Nanopower op-amp for always-on sense channels
The LT6003CS5#TRMPBF is a single-channel general-purpose op-amp from Analog Devices, built for applications where supply current is the binding constraint. Its 1.25 µA quiescent current means it can run continuously on a coin cell for years without dominating the battery budget — think smoke detectors, wearable sensor front-ends, or IoT threshold monitors that wake on an interrupt. The 3 kHz gain-bandwidth product sets the usable signal bandwidth at roughly 300 Hz for a gain of 10 — adequate for DC-level sensing, temperature monitoring, or low-frequency vibration pickups, but not for audio or control loops that need kHz-scale settling. The 0.0013 V/µs slew rate reinforces this: large-signal steps take milliseconds to slew, so the part is best suited to slow-moving analog signals where noise filtering matters more than transient response. Rail-to-rail output swings to within a few millivolts of the supply rails, preserving dynamic range in low-voltage systems.
TSOT-23-5 board-fit and sourcing posture
Housed in a 5-lead TSOT-23-5 package, the footprint matches the standard nanopower op-amp layout shared by parts like the AD8603. The 0.65 mm pitch and 2.9 × 1.6 mm body fit easily on two-layer boards; no special fan-out vias are needed for the single-channel layout.