LM358DR2G Operational Amplifier Symbol, Features, Applications and More
20 February 2024
Ⅱ. Technical parameters of LM358DR2G
Ⅳ. Symbol, footprint and pin configuration of LM358DR2G
Ⅵ. Circuit description of LM358DR2G
Ⅶ. The difference between LM358DR2G, LM358D and LM358DR
Ⅷ. Precautions for using LM358DR2G
LM358DR2G is a dual op-amp chip manufactured by ON Semiconductor, which is mainly used in voltage follower, voltage reference source, current source, comparator, filter, power management circuits, sensor signal processing, signal amplifier, voltage-controlled oscillator, voltage regulator and so on. In this article, we will introduce the specific information of LM358DR2G in terms of characteristics, technical parameters and applications.
The LM358DR2G is a dual operational amplifier that features low power consumption, a common-mode input voltage range extended to ground or VEE, and support for single-supply or split-supply operation. This amplifier offers several significant advantages over standard op amps in single-supply applications. It is capable of operating from supply voltages as low as 3V or as high as 32V, and its quiescent current is only one-fifth that of the MC1741 (per amplifier). Because its common-mode input range covers the negative supply, additional external biasing components are not required in many applications. In addition, its output voltage range also covers negative supply voltages.
Alternatives and equivalents:
• KA358
• LM358DG
• LM358DR2
• The manufacturer of LM358DR2G is onsemi.
• This device operates on one or two power supplies.
• The device is made using bipolar technology.
• It has 8 pins and 2 channels.
• Its gain bandwidth product is 1 MHz.
• The power supply voltage of this op amp is 3V to 32V.
• It comes in SOIC-8 package and tape & reel (TR) packaging.
• The op amp has a length of 5 mm, a width of 4 mm and a height of 4 mm.
• LM358DR2G belongs to the category of operational amplifiers.
• The minimum operating temperature of LM358DR2G is 0°C and the maximum operating temperature is 70°C.
• The LM358DR2G has a common mode rejection ratio of 70 dB and a power supply rejection ratio of 65 dB.
1. Large gain bandwidth area: The LM358DR2G has a good gain bandwidth area for high frequency applications. It provides stable and accurate amplification whether processing high-speed signals or performing complex signal processing tasks.
2. Wide voltage range: The LM358DR2G has an extremely wide range of operating voltages, from as low as 3V to as high as 32V, making it suitable for a wide range of power supply conditions.
3. Dual operational amplifiers: The LM358DR2G contains two independent operational amplifiers. This means that they can accept different input signals and amplify them independently. Therefore, this operational amplifier is ideal for application scenarios where multiple signals need to be processed at the same time, such as differential amplification, multi-channel signal processing, and so on.
4. Wide input common-mode range: The LM358DR2G has a wide input common-mode voltage range, providing greater flexibility. Its common-mode input voltage range extends to ground or VEE, which means it can handle a wide range of input signals from negative to positive supply voltages. This wide input common-mode voltage range allows the LM358DR2G to be used in a variety of complex circuit environments without worrying about input signals exceeding its processing capability.
5. Low power consumption: Under the same operating conditions, the LM358DR2G consumes less power, which extends the life of the device. For battery-powered devices, users can use the device for a longer period of time without frequent charging, which improves the practicality and convenience of the device. And for applications that require higher power consumption, such as sensor networks and IoT devices, the low-power LM358DR2G reduces the energy consumption of the entire system and improves energy utilization efficiency.
The following figure shows the symbol, footprint and pin configuration of LM358DR2G respectively.
• Voltage follower: When LM358DR2G is used as a voltage follower, its output voltage signal remains consistent with the input voltage signal, that is, the output follows the input, achieving buffered transmission of voltage.
• Oscillator: LM358DR2G is an excellent feedback network that can generate output waveforms such as sine waves and square waves. When combined with an appropriate feedback network, the LM358DR2G can form various oscillators to achieve functions such as frequency modulation and frequency synthesis.
• Voltage controlled amplifier (VCA): When used as a voltage controlled amplifier, the LM358DR2G can dynamically adjust its amplification factor through an external voltage signal to achieve precise volume control. This voltage control method allows the gain of the audio signal to be flexibly adjusted as needed, providing users with a more personalized listening experience.
• Sensor signal processing: LM358DR2G can be used for sensor signal amplification, filtering and processing. Whether it is a temperature sensor or a photoelectric sensor, it can provide stable and reliable amplification effect, allowing the sensor signal to be accurately transmitted and processed.
• Signal amplifier: The LM358DR2G can be used as a signal amplifier. It is capable of amplifying weak signals to a greater amplitude for subsequent processing or driving other circuit components.
• Filters: By combining with external components such as capacitors and resistors, the LM358DR2G can form filters such as low-pass filters and high-pass filters. They are used for processing sound, images, radio signals, etc. and can remove or emphasize signals in a specific frequency range.
• Comparator: When configured as a comparator, the two inputs of the LM358DR2G receive two signals to be compared. The internal circuitry compares these two signals and outputs the corresponding logic levels based on the comparison results. If the voltage at the positive input (non-inverting input) is higher than that at the negative input (inverting input), the comparator will output a high level; conversely, if the voltage at the negative input is higher than that at the positive input, a low level will be output.
The LM358 series is made using two internally compensated, two−stage operational amplifiers. The initial phase of both involves differential input devices Q20 and Q18, accompanied by input buffer transistors Q21 and Q17, as well as the differential to single-ended converter Q3 and Q4. This initial stage serves to fulfill not only the gain function but also handles level shifting and reduces transconductance. By reducing the transconductance, a smaller compensation capacitor (only 5.0 pF) can be employed, thus saving chip area. The transconductance reduction is accomplished by splitting the collectors of Q20 and Q18. In single-supply operation, this input stage boasts a unique capability: its input common mode range spans from the negative supply to ground, ensuring neither saturation of the input devices nor of the differential to single-ended converter. The second stage consists of a standard current source load amplifier stage.
Each amplifier is biased from an internal−voltage regulator which has a low temperature coefficient thus giving each amplifier good temperature characteristics as well as excellent power supply rejection.
The figure below shows the differences between LM358DR2G, LM358D and LM358DR.
When using LM358DR2G, we need to pay attention to the following points:
1. Pay attention to the operating temperature: The operating temperature range of LM358DR2G is from 0°C to 70°C. In order to ensure the performance and reliability of LM358DR2G, we should make sure that its operating temperature is within this range so as to avoid performance degradation or damage.
2. Avoid overloading: Although the LM358DR2G has strong processing power, we should still avoid applying excessive input or output signals to it. Overloading may cause the chip to heat up or even damaged.
3. Avoid noise interference: We should try to minimize the electromagnetic interference on the board. If possible, we can use decoupling capacitors to minimize the effect of power supply noise on the chip.
4. Power supply voltage range: According to the datasheet, the operating voltage range of LM358DR2G is single ±3V to ±32V, or ±1.5V to ±16V. Therefore, when supplying power to the chip, we should make sure that the power supply voltage is within this range.
5. Connect the inputs and outputs correctly: The LM358DR2G is a dual op-amp chip, so we need to connect its inputs and outputs correctly. Depending on the application requirements, it may need to be configured in differential input or single-ended input mode.
Frequently Asked Questions
1. What is the replacement and equivalent of LM358DR2G?
You can replace the LM358DR2G with KA358, LM358DG or LM358DR2.
2. What is LM358DR2G?
LM358DR2G is a dual operational amplifier (op-amp) integrated circuit (IC) manufactured by ON Semiconductor.
3. What is the operating temperature range of LM358DR2G?
The operating temperature of LM358DR2G ranges from 0°C to 70°C.
4. Is LM358DR2G suitable for battery-powered applications?
Yes, LM358DR2G is suitable for battery-powered applications due to its low power consumption characteristics.
