ROHM BD77501G high-speed op-amp
Output voltage fluctuation range ±20mV or less
No load capacity or external noise influence


Anomaly detection systems require operational amplifiers (OP Amp) that amplify minute signals from sensors and other devices at high speed.

High-speed type OP Amp is prone to oscillation due to load capacity of wiring, etc., and there is a problem that the burden on board design is large due to the worsening noise environment caused by the acceleration of electronicization and high-density of applications.

ROHM announced on the 21st that it has developed the EMARMOUR™ 'BD77501G' high-speed operational amplifier.

The BD77501G utilizes ROHM's Nano Cap™ power IC technology to support high-speed amplification (high slew rate 10 V/µs) required in anomaly detection systems and other applications, while not oscillating due to load capacitance such as wiring.

The output voltage fluctuation range is less than ±20mV in all noise frequency bands, so when installed at the rear of a sensor, etc., signal amplification is possible at high speed without being affected by load capacity and external noise.

Therefore, external noise countermeasure components such as CR filters can be excluded when designing the board.

The BD77501G has been shipping samples at 500 yen per unit since March of this year, and mass production will begin in October with a monthly production capacity of 1 million units.I plan to do it.

ROHM plans to include this product in its lineup for automotive use in the future.