100 kHz GBW, 0.02 V/µs slew rate — the speed budget for this CMOS op-amp
The LMC6042AIJ is a dual CMOS operational amplifier from Texas Instruments, built for ultra-low-power signal conditioning where bandwidth is secondary to battery life. Its 100 kHz gain-bandwidth product and 0.02 V/µs slew rate place it firmly in the micro-power sensor-interface class — think thermocouple amplifiers, photodiode transimpedance stages, or battery-monitor front-ends, not audio or fast-sampling paths. Each channel draws 26 µA supply current, and the 0.002 pA input bias current lets you use megohm-range feedback resistors without adding offset error. The rail-to-rail output stage preserves dynamic range when running from a single 5 V or 9 V battery.
8-CDIP hermetic package — why the ceramic body matters
This part comes in an 8-CDIP ceramic dual-in-line package, through-hole mount. The ceramic body gives better hermeticity and moisture resistance than plastic SOIC, which is why you see it specified in military, aerospace, and downhole instrumentation where humidity or thermal cycling is a concern.