New op-amps series achieves breakthrough noise immunity and reliability

ROHM has developed the BD8758xY series of rail-to-rail input/output high-speed CMOS op-amps. The devices offer increased EMI immunity for automotive and industrial equipment applications needing high-speed sensing in harsh environments, such as vehicle ECUs and anomaly detection systems for factory automation equipment.

The company has released the EMARMOUR series for the automotive and industrial markets due to their superior noise immunity that lessens design resources by linking a vertically integrated production system with proprietary analog design technology.

The series is intended to stop malfunctions due to noise with no need to take special application measures. The latest series, in particular, has shown superior performance under four international noise evaluation tests. For example, in ISO 11452-2 radio wave emission testing conducted by vehicle manufacturers, the output voltage of standard products fluctuates by more than ±300mV in all frequency bands. At the same time, the new series delivers ±10mV or less. At the same time, the CMOS element structure facilitates accurate, high-speed signal amplification – without being affected by external noise when installed inside the targeted sensor applications. This notably increases reliability while decreasing design production hours in many applications, including anomaly detection systems.

Also, ROHM Real Model, a new high accuracy SPICE model that matches the electrical and temperature characteristics of the actual IC and simulation values to stop rework after prototyping, is available on its website.

Application examples include EV/HEV inverters, engine control units, eCall (vehicle emergency call system), car navigation/air conditioning systems; Industrial factory automation equipment, measurement equipment, measuring instruments, servo systems, and sensor systems; and other automotive/industrial applications sensitive to noise.