3 MHz GBW, 160 µA supply — SOT-23-5 footprint
The OPA704NA/250 is a single-channel general-purpose operational amplifier from Texas Instruments, packaged in a 5-pin SOT-23-5 (SC-74A). It combines a 3 MHz gain-bandwidth product with a 3V/µs slew rate, drawing only 160 µA quiescent supply current — a balance suited to battery-powered signal conditioning where the op-amp's own draw must not dominate the power budget. The rail-to-rail output stage swings within millivolts of each supply rail, preserving dynamic range in low-voltage single-supply designs. Output drive is rated 10 mA per channel, enough to directly drive a reference input or a moderate ADC buffer without a separate line driver.
Supply span and temperature grade
The OPA704 operates from a 4 V to 12 V supply span — a 4 V minimum means it cannot run from a single lithium cell without a boost converter, but it fits comfortably on a 5 V or 12 V rail. The -40°C to +85°C temperature range covers industrial and commercial enclosures; the input bias current of 1 pA typ at 25°C doubles roughly every 10°C, staying below 100 pA at the high end, which keeps the error negligible for most sensor front-ends.
Sourcing and lifecycle
The OPA704NA/250 carries an Active lifecycle status from Texas Instruments and is RoHS3 compliant. The SOT-23-5 package is a standard footprint with broad second-source compatibility — several general-purpose op-amps share the same pinout and supply range, providing a qualification path if single-source risk must be managed.