LMR1001YF-C Offset Voltage Rail-to-Rail Input and Output CMOS Amplifier
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Specifications
- Product Name: ROHM Solution Simulator
- Type: Automotive Zero Drift Low Offset Voltage Rail-to-Rail
Input/Output CMOS Operational Amplifier
Product Usage Instructions
1. Simulation Schematic
This product simulates the frequency response using an Op-Amp as
a voltage follower to observe the AC gain and phase of the output
to input voltage ratio.
2. How to Simulate
The simulation settings can be configured in the ‘Simulation
Settings’ as shown in Figure 2. Table 1 displays the default setup
for the simulation.
Simulation Settings
| Parameters | Default | Note |
|---|---|---|
| Simulation Type | Frequency-Domain | Do not change Simulation Type |
3. Simulation Conditions
The simulation condition parameters are listed in Table 2,
detailing the instance name, type, and specific parameters.
4. Op-Amp Model
The Op-Amp model pin functions are implemented for simulation
purposes, as shown in Table 3.
5. Peripheral Components
5.1 Bill of Material
Table 4 displays the list of components used in the simulation
schematic, including capacitors with equivalent circuit
parameters.
5.2 Capacitor Equivalent Circuits
The equivalent circuits of capacitors are illustrated in Figure
3, allowing modifications to the values of each component.
Frequently Asked Questions (FAQ)
Q: Can I modify the simulation frequency range?
A: Yes, you can modify the start and end frequencies in the
simulation settings.
Q: Are protection circuits implemented in the Op-Amp
model?
A: No, the Op-Amp model is a behavioral model focusing on
input/output characteristics without protection circuits.
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User’s Guide
ROHM Solution Simulator
Automotive Zero Drift Low Offset Voltage Rail-to-Rail Input/Output CMOS Operational Amplifier
LMR1001YF-C Voltage Follower Frequency Response simulation
This circuit simulates the frequency response with Op-Amp as a voltage follower. You can observe the AC gain and phase of the ratio of output to input voltage when the input source voltage AC frequency is changed. You can customize the parameters of the components shown in blue, such as VSOURCE, or peripheral components, and simulate the voltage follower 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.
Simulation Settings
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
Simulate
`Manual Options’. You can modify it.
Figure 2. Simulation Settings and execution
Table 1. Simulation settings default setup
Parameters
Default
Note
Simulation Type
Frequency-Domain
Do not change Simulation Type
Start Frequency End Frequency
0 Hz 100 MHz
Simulate the frequency response for the frequency range from 0 Hz to 100 MHz.
Advanced options
Balanced Convergence Assist
–
Manual Options
.temp 27
–
©2024 ROHM Co., Ltd. 1/3
66UG086E Rev.001 Feb.2024
LMR1001YF-C Voltage Follower Frequency Response simulation
User’s Guide
3 Simulation Conditions
Table 2. List of the simulation condition parameters
Instance Name
Type
Parameters
Voltage_level
VSOURCE Voltage Source AC_magnitude
AC_phase
VDD
Voltage Source for Op-Amp
Voltage_level AC_magnitude AC_phase
(Note 1) Set it to the guaranteed operating range of the Op-Amps.
Default Value
2.5 180m
0.0 5 0.0 0.0
Variable Range
Min
Max
0
5.5
free
fixed
2.7(Note1) 5.5(Note1)
fixed
fixed
Units
V V ° V V °
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
NC1
No connection inside
NC2
No connection inside
NC3
No connection inside
©2024 ROHM Co., Ltd. 2/3
66UG086E Rev.001 Feb.2024
LMR1001YF-C Voltage Follower Frequency Response simulation
User’s Guide
5 Peripheral Components
5.1 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
Resistor
R1_1 RL1
0 10k
Capacitor
C1_1 CL1
0.1 10
Variable Range
Min
Max
0
10
1k
1M, NC
0.1
22
free, NC
Units
k pF pF
5.2 Capacitor Equivalent Circuits
(a) Property editor
(b) Equivalent circuit
Figure 3. 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.
6 Recommended Products
6.1 Op-Amp
LMR1001YF-C : Automotive Zero Drift Low Offset Voltage Rail-to-Rail I/O CMOS Op-Amp. [JP] [EN] [CN] [KR] [TW] [DE]
LMR1001YG-C : Automotive Zero Drift Low Offset Voltage Rail-to-Rail I/O CMOS Op-Amp. [JP] [EN] [CN] [KR] [TW] [DE]
LMR1002F-LB : Automotive Zero Drift Low Offset Voltage Rail-to-Rail I/O CMOS Op-Amp. [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. 3/3
66UG086E Rev.001 Feb.2024
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.
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Documents / Resources
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