Quad CMOS op-amp for low-power signal chains
It delivers a 1 MHz gain-bandwidth product with a 0.5 V/µs slew rate, drawing just 45 µA total supply current across all four channels.
At 45 µA for all four amplifiers, each channel consumes roughly 11.25 µA. This micropower profile suits always-on monitoring loops, portable medical devices, and remote sensor nodes where every microamp extends battery life. The 10 mA output drive per channel is enough to swing into a typical ADC input or drive a modest load, but not a headphone or relay coil.
Supply range and single-supply operation
The rail-to-rail output stage lets the signal swing close to the supply rails, preserving dynamic range in low-voltage systems. Input common-mode range extends to the negative rail but stops about 1 V below the positive rail — a typical CMOS limitation that matters for high-side current sensing at 3.3 V.
Expect this part in factory automation I/O modules, engine bay sensor conditioners, and outdoor telecom line cards where the ambient temperature swings wide.
Housed in a 14-TSSOP (4.40 mm width, 0.173" pitch), the OPA4348AIPWT is a surface-mount device. The fine-pitch leads require careful PCB layout — 0.65 mm pitch typical for TSSOP — and a stencil designed for the 0.25 mm lead width.