Active quad CMOS op-amp for multi-channel signal chains
The OPA4322AIPW: It delivers 20 MHz gain-bandwidth product and 10 V/µs slew rate across four independent channels, each drawing 1.6 mA supply current — a balance of speed and power for multi-channel data acquisition or filter stages. The rail-to-rail output stage maintains signal swing within 50 mV of the supply rails, preserving dynamic range when operating from a single 3.3 V or 5 V rail.
Supply range and temperature grade for industrial BOMs
Operating from 1.8 V to 5.5 V, this op-amp spans single-cell Li-ion battery applications up to 5 V logic systems — no separate supply rail needed. Rated for -40°C to 125°C ambient, the device qualifies for automotive under-hood and factory-floor environments where temperature extremes are routine. The 14-TSSOP package (4.40 mm width) fits compact PCB layouts; the tube delivery is typical for engineering samples or low-volume production runs.
Precision input specs for sensor front-ends
Input bias current of 0.2 pA typ and input offset voltage of 500 µV max make the OPA4322AIPW suitable for high-impedance sensor interfaces, such as photodiode amplifiers or pH probe buffers, where bias current drift would otherwise dominate error. Each channel can source or sink 65 mA, enough to drive a 12-bit SAR ADC input or a long shielded cable without an external buffer.
Sourcing and lifecycle reality
Texas Instruments lists the OPA4322AIPW as Active — no NRND or EOL notice has been issued. The part is ROHS3 compliant and available through independent distribution channels. For BOM risk management, the OPA4374AIPWT is a functional peer with lower bandwidth (6.5 MHz) and slew rate (5 V/µs) but the same quad CMOS topology and pin-compatible 14-TSSOP package — qualify the alternate now if a second source is needed.