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ROHM Semiconductor
EMARMOUR Technology

EMARMOUR Technology

Product catalog summary

Introduction
Operational amplifiers (op amps) have evolved significantly over the past 60 years, transitioning from vacuum tubes to integrated circuits (ICs). They are fundamental in analog circuits, used for amplification and feedback, and can be configured for various filters and arithmetic circuits. Despite their simplicity in design, op amps can exhibit unexpected behavior due to noise and parasitic capacitance.

Challenges and Parameters
Designers face challenges with op amps, including managing input offset voltage, output range, output error, external noise, external stress, and thermal effects. These parameters often require trial and error to optimize.

EMARMOUR™ Technology
ROHM's EMARMOUR™ technology offers breakthrough noise immunity, significantly reducing the noise design load. This technology ensures stable operation across all noise frequency bands, achieving less than ±20mV deviation, which is a tenth of conventional standards.

Nano Cap™ Technology
The Nano Cap™ technology complements EMARMOUR™ by providing ultra-stable control, preventing oscillation even with high-speed operations and large load capacitances. This technology minimizes wiring resistance and parasitic capacitance, enhancing response performance.

Product Lineup
ROHM offers a range of products featuring EMARMOUR™ and Nano Cap™ technologies, including:

BD77501G, BD77502FVM, BD77504FV: High-speed CMOS op amps with high EMI immunity and stable output.
BA82904YF-C, BA82902YF-C: Universal op amps with bipolar structure.
BA83472YFVM-C: Universal comparators with high-speed operation.

Conclusion
ROHM's EMARMOUR™ and Nano Cap™ technologies provide industry-leading noise immunity and stability for op amps and comparators, making them suitable for high-reliability applications such as IoT sensors and vehicle safety systems.

Catalog excerpts

I n d u s t r y - L e a d i n g* E M I I m m u n i t y Op Amps / Comparators *RO ROHM Sept ptember 2020 study p

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Unprecedented Noise Tolerance EMARMOUR™ High EMI Immunity Op Amps / Comparators One of the most basic analog circuits, op amps have evolved over Achieves ultra-high noise immunity by leveraging analog technology covering circuit design, layout, and processes the past 60 years from vacuum tubes to ICs. A number of technical materials are available, and the basic structures for ampliﬁcation and feedback can be used to conﬁgure various Circuit equipped with EMI ﬁlter ﬁlters and arithmetic/ampliﬁcation circuits. Another feature is that design and simulation can be performed on a desktop based on...

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Nano Cap™ Novel Op Amps The newly developed EMARMOUR™ + Nano Cap™ op amps leverage EMARMOUR™ and Nano Cap™ technologies that provide the industry's best immunity against external noise to achieve high-speed operation while ensuring stable operation for all output load capacitances. In addition to fast operation, op amp performance was optimized utilizing desktop software. Noise tolerance characteristics EMARMOUR™ Technology Stable operation even with nF load capacitance Nano Cap™ Technology *ROHM September 2020 study Nano Cap™ Technology Ultra-stable control technology leveraging analog circuit...

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EMARMOUR™ + Nano CapTM High-Speed CMOS Op Amp Lineup Breakthrough Noise Immunity [EMARMOUR™ series] Op Amps/Comparators BD77501G SS0P5 package BD77502FVMMSOP8 package BD77504FVSSOP-B14 package For more details, please visit ROHM’s website *Nano CapTM and EMARMOUR™ registered trademarks of ROHM Co., Ltd. The content specified herein is for the purpose of introducing ROHM’s products (hereinafter “Products”). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Great care was taken in ensuring the accuracy of the information...

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