mV, a rail-to-rail output stage, and an input common mode voltage range that includes ground. These devices provide a common mode rejection ratio (CMRR) and a power supply rejection ratio (PSRR) of 93 dB. The devices maintain stability for capacitive loads as large as 200 pF and offer a temperature range of -40 to +125 degrees C. Other product features include a 3-MHz unity gain bandwidth, “PowerWise” operation using 240 µA of supply current, and reduced board size and development time by eliminating the need for metal shielding or additional filters. Find more product information at the National Semiconductorwebsite.