LMC662CMX/NOPB – TEXAS INSTRUMENTS

The Texas Instruments LMC662CMX/NOPB is a single, low-power, precision, CMOS operational amplifier specifically designed for applications requiring ultra-low input bias current and high input impedance. It features a typical input bias current of just 2 pA and an input impedance exceeding 10¹⁴ Ω, making it ideal for high-impedance sensor interfacing and applications susceptible to input bias current errors. The device operates from a single supply voltage ranging from 2.7V to 5.5V, exhibiting excellent performance across this range. Its rail-to-rail output swing ensures maximum dynamic range. Packaged in an 8-pin SOIC (small outline integrated circuit) with a lead-free, halogen-free (NOPB) finish, the LMC662CMX/NOPB is RoHS compliant. Common applications include electrometer circuits, photodiode amplifiers, and instrumentation amplifiers where minimizing input current offsets is critical. Its low power consumption (typically <1µA) is advantageous in battery-powered systems. The LMC662CMX/NOPB’s superior performance in high-impedance scenarios makes it a strong choice over general-purpose op-amps, significantly improving accuracy and stability in sensitive measurements. Note the absence of internal frequency compensation; external compensation is required for stable operation.