The OPA2991IDR operational amplifier from Texas Instruments is a dual, 40-V, 4.5-MHz, rail-to-rail input/output, low-offset-voltage, low-noise op amp. This op amp has an 8-pin SOIC package and operates in a temperature range of -40 to 125°C. It features high accuracy, excellent non-linearity, fast settling time and low power consumption. It is ideal for a variety of applications, including low-vibration transducer signal processing, low-noise programmable gain amplifiers, current loop sensing, medical instrumentation and microphone pre-amplification. The OPA2991IDR also features an input common-mode voltage extended to ground, which eliminates the need for the input coupling capacitor eliminating phase shift and saving space in the design.