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User Guide for ROHM models including: BD7285FV-LB, BD7285FV-LB Non Inverting Amplifier, BD7285FV-LB, Non Inverting Amplifier, Inverting Amplifier, Amplifier
ROHM Solution Simulator | 罗姆半导体集团(ROHM Semiconductor)
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DocumentDocumentUser's Guide ROHM Solution Simulator Low Noise Rail-to-Rail Input/Output High Speed CMOS Operational Amplifier BD7285FV-LB Non-inverting Amplifier (Sine Wave Input) Transient Response simulation This circuit simulates the transient response to sine wave input with non-inverting amplifier configured Op-Amps. You can observe the output voltage and how faithfully the sine wave input voltage is reproduced. You can customize the parameters of the components shown in blue, such as VSOURCE, or peripheral components, and simulate the non-inverting amplifier with the desired operating condition. You can simulate the circuit in the published application note: Operational amplifier, Comparator (Tutorial). [JP] [EN] [CN] [KR] General Cautions Caution 1: The values from the simulation results are not guaranteed. Please use these results as a guide for your design. Caution 2: These model characteristics are specifically at Ta=25°C. Thus, the simulation result with temperature variances may significantly differ from the result with the one done at actual application board (actual measurement). Caution 3: Please refer to the Application note of Op-Amps for details of the technical information. Caution 4: The characteristics may change depending on the actual board design and ROHM strongly recommend to double check those characteristics with actual board where the chips will be mounted on. 1 Simulation Schematic Figure 1. Simulation Schematic 2 How to simulate The simulation settings, such as parameter sweep or convergence options, are configurable from the `Simulation Settings' shown in Figure 2, and Table 1 shows the default setup of the simulation. In case of simulation convergence issue, you can change advanced options to solve. The temperature is set to 27 °C in the default statement in `Manual Options'. You can modify it. Simulation Settings Simulate Table 1. Simulation settings default setup Parameters Default Simulation Type Time-Domain End Time 60 µs Advanced options Simulation Resolution - Manual Options .temp 27 Figure 2. Simulation Settings and execution Note Do not change Simulation Type 1e-7 - ©2024 ROHM Co., Ltd. No. 67UG099E Rev.001 Nov.2024 1/3 BD7285FV-LB Non-inverting Amplifier (Sine Wave) Transient Response User's Guide 3 Simulation Conditions Table 2. List of the simulation condition parameters Instance Name Type Parameters Frequency Peak_voltage Initial_phase VSOURCE Voltage Source DC_offset DF AC_magnitude AC_phase VDD Voltage Source For Op-Amp Voltage_level AC_magnitude AC_phase Voltage_level VREF Voltage Source AC_magnitude AC_phase Initial_value Pulse_value Voltage Source ramptime_initial_to_pulse SDNB For Shutdown ramptime_pulse_to_initial Setting Start_delay Pulse_width Period (Note 1) Set it to the guaranteed operating range of the Op-Amps. 3.1 VSOURCE parameter setup Default Value 100k 0.5 0 2.5 0.0 0.0 0.0 5 0.0 0.0 2.5 0.0 0.0 5 0 100 100 25 50 1 Variable Range Min Max 10 10M 0 5.5 free 0 5.5 fixed fixed fixed 2.5(Note1) 5.5(Note1) fixed fixed VSS VDD fixed fixed VSS VDD VSS VDD free free free free 1 - Units Hz V ° V 1/s V ° V V ° V V ° V V ns ns µs µs ms Figure 3 shows how the VSOURCE parameters correspond to the VIN stimulus waveform. Peak_voltage 1/Frequency Initial_phase DC_offset VIN VO SDNB Figure 3. VSOURCE parameters and its waveform 4 Op-Amp model Table 3 shows the model pin function implemented. Note that the Op-Amp model is the behavioral model for its input/output characteristics, and neither protection circuits nor functions unrelated to the purpose are implemented. Table 3. Op-Amp model pins used for the simulation Pin Name Description +IN Non-inverting input -IN Inverting input VDD Positive power supply VSS Negative power supply / Ground OUT Output SDNB Shutdown setting ©2024 ROHM Co., Ltd. No. 67UG099E Rev.001 Nov.2024 2/3 BD7285FV-LB Non-inverting Amplifier (Sine Wave) Transient Response User's Guide Peripheral Components 4.1 Bill of Material Table 4 shows the list of components used in the simulation schematic. Each of the capacitors has the parameters of equivalent circuit shown below. The default values of equivalent components are set to zero except for the ESR of C. You can modify the values of each component. Table 4. List of capacitors used in the simulation circuit Type Instance Name Default Value R2_1 10k Resistor R2_2 10k RL2 10k Capacitor C2_1 CL2 10 25 Variable Range Min Max 1k 1M 1k 1M 1k 1M, NC 0.1 100 free, NC Units pF pF 5.2 Capacitor Equivalent Circuits (a) Property editor (b) Equivalent circuit Figure 4. Capacitor property editor and equivalent circuit The default value of ESR is 2m . (Note 2) These parameters can take any positive value or zero in simulation but it does not guarantee the operation of the IC in any condition. Refer to the datasheet to determine adequate value of parameters. 5 Recommended Products 5.1 Op-Amp BD7285FV-LB : Low Noise Rail-to-Rail Input/Output High Speed CMOS Operational Amplifier. [JP] [EN] [CN] [KR] [TW] [DE] Technical Articles and Tools can be found in the Design Resources on the product web page. ©2024 ROHM Co., Ltd. No. 67UG099E Rev.001 Nov.2024 3/3 Notice Notice 1) The information contained in this document is intended to introduce ROHM Group (hereafter referred to asROHM) products. When using ROHM products, please verify the latest specifications or datasheets before use. 2) ROHM products are designed and manufactured for use in general electronic equipment and applications (such as Audio Visual equipment, Office Automation equipment, telecommunication equipment, home appliances, amusement devices, etc.) or specified in the datasheets. Therefore, please contact the ROHM sales representative before using ROHM products in equipment or devices requiring extremely high reliability and whose failure or malfunction may cause danger or injury to human life or body or other serious damage (such as medical equipment, transportation, traffic, aircraft, spacecraft, nuclear power controllers, fuel control, automotive equipment including car accessories, etc. hereafter referred to as Specific Applications). Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses, or losses incurred by you or third parties arising from the use of ROHM Products for Specific Applications. 3) Electronic components, including semiconductors, can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against physical injury, and damage to any property, which a failure or malfunction of products may cause. 4) The information contained in this document, including application circuit examples and their constants, is intended to explain the standard operation and usage of ROHM products, and is not intended to guarantee, either explicitly or implicitly, the operation of the product in the actual equipment it will be used. As a result, you are solely responsible for it, and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses, or losses incurred by you or third parties arising from the use of such information. 5) When exporting ROHM products or technologies described in this document to other countries, you must abide by the procedures and provisions stipulated in all applicable export laws and regulations, such as the Foreign Exchange and Foreign Trade Act and the US Expor t Administration Regulations, and follow the necessary procedures in accordance with these provisions. 6) The technical information and data described in this document, including typical application circuits, are examples only and are not intended to guarantee to be free from infringement of third parties intellectual property or other rights. ROHM does not grant any license, express or implied, to implement, use, or exploit any intellectual property or other rights owned or controlled by ROHM or any third parties with respect to the information contained herein. 7) No part of this document may be reprinted or reproduced in any form by any means without the prior written consent of ROHM. 8) All information contained in this document is current as of the date of publication and subject to change without notice. Before purchasing or using ROHM products, please confirm the latest information with the ROHM sales representative. 9) ROHM does not warrant that the information contained herein is error-free. ROHM shall not be in any way responsible or liable for any damages, expenses, or losses incurred by you or third parties resulting from errors contained in this document. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. 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