The LMC6001 is a low-power, ultra-low input current operational amplifier from National Semiconductor. Its input current is 25 fA, and its input current noise is 0.13 fA/√Hz. It is suitable for electrometer applications such as long interval integrators, ultra-high input impedance instrumentation amplifiers, and sensitive electrical-field measurement circuits.
The LMC6001 is an ultra‑low input current operational amplifier featuring a 25 fA maximum input current, low power consumption (750 pA), and ESD protection of 2000 V. It is designed for electrometer, photodiode pre‑amplifier, and other high‑impedance sensor applications, offering rail‑to‑rail output swing and low input‑referred noise (22 nV/√Hz at 1 kHz).\n\nThe handbook includes absolute maximum ratings, DC and AC electrical characteristics, typical performance curves, package dimensions, and application hints such as handling large feedback resistors and capacitive loads. Ordering information for 8‑pin DIP, metal‑can, and molded packages is also provided, along with life‑support policy notes.
| Input current (100% tested) | 25 fA |
|---|---|
| Input current over temperature | 2 pA |
| Low power consumption | 750 pA |
| Input offset voltage (Vos) | 350 pV |
| Input‑referred voltage noise | 22 nV/√Hz at 1 kHz |
| Supply voltage range | -0.3 V to +16 V |
| ESD tolerance | 2000 V |
| Operating temperature range | -40 °C to +85 °C |
The LMC6001 has a maximum input current of 25 fA (100 % tested).
It operates from –40 °C to +85 °C.
The device provides ESD protection up to 2000 V.