What the 175 kHz gain bandwidth means for your signal chain
The LT1635CS8#PBF is a single-supply, general-purpose operational amplifier from Analog Devices' LT® series, built for circuits where the signal frequency stays below the 175 kHz gain-bandwidth product. That bandwidth ceiling means the op amp's closed-loop gain times the input frequency cannot exceed 175 kHz without the open-loop gain rolling off — for a gain of 10, the usable signal bandwidth is roughly 17.5 kHz, which suits sensor conditioning, active filters, and low-frequency control loops. The 0.05 V/µs slew rate sets how fast the output can swing under a step input: at a 5 V output swing, the rise time is about 100 µs, so the part is not intended for fast pulse or audio line-driver duty. Pair it with the rail-to-rail output, which lets the output swing to within millivolts of either supply rail — useful when the ADC reference or comparator threshold sits near the supply limit.
Supply budget and temperature grade for the BOM
The LT1635CS8#PBF draws 135 µA quiescent supply current and operates from a single supply spanning 1.2 V to 10 V. That sub-150 µA current makes it a fit for battery-powered sensor nodes or portable instruments where every microamp counts. The 40 mA output current per channel is enough to drive a reference input or a small relay coil through a transistor, but not a speaker or motor. Temperature grade is commercial: 0°C to 70°C. This limits deployment to indoor, climate-controlled environments — not suitable for automotive under-hood or outdoor telecom cabinets without active thermal management. The input offset voltage is 300 µV and input bias current is 2 nA, both typical for a general-purpose bipolar op amp at this price point.
Package, compliance, and sourcing posture
Housed in an 8-SOIC package with a 3.90 mm body width, the LT1635CS8#PBF mounts on standard surface-mount footprints and is supplied in tube packaging. The supplier device package is 8-SO — the same footprint as the industry-standard SOIC-8. RoHS3 compliant, so it passes the EU material restriction requirements without a waiver. Production status is active, meaning the manufacturer continues to fabricate and ship this order code.