Quad CMOS op-amp in a through-hole DIP — what you're getting
The LMC660CN/NOPB: Gain-bandwidth product is 1.4 MHz and slew rate is 1.1 V/µs. Supply range spans 4.75 V to 15.5 V.
0.002 pA input bias — why it matters for your front end
The 0.002 pA typical input bias current is the part's strongest differentiator. For a transimpedance amplifier with a 10 MΩ feedback resistor, that bias contributes just 20 nV of offset error — negligible compared to the op-amp's own 1 mV input offset. It means you can use high-value feedback resistors without the bias current creating a voltage drop that looks like a signal. The CMOS input stage also keeps input impedance extremely high, so the LMC660CN/NOPB won't load down a piezoelectric sensor or a high-impedance electrode.
Supply rails and output swing — single-supply reality check
Supply range is 4.75 V to 15.5 V single supply. Output is rail-to-rail.