The OPA3S328 is a precision, low-voltage, CMOS operational amplifier (op amp) with integrated switches that are optimized for flexible transimpedance applications. Low input bias current and low input capacitance allows for high-frequency transimpedance gains at low photocurrent operation (< 1 nA). Integrated switches, low offset, and rail-to-rail output performance of the OPA3S328 allows for high accuracy across multiple decades of current values. Small packages, along with integrated switches, allow for selectable transimpedance gains and help reduce size for space-constrained applications.
The OPA3S328 operates on supplies ranging from 2.2 V to 5.5 V, and consumes a relatively low power of 3.8 mA/channel. The device provides enable-disable capability to allow for portable, hand-held applications in test and measurement. When disabled, the OPA3S328 output impedance is typically 1 GΩ, allowing for wired-OR applications using multiple transimpedance channels.