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LMR1802G-LB Low-Noise CMOS Op Amp

LMR1802G-LB Low-Noise CMOS Op Amp

ROHM's low-noise CMOS op amp provides excellent performance against external noise and is optimized for consumer devices and industrial equipment

Image of ROHM's LMR1802G-LB Low-Noise CMOS Op AmpROHM's LMR1802G-LB CMOS op amp features the lowest noise currently in the industry, optimized for industrial applications requiring high-accuracy sensing, such as accelerometers used in sonar systems and optical sensors that handle ultra-small signals.

In addition to IoT devices, sensors are being adopted in a variety of applications from portables and vehicle systems to industrial equipment to improve functionality and provide advanced control. Used to detect and convert various environmental and physical changes into signals, sensors demand high-accuracy, but at the same time, peripheral sensor circuitry is trending towards lower voltages to achieve greater power savings.

Op amps are configured at the rear stage to amplify the analog sensor output, but because sensor signals are so weak, it is necessary to implement noise countermeasures to ensure high-accuracy transmission. In response, ROHM developed a high-noise tolerant op amp for the automotive market utilizing a vertically integrated production system that leverages original analog design technologies and processes. ROHM op amp delivers the industry’s best performance against external noise optimized for consumer devices and industrial equipment.

The LMR1802G-LB utilizes ROHM’s analog technology covering circuit design, processes, and layout, that reduces input-equivalent noise voltage density by half (2.9 nV/√Hz at 1 kHz, 7.8 nV/√Hz at 10 Hz) compared to conventional products, significantly improving the detection performance of sensor signals. In addition, superior phase margin (68°) and capacitive load tolerance (500 pF) provide excellent stability (difficult to oscillate, easy to handle). This enables accurate amplification of voltages in the order of µV, ensuring support for industrial and consumer applications requiring high-precision sensing.

  • Easy-to-use despite low-noise results


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