1.4 µA supply — always-on sensor front-end fit
The LT1494IS8#PBF draws 1.4 µA typical supply current — low enough to leave on continuously in a battery-powered node without draining the cell between measurement intervals. This is the headline figure that decides the part's fit: a 3.6 V lithium cell driving the op-amp 24/7 consumes roughly 5 µW in the amplifier alone, which is negligible for a year-long deployment on a CR2032. Supply span runs from 2.2 V minimum to 36 V maximum — one lithium cell at end-of-discharge (2.5 V) still gives headroom, and a 24 V industrial rail is within the upper end without an external regulator. The single-channel (1-circuit) package means one op-amp per 8-SOIC footprint; a multi-channel design uses multiple devices.
2.7 kHz GBP — bandwidth budget for DC and low-frequency signals
Gain-bandwidth product is 2.7 kHz. For a gain-of-10 stage, the closed-loop bandwidth is about 270 Hz — fine for thermocouple conditioning, strain-gauge amplification, or battery-voltage monitoring, but not for audio or switching-frequency loops. The slew rate of 0.001 V/µs sets the large-signal response: a 1 V step at the output takes roughly 1 ms to settle, which is acceptable for DC measurement but rules out pulse-width-modulated signals or fast transients. Input offset voltage is 200 µV typical — this is the DC error at the output for a unity-gain buffer. For a 10× gain stage, the output offset is 2 mV, which is within the noise floor of a 10-bit ADC on a 2.5 V reference but matters if the signal itself is in the microvolt range. Input bias current is 25 pA typical; a 1 MΩ source resistor drops 25 µV across the bias current — negligible unless the source impedance exceeds 10 MΩ. Output type is rail-to-rail — the output swings within a few millivolts of each supply rail at light load. At the rated 1.5 mA output current per channel, the rail-to-rail swing holds within about 100 mV of the rails, which preserves dynamic range in single-supply designs where the signal spans nearly the full supply range.
Active, ROHS3, industrial temperature grade
Operating temperature range is -40°C to 85°C — the industrial grade covers outdoor enclosures, engine-bay-adjacent electronics, and unconditioned factory-floor panels. The 8-SOIC package (3.90 mm width) is a standard surface-mount footprint; the supplier device package is 8-SO. The tube packaging is the factory-shipping format — for reel quantities, confirm the tape-and-reel suffix with the distributor.