Catalog excerpts
ROHM Op Amps: Pursuing a Completely Noiseless Design
Open the catalog to page 1Revolutionary noise design achieves refined operation featuring greater accuracy 2 Op Amps that pave the way to the sensing technology of tomorrow The importance of sensors continues to grow in the automotive and industrial equipment fields. Op Amps are essential for amplifying weak sensor signals, and achieving more accurate operation requires that the Op Amp itself have high immunity against EMI (electromagnetic interference) from external sources, and the Op Amp itself must not emit noise. ROHM has developed two op amps that provide industry-leading noise-free characteristics without...
Open the catalog to page 2s Industry-leading* noise immunity significantly reduces the design load for countermeasures against noise As shown in the graph of the output voltage Radio Emission Test fluctuation at different noise frequencies at right, in contrast to the measured peaks of standard products A to E that are easily affected by frequency-based noise, ROHM’s new product minimizes fluctuations based on frequency, making it possible to limit Standard Product B VOUT (V) output voltage variations to less than ±1% (vs ±3.5 to ±10% with standard products). Achieving high EMI immunity greatly reduces the burden...
Open the catalog to page 3b Significantly improving noise immunity by conducting a thorough review of circuits, layout, element size, and other factors optimum solution, rather than simply following the industry trend of countermeasures circuits, reviewed the layout, and selected processes reducing chip size. This breakthrough noise immunity could never be that generate optimal capacitances to dramatically improve EMI immunity. achieved with just one countermeasure, but was instead the culmination The key to success was to utilize a flexible approach in selecting the Circuit review Utilizing optimized processes...
Open the catalog to page 4f Significantly reducing the time, effort, and costs for noise countermeasures Breakthrough EMI noise immunity eliminates the need for an external CR filter and shield previously required, contributing to greater space savings while reducing peripheral component costs. Also, previously when integrating noise countermeasures, if noise evaluation fails after implementing functional and noise designs, it was necessary to start from the beginning, placing a considerable burden in terms of time, effort, and cost. In response, ROHM’s new Op Amp allows users to significantly reduce design...
Open the catalog to page 5Automotive-Grade Ground Sense Op Amps Featuring High EMI Immunity ■ Ideal for Impedance conversion and amplifying weak signals ■ Optimized for high-voltage circuits, Including engine ECUs and EVs Input Input Gain No. of VOlPT® cUS OffSet BiaS cUrreUit InputVoltage Output Voltage CMRR PSRR Rite Bandwidth j^PPSaanUre ch Vo;vage c(umrA)nt » “ c(mAr <v) w s <dB> <dB> ^ pc Automotive-Grade Ground Sense Op Amps Part No. Input Equivalent Ph m i Capacitive Load Input Bias Noise Voltage Density ase ° ®rgin Characteristics Current Input Offset Voltage (mV) 1) The information contained in this...
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