35 kHz GBW — what the bandwidth means for your signal chain
The OPA241PA is a single-circuit, general-purpose operational amplifier from Texas Instruments with a gain-bandwidth product of 35 kHz and a slew rate of 0.01 V/µs. This bandwidth suits low-frequency signal conditioning — think thermocouple amplifiers, strain-gauge bridges, or battery-monitoring circuits where the signal changes slowly and noise rejection matters more than speed. The 0.01 V/µs slew rate means the output takes about 100 µs to swing 1 V. For a 10 Hz sine wave at 1 V amplitude, the required slew rate is roughly 0.06 V/µs — this part cannot track that waveform without distortion. Stay below a few hundred hertz for clean amplification.
27 µA supply — a fit for always-on and battery-backed boards
Quiescent current is 27 µA typical, with a supply span from 2.7 V to 36 V single supply (or ±1.35 V to ±18 V dual). This wide compliance lets the same op-amp run from a 3 V lithium coin cell or a 24 V industrial rail without a separate regulator. Input offset voltage is 100 µV max, and input bias current is 4 nA typical. For a 10 kΩ source impedance, the offset from bias current is under 40 µV — negligible in most precision loops, but worth checking if the source impedance climbs above 100 kΩ. Rail-to-rail output swing means the output can reach within a few millivolts of the supply rails when lightly loaded. With 21 mA output drive capability, it can directly drive a 600 Ω load or a small relay coil through a transistor.
Through-hole 8-DIP — board-level integration note
The OPA241PA comes in an 8-pin DIP package (0.300-inch body width, 7.62 mm pitch) with through-hole mounting. The 8-PDIP footprint is standard — it drops into a DIP-8 socket or solders directly into plated through-holes on a 0.100-inch grid protoboard. Shipping in tube format, not tape-and-reel. For a hand-assembly or low-volume production run, tube delivery is fine; for automated insertion, verify the tube-to-feeder interface or plan a manual kitting step.
Industrial temperature range and lifecycle
Rated for -40°C to +85°C operating temperature, this covers most industrial and commercial environments — factory-floor sensor interfaces, HVAC controllers, and outdoor telecom cabinets that see seasonal extremes. Product status is Active, and the part is ROHS3 compliant.