User’s Guide
ROHM Solution Simulator
Ultra Small Package & High Precision Rail-to-Rail Input/Output CMOS Operational Amplifier

TLR377GYZ – Non-inverting Amplifier– DC Sweep simulation
This circuit simulates DC sweep response with Op-Amp as a non-inverting amplifier. You can observe the output voltage when
the input voltage is changed. You can customize the parameters of the components shown in blue, such as VSOURCE, orperipheral 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

2

How to simulate

Figure 1. Simulation Schematic
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‘Manual Options’. You can modify it.

Simulate

Figure 2. Simulation Settings and execution
Table 1. Simulation settings default setup
Parameters
Default
DCSimulation TypeVSOURCE
Parameter Sweep
Balanced
Advanced options
Convergence Assist
Manual Options.temp 27

Note
Do not change Simulation TypeVOLTAGE_LEVEL from 0 V to 5 V by 0.1 V-No. 67UG039E Rev.001
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TLR377GYZ – Non-inverting Amplifier – DC Sweep simulation
3Simulation Conditions
Table 2. List of the simulation condition parameters
InstanceTypeParameters
Name
Voltage_levelVSOURCE
Voltage Source
AC_magnitude
AC_phase
Voltage_level
Voltage Source
VDD
AC_magnitude
For Op-Amp
AC_phase
Voltage_level
VREF
Voltage Source
AC_magnitude
AC_phase
Voltage_level
Voltage Source
SDNB
For Shutdown
AC_magnitude
SettingAC_phase(Note 1) Set it to the guaranteed operating range of the Op-Amps.

4

User’s Guide

Default
Value
50.0
0.0
50.0
0.0
2.5
0.0
0.0
50.00.0

Variable Range
Min
Max05.5
fixed
fixed
1.8(Note1) 5.5(Note1)
fixed
fixed
VSS
VDD
fixed
fixed
VSS
VDD
fixedfixedUnits
VV°
VV°
VV°
VV°

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
Non-inverting input+IN
Inverting input-IN
Positive power supply
VDD
Negative power supply / GroundVSS
OutputOUT
Shutdown setting
SDNB

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User’s Guide

TLR377GYZ – Non-inverting Amplifier – DC Sweep simulation
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 parametersof equivalent circuit shown below. The default values of equivalent components are set to zero except for the ESR ofC. You can modify the values of each component.
Table 4. List of capacitors used in the simulation circuit
TypeInstance NameDefault Value

R2_1
R2_2
RL2
C2_1
CL2

10k
10k
10k1010ResistorCapacitor

Variable Range
MinMax
1k1M
1k1M
1k1M, NC
10100
free, NCUnitsΩΩΩpFpF

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 Ω.
(Note 2) These parameters can take any positive value or zero in simulation but it does not guarantee the operationof the IC in any condition. Refer to the datasheet to determine adequate value of parameters.

6Recommended Products
6.1Op-Amp
TLR377GYZ : Ultra Small Package & High Precision Rail-to-Rail Input/Output 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.

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Notice

Notice1) The information contained in this document is intended to introduce ROHM Group (hereafterreferred to asROHM) products. When using ROHM products, please verify the latest specifications
or datasheets before use.
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