Dual-channel precision op-amp for signal-conditioning chains
The OPA2328DGKR is a dual-channel CMOS operational amplifier from the OPAx328 series, offering a 40 MHz gain-bandwidth product and a 30 V/µs slew rate — enough bandwidth to handle fast sensor outputs or ADC driver stages without slew-rate limiting at moderate gains. Input offset voltage is trimmed to 3 µV typical, and input bias current sits at 0.2 pA, so the DC error budget stays tight even with high-impedance sources like photodiodes or pH probes. Rail-to-rail output swing lets it drive the full input range of a 2.2 V to 5.5 V supply ADC without a second gain stage — useful in single-supply, low-voltage sensor interfaces.
Package, temperature grade, and supply fit
Housed in an 8-VSSOP (3.00 mm width MSOP) package, the OPA2328DGKR is a surface-mount part suited for compact mixed-signal PCBs where board space is tight. Rated for -40°C to 125°C ambient, it covers industrial and automotive under-hood temperature ranges without derating the supply current of 3.8 mA per channel. Supply span from 2.2 V to 5.5 V means it runs on a single 3.3 V or 5 V rail, or a 2.5 V reference — no dual supplies needed.
Lifecycle and compliance status
Texas Instruments lists the OPA2328DGKR as Active in production, with ROHS3 compliance — no end-of-life notice or last-time-buy window is currently in effect. The part carries the OPAx328 series designation, and no official successor has been issued; it remains the current-design-in choice for this dual CMOS amplifier family.