The ROHM TLR342FJ-GE2 is a dual CMOS operational amplifier with a rail-to-rail output stage, designed for single-supply operation from 1.8 V up to 5.5 V. The 2.3 MHz gain-bandwidth product and 1.2 V/µs slew rate suit it for sensor signal conditioning, audio line-level buffering, and general-purpose filter stages where bandwidth stays under a few hundred kilohertz.
150 µA supply current — low-power continuous operation
Each amplifier draws 150 µA of supply current, making the dual package consume 300 µA total quiescent. That keeps the thermal budget low in a tightly packed 8-SOP-J board and extends battery run time in portable instruments. The 120 mA per-channel output capability still drives moderate loads — headphone drivers, ADC reference buffers, or relay coils — without needing a separate buffer stage.
1 pA input bias — high-impedance sensor interface
The CMOS input stage holds input bias current at 1 pA typical, so the part does not load high-impedance sources like photodiode transimpedance stages, pH probe buffers, or precision voltage dividers. The 300 mV input offset voltage is a room-temperature typical; for a precision DC application you would budget an auto-zero or chopper-stabilized part instead, but for AC-coupled or ratiometric signals this offset is acceptable.