Texas Instruments OPA3S2859 Programmable Gain TIAs

The TI OPA3S2859 offers three internal switched feedback paths and an optional parallel non-switched feedback path that facilitates up to four selectable gain configurations. The internal switches minimize parasitic contributions to boost performance compared to systems that use discrete external switches. Each switch is optimized for feedback resistor values from <1kΩ to >100kΩ for wide dynamic range applications. The designated switch path is controlled for both channels using a 2-wire parallel interface. For each channel set, the gain path can also be held constant by exerting the latch pin, which turns off the switch control for the selected channel and prevents the channel from changing gain. The OPA3S2859-EP devices have gold bond wires, a temperature range of –55 to +105°C, and an SnPb lead finish.