ROHM has developed a car op amp without noise immunity design "BA8290xYxx-C series"

The world's leading semiconductor manufacturer ROHM for the EV / HEV engine and other core systems and automotive sensors using automotive electronic systems, has developed an overwhelming advantage EMI tolerance * 1) (hereinafter referred to as "anti-noise performance") vehicle ground operation Amplifier "BA8290xYxx-C Series" (BA82904YF-C / BA82904YFVM-C / BA82902YF-C / BA82902YFV-C).

"BA8290xYxx-C series" combines ROHM's "circuit design" "layout" "technology" three simulation technology advantages developed, compared to the general product in all frequency band output voltage variation ± 3.5% to ± 10%, this product Only ± 1% or less, is the anti-noise performance has an absolute advantage of the operational amplifier. It is no longer necessary to use noise as a countermeasure in the past, which helps to reduce the design work time and improve the reliability of the system.

This product was in September 2017 began to sell samples, plans to start in June 2018 temporarily to the scale of 1 million into mass production. The production base for the pre-process is ROHM Wako Co., Ltd. (Okayama Prefecture, Japan) and the production base for the later process is ROHM Integrated Systems (Thailand) Co., Ltd. (Thailand).

<Background>

In recent years, automotive electronics systems use ECU (Electric Control Unit) and sensors to control and optimize internal conditions such as temperature, acceleration and current to improve fuel consumption and increase safety.

On the other hand, with the electronic electronics, high density is accelerating, the noise problem is increasingly serious, has become a small signal sensor and other major problems. In addition, in the car development process, due to noise problems can not be assessed separately, only after the completion of all the noise test. However, once the assembly has occurred after the noise problem, will lead to significant design changes. So the noise design has always been extra careful.

ROHM for these noise issues, the full use of ROHM simulation design technology and unique bipolar technology and other integrated production advantages in the world without the need for anti-noise design circuit of the operational amplifier.

<Details of the details>

1. The world's first no-noise design of the car op amp

"The layout of the BA8290xYxx-C series" ROHM "circuit design (new anti-noise countermeasures circuit)" "layout experience (years of accumulated simulation layout)" "process (unique bipolar process)" three unique simulation technology development to make. Compared to the general product in all frequency band output voltage fluctuation ± 3.5% ~ ± 10%, this product is only ± 1% or less, to achieve a great advantage of anti-noise performance. The noise immunity can reduce the general product of the external anti-noise components (power, input, output of the three CR filter), which no longer need to play an important role in the system of automotive sensor applications, noise design, success Which solves the noise problem in the development of automobile electronic system, helps to reduce the design time and improve the reliability.

In addition, it is expected that the future ROHM will achieve superior anti-noise performance of the op amp technology extends to the industrial equipment market.

2. Support the global automotive industry standard

"BA8290xYxx-C series" not only supports the global automotive industry reliability standards AEC-Q100, and compared with the general product, the current consumption (compared to the general product of 0.7mA only 0.5mA) and bias voltage (compared to the general product ± 7mV ± 6mV), the product lineup uses standard op amp pin configurations and common surface mount packages and channels, simply replacing existing products with noisy hazards.

＜Product series＞

<Application example>

Apply to

■ EV / HEV inverter ■ Engine control unit ■ Automatic transmission

■ Electric power steering system ■ Car lights ■ Car air conditioning

■ Combination switch ■ EV charger ■ Car navigation system

Etc. All electronic circuits with electronic circuits that require attention to noise.

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  Author ：Brittany Antonia — WIN SOURCE ELECTRONICS

        （The author of article owns the copyright.）