8-SOIC dual op amp for general-purpose signal conditioning
The Texas Instruments LM258ADR is a dual general-purpose operational amplifier in an 8-SOIC package — the 0.154-inch-wide body common on two-stage signal chains where board space is tight but a quad amp would waste channels. Rated for a 3 V to 32 V supply span, it runs from a single 5 V rail or split ±15 V supplies without a regulator change, suiting industrial sensor interfaces and control-loop buffers that share a backplane rail.
700 kHz GBW and 0.3 V/µs slew rate — what they mean for your loop
The 700 kHz gain-bandwidth product sets the usable closed-loop bandwidth: at a gain of 10, the -3 dB point sits near 70 kHz, enough for most 4-20 mA transmitter loops, thermocouple amplifiers, and low-speed active filters where the signal of interest is below 10 kHz. The 0.3 V/µs slew rate limits the large-signal response — a 10 V peak-to-peak output step slews in about 33 µs, which means the amplifier cannot track fast edges above roughly 4.8 kHz at full swing. For audio-frequency or PWM-filter stages, the TLV9351IDCKR (20 V/µs) is a faster alternative. Input bias current is 15 nA typical — high enough that a 100 kΩ source resistor drops 1.5 mV across it, so the offset error from bias current is comparable to the 2 mV input offset voltage. For high-impedance sources above 50 kΩ, a FET-input op amp like the TLV9362IDDFR (10 pA bias) would reduce the error.
Supply current and output drive — 500 µA per channel, 40 mA output
Each amplifier draws 500 µA quiescent supply current, so the dual-channel LM258ADR consumes 1 mA total from the rail — low enough for battery-powered field transmitters but not as aggressive as micropower amplifiers that trade GBW for current. The output can source or sink 40 mA per channel, enough to drive a typical 0-10 V ADC input or a small relay coil through a series resistor, but not intended for heavy loads like a motor winding or solenoid.
Temperature grade and supply range — industrial, not automotive
Rated for -25°C to +85°C ambient, the LM258ADR covers most indoor industrial and commercial equipment but does not meet the -40°C cold crank or +125°C under-hood requirement — an AEC-Q100 qualified part would be needed for automotive or engine-bay deployment. The 3 V minimum supply means it runs from a single lithium cell or a 3.3 V logic rail, while the 32 V maximum covers 24 V industrial supplies with margin for transients up to the abs-max rating (36 V per the family datasheet).
Active production, ROHS3 — no end-of-life concern
Supplied in Tape & Reel (TR) or Cut Tape (CT) for 8-SOIC pick-and-place assembly; the reel quantity is the standard 2,500 pieces per reel for this package.