Dual CMOS op-amp for battery-powered signal chains
The OPA2337UA/2K5 is a dual CMOS operational amplifier from the MicroAmplifier™ series, offering a 3 MHz gain-bandwidth product and a 1.2 V/µs slew rate. It delivers rail-to-rail output swing, making it a fit for single-supply, low-voltage applications where the output must reach the supply rails. Operating from a supply span of 2.7 V to 5.5 V and drawing 525 µA per channel (both channels), it suits battery-operated instrumentation, portable medical gear, and sensor conditioning circuits where power budget is tight.
Signal-chain performance at the bench
Input bias current is 0.2 pA typical — negligible for high-impedance sources like photodiodes or pH probes. The 500 µV input offset voltage (max) is moderate; for precision DC applications below 1 mV, an auto-zero or chopper-stabilized amplifier would be a tighter fit. Output current capability is 9 mA per channel, enough to drive a 2 kΩ load to within 100 mV of the rails. The rail-to-rail output stage means no headroom loss at low supply voltages — a 3 V rail still swings close to 2.95 V on the high side. Temperature range is -40°C to 85°C, covering industrial environments. The CMOS input stage keeps the bias current stable across temperature — no exponential rise like a bipolar front-end.
Package, footprint, and supply posture
Housed in an 8-SOIC package (3.90 mm width), the OPA2337UA/2K5 is a standard surface-mount footprint that reflows on a standard JEDEC profile. The supplier device package is listed as 8-SOIC — the same as the package/case field, so no confusion on the PCB land pattern. Available in Tape & Reel (TR) and Cut Tape (CT) options.