The Kynix Components

The ACS712 is a fully integrated, hall effect-based linear current sensor with 2.1kVRMS voltage isolation and a integrated low-resistance current conductor. Technical terms aside, it’s simply put forth as a current sensor that uses its conductor to calculate and measure the amount of current applied. In the blog today, we are going to discuss ACS712 current sensor from its pinout, features, alternative device to its application circuits, working principle, and CAD models and so on, the component datasheet is at the bottom of the page as always. How to use Allegro ACS712 AC/DC Current Sensor with ArduinoCatalogACS712 General DescriptionACS712 Pinout and FunctionsACS712 Features and BenefitsACS712 Functional Block DiagramACS712 CAD ModelsACS712 Typical Application CircuitsHow does ACS712 WorkACS712 PackageACS712 AlternativesACS712 ManufacturerComponent DatasheetACS712 General Description The Allegro ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.  The device consists of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy after packaging. The output of the device has a positive slope (>VIOUT(Q)) when an increasing current flows through the primary copper conduction path (from pins 1 and 2, to pins 3 and 4), which is the path used for current sensing. The internal resistance of this conductive path is 1.2 mΩ typical, providing low power loss. The thickness of the copper conductor allows survival of the device at up to 5× overcurrent conditions. The terminals of the conductive path are electrically isolated from the sensor IC leads (pins 5 through 8). This allows the ACS712 current sensor IC to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques. The ACS712 is provided in a small, surface mount SOIC8 package. The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. Internally, the device is Pb-free, except for flip-chip high-temperature Pb-based solder balls, currently exempt from RoHS. The device is fully calibrated prior to shipment from the factory.ACS712 Pinout and Functions ACS712 Features and BenefitsLow-noise analog signal pathDevice bandwidth is set via the new FILTER pin5 µs output rise time in response to step input current80 kHz bandwidthTotal output error 1.5% at TA= 25°CSmall footprint, low-profile SOIC8 package2 mΩ internal conductor resistance1 kVRMSminimum isolation voltage from pins 1-4 to pins 5-80 V, single supply operation66 to 185 mV/A output sensitivityOutput voltage proportional to AC or DC currentsFactory-trimmed for accuracyExtremely stable output offset voltageNearly zero magnetic hysteresisRatiometric output from supply voltageACS712 Functional Block DiagramACS712 CAD ModelsPart SymbolFootprint3D ModelACS712 Typical Application CircuitsApplication Circuit 1The ACS712 outputs an analog signal, VOUT. that varies linearly with the uni- or bi-directional AC or DC primary sampled current, IP, within the range specified. CF is recommended for noise management, with values that depend on the application. Application Circuit 2  Peak Detecting CircuitApplication Circuit 3This configuration increases gain to 610 mV/A(tested using the ACS712ELC-05A).Application Circuit 4Rectified Output. 3.3 V scaling and rectification application for A-to-D converters. Replaces current transformer solutions with simpler ACS circuit. C1 is a function of the load resistance and filtering desired. R1 can be omitted if the full range is desired.Application Circuit 510 A Overcurrent Fault Latch. Fault threshold set by R1 and R2. This circuit latches an overcurrent fault and holds it until the 5 V rail is powered down.How does ACS712 WorkNow that we’ve had an idea of what the ACS712 is capable of, we’ll take a look at its working principle. Well, when it comes to how a current sensor works, it can either be done through direct or indirect sensing. For the ACS712, it uses indirect sensing.For current sensors that work by direct sensing, ohm’s law is being applied to measure the drop in voltage when flowing current is detected. Here’s how the ACS712 work (Simplified):Current flows through the onboard hall sensor circuit in its ICThe hall effect sensor detects the incoming current through its magnetic field generationOnce detected, the hall effect sensor generates a voltage proportional to its magnetic field that’s then used to measure the amount of currentACS712 Package  ACS712 AlternativesGrove – 10A DC Current Sensor (ACS725)ACS725With some users of the ACS712 not recommending it as your current sensor option due to its low sensitivity and bad linearity, we’ve come forth to provide our alternative recommendation: the Grove – 10A DC Current Sensor that’s based on ACS725! Based on the ACS725, this DC current sensor module is an economical and precise solution to your current sensing needs with capabilities of measuring up to 10A of DC current with a base sensitivity of 264mV/A!When drawing comparisons to the ACS712, the Grove – 10A DC Current Sensor (ACS725) has the following performance advantages: Higher-bandwith; 120KHz compared to 80kHz of the ACS712Higher sensitivity; 264mV/A compared to 66 – 185mV/A of the ACS712Grove-interface; Easy plug-and-play pairing with your Arduino/Raspberry Pi Board instead of having to solder and use breadboards Grove – ±5A DC/AC Current Sensor (ACS70331)ACS70331 (3D Model)If you’re looking for a current sensor that supports both AC and DC yet retaining performance advantages over the ACS712, the above Grove – ±5A DC/AC Current Sensor (ACS70331) is your pick! Based on Allegro’s high sensitivity current sensor IC; ACS70331EESATR-005B3, it’s suitable for <5A current sensing applications, alongside its base sensitivty of 200mV/A! Its features include: 1 MHz bandwidth with response time <550 nsLow noise: 8 mA(rms) at 1 MHz1.1 mΩ primary conductor resistance results in low power lossHigh DC PSRR enables use with low accuracy power supplies or batteries (3 to 4.5 V operation)ACS712 ManufacturerAllegro MicroSystems is redefining the future of power and sensing technologies. From green energy to advanced mobility and motion control systems, their team is passionate about developing intelligent solutions that move the world forward and give our customers a competitive edge. With global engineering, manufacturing and support, Allegro is a trusted partner to both large enterprises and regional market leaders worldwide.Component DatasheetACS712 Datasheet 

I IntroductionLM1875 is a power amplifier integrated block. It has few peripheral circuits, large distortion-free power, and can work with both single and dual power supplies. It also has a safe working area protection (inductive load) for overload, overheating and reverse potential suppression in the circuit, suitable for high-grade audio circuits. And LM1875 is also suitable for audio amplification, servo amplification, bridge amplification, and power amplification in test systems.This Vedio Take LM1875 as an Example to Explain the Bridged Audio AmplifierCatalogI IntroductionII DC Negative Feedback BTL Power Amplifier CircuitIII 20W Single-power Amplifier CircuitIV LM1875 Power Amplifier Circuit with High and Low AdjustmentV Current Feedback Power Amplifier CircuitVI FAQOrdering & QuantityII DC Negative Feedback BTL Power Amplifier CircuitThe LM1875 amplifier circuit is simple, where the sound is beautiful, and has the timbre of the amplifier. The power amplifier produced by it can output power up to 25W under positive and negative 25V voltage. In order to output more power, it can be connected to BTL circuit. The output power of the following circuit exceeds 60W (8 ohm speaker), which is designed as a current negative feedback circuit, and the sound is more beautiful.In addition, the main recommendation of this board is to cancel C11 and C21 in Figure 1, and add a capacitor at the input (change C11 here). Change the circuit to a DC amplifier, the sound effect will be better.　　Figure 1. LM1875 CuircuitIII 20W Single-power Amplifier CircuitThe circuit is shown in Figure 3. The basic working principle of the LM1875 single power supply and the dual power supply is the same. The difference is that when the single power supply is used, R1 and R2 are used for voltage division, while 1/2VCC is taken as the bias voltage and added to R3 to pin 1, making the output voltage change up and down based on 1/2VCC. Therefore, the maximum dynamic range can be obtained. 　　Figure 2. LM1875 CuircuitIV LM1875 Power Amplifier Circuit with High and Low Adjustment　　Figure 3. LM1875 CuircuitThe circuit above is composed of three parts:An attenuated tone control circuit controlled by high and low soundsAn LM1875 amplifier circuitApower supply circuit.The tone part uses attenuating tone circuits controlled by high and low bass respectively, among which R02, R03, C02, C01, W02 form a bass control circuit; C03, C04, W03 form a treble control circuit; R04 is the isolation resistance, W01 is the volume controller, adjusting the volume of the amplifier; C05 is the DC blocking capacitor, to prevent the LM1875 DC potential of the subsequent stage from affecting the tone circuit of the preceding stage.The amplifying circuit adopts LM1875, R08, R09, C06. Among them, the magnification of the circuit is determined by the ratio of R08 and R09; and C06 is used to stabilize the DC zero potential drift of the 4th pin of LM1875, but it has a certain impact on the sound quality; C07, R10 is to prevent the amplifier from generating low-frequency self-excitation .The load impedance of this amplifier is 4→16Ω.Figure 4. LM1875 CuircuitAs for the power supply, in order to ensure the sound quality, the output power of the power transformer should not be less than 80W, and the output voltage is 2*25V.The filter capacitor uses two 2200μF/25V electrolytic capacitors in parallel, and the positive and negative power supplies share four 2200μF/25V capacitors.The two 104 monolithic capacitors are high-frequency filter capacitors, which are beneficial to the sound quality of the amplifier.V Current Feedback Power Amplifier CircuitThe current mode power amplifier has better sound quality. The current mode power amplifier circuit using the power amplifier integrated circuit LM1875 is shown in Figure 5.In the figure, the resistor R3 connected in series with the speaker RL has a very small value. The current flowing through the speaker flows through R3, and the sampling feedback voltage generated at both ends is proportional to the output current. The voltage formed on R3 is sent to the feedback input of the amplifier through R2 to form a current negative feedback, which increases the output impedance of the amplifier and reduces the damping coefficient. The so-called Ruber network was cancelled in the circuit, and only C4 was used as the lead compensation.Although the setting of R2 prevents the output feedback current from being fed back 100% to the negative input terminal, it prevents the harmful effects of large feedback on the input terminal; At the same time, the bias of the positive and negative input terminals is balanced, and the DC offset of the output terminal is eliminated.Figure 5. LM1875 CuircuitFirst solder two small 0.22uF capacitors to the pin ③ and ⑤, and weld the other ends of them together as the ground terminal. Regarding the resistance to grounding, all are bent and welded at this point. The ±24V power cord and output cord are directly soldered to the relevant pins. Short-circuit the input terminal to ground, solder a 10Ω resistor to the RL speaker, and test the voltage of the output terminal to ground after power-on.If it is less than 100 mV and there is basically no deviation after half an hour, you can disconnect the input short circuit and connect the speaker.VI FAQWhat is LM1875?The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. The LM1875 delivers 20 watts into a 4 or 8 load on ±25V supplies. Using an 8 load and ±30V supplies, over 30 watts of power may be delivered. What is a amplifier chip?Audio amplifier chips are used in circuits used to process audio signals. Which IC is best for audio amplifier?Top Amplifier ICs Companies in the World：Maxim Integrated.STMicroelectronics.ON Semiconductor.Diodes Incorporated.MaxLinear.Qorvo.NXP Semiconductor.Silicon Lab. After reading the blog, have you better understand LM1875? If you are also interested in detailed introduction to LM1875 , you may wish to browse right here right now!Finally, if you have any questions about LM1875, please do not hesitate to leave a message in the comment section below!

A 1N4001 is a diode of 1N400x series, all diodes of this series are widely used in electronic devices.The 1N4001 diode is manufactured with good specifications, such as 1A upstream current, 3W power dissipation, small in size with low price, which makes it ideal for a wide variety of electronic applications.How to use a Diode (1N4001 example)?Catalog1N4001 Pinout1N4001 CAD Model1N4001 Parameters1N4001 Alternatives1N4001 Advantage1N4001 Features1N4001 Application1N4001 Documents & Media1N4001 Mechanical Characteristics1N4001 Environmental and Export Classifications1N4001 Ambient Mounting Data1N4001 Package1N4001 MeaningProduct ManufacturerComponent DatasheetFAQ1N4001 Pinout1N4001 diode has a cathode (-) and anode (+). In the schematic symbol, the tip of the triangle with the line on top of it is the cathode.Diode polarity Current can flow from the anode to the cathode only and never from the cathode to the anode - 1N4001 diode is like a one-way valve.Pin No.Pin NameDescription1AnodeCurrent always Enters through Anode2CathodeCurrent always Exits through Cathode1N4001 CAD Model1N4001 Symbol1N4001 Footprint1N4001 3D Model1N4001 ParametersAverage Rectified Current1ABrandON SemiconductorCapacitance15pFConfigurationSingleContact PlatingTin, MatteCurrent Rating1ADiameter2.72mmElement ConfigurationSingleForward Current1AForward Voltage1.1VHeight5.2 mmIf - Forward Current1 AIr - Reverse Current10 uALead FreeLead FreeLength5.2 mmManufacturerON SemiconductorMax Operating Temperature175°CMax Reverse Current5uAMax Reverse Voltage (DC)50VMax Surge Current30AMaximum Operating Temperature+ 175 CMountThrough HoleNumber of Pins2Output Current1APackage / CaseDO-41-2PolarityStandardPower Dissipation3WREACH SVHCNo SVHCReverse Voltage50VRoHSNSubcategoryDiodes & RectifiersTermination StyleThrough HoleTypeStandard Recovery RectifiersUnit Weight0.010935 ozVf - Forward Voltage1.1 VVoltage Rating (DC)50VVr - Reverse Voltage50 VWeight0.245g1N4001 AlternativesManufacturerManufacturer Part No.Diodes1N4002-TDiodes1N4002G-TON Semiconductor1N4002GDiodes Zetex1N4002-BVishay Semiconductors1N4002E-E3/73Vishay Semiconductors1N4002-E3/54Vishay Semiconductors1N4002-E3/73Vishay Semiconductors1N4002E-E3/54Vishay Semiconductors1N4002E-E3/53Vishay Semiconductors1N4002-E3/531N4001 Advantage1N4001 DiodeA diode is a device which allows current flow through only one direction. That is the current should always flow from the Anode to cathode. The cathode terminal can be identified by using a grey bar as shown in the picture above.For 1N4001 Diode, the maximum current carrying capacity is 1A it withstand peaks up to 30A. Hence we can use this in circuits that are designed for less than 1A. The reverse current is 5uA which is negligible. It can withstand reverse voltage peak up to 50V.1N4001 FeaturesAverage forward current is 1ANon-repetitive peak current is 30AReverse current is 5uA.RMS reverse voltage is 35VPeak repetitive Reverse voltage is 50VAvailable in DO-41 Package1N4001 ApplicationCan be used to prevent reverse polarity problemHalf Wave and Full Wave rectifiersUsed as a protection deviceCurrent flow regulators1N4001 Documents & MediaResource TypeLinkEnvironmental InformationMaterial Declaration 1N4001PCN Obsolescence/ EOLMultiple Devices 19/Jun/2009PCN Part Status ChangeStatus Chg 22/Feb/2017HTML Datasheet1N4001-4007 Datasheet1N4001 Mechanical CharacteristicsCase: Epoxy, MoldedWeight: 0.4 gram (approximately)Finish: All External Surfaces Corrosion Resistant and Terminal Leads are Readily SolderableLead and Mounting Surface Temperature for Soldering Purposes: 260°C Max. for 10 Seconds, 1/16 in. from casePolarity: Cathode Indicated by Polarity Band1N4001 Environmental and Export ClassificationsAttributeDescriptionMoisture Sensitivity Level (MSL)1 (Unlimited)1N4001 Ambient Mounting DataData shown for thermal resistance, junction−to−ambient (RJA) for the mountings shown is to be used as typical guideline values for preliminary engineering or in case the tie point temperature cannot be measured.1N4001 Package1N4001 Meaning1N4001 series diodes are 1 Ampere current handling general purpose rectifier diode. 1N is stands for American standard semiconductor (Generic name) with ONE JUNCTION.400X Series like 4001,4002 to 4007 is indicates the voltage, current and power rating of the diodes.1N= Means One Junction between P-type and N-Type.400= Means Serial number of the rectifier.1= Means Defines its (1 A) current rating.Product ManufacturerON Semiconductor (Nasdaq: ON) is a Fortune 500 company driving energy efficient innovations, empowering customers to reduce global energy use. The company is a leading supplier of semiconductor-based solutions, offering a comprehensive portfolio of energy efficient power and signal management, logic, standard and custom devices. The company’s products help engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, medical and military/aerospace applications.ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.ns. Component Datasheet1N4001 DatasheetFAQWhat is 1N4001 diode used for?The 1N400x (or 1N4001 or 1N4000) series is a family of popular one-ampere general-purpose silicon rectifier diodes commonly used in AC adapters for common household appliances. Its blocking voltage varies from 50 volts (1N4001) to 1000 volts (1N4007).What is the difference between 1N4001 and 1N4007 diodes?Differences are : Peak Repetitive Reverse Voltage of 1N4001 is 50V while that of 1N4007 is 1000V. RMS Reverse Voltage of 1N4001 is 35V while that of 1N4007 is 700V. Typical Junction Capacitance of 1N4001 is 15pF while that of 1N4007 is 8pF.What is purpose of a diode?It allows current to flow easily in one direction, but severely restricts current from flowing in the opposite direction. Diodes are also known as rectifiers because they change alternating current (ac) into pulsating direct current (dc). Diodes are rated according to their type, voltage, and current capacity.

UA741 is a general-purpose operational amplifier featuring offset-voltage null capability. In this blog today, we will walk you in the detailed introduction of UA741 op amp device, from its pinout, features, alternatives to its application, package, where and how to use this device, etc.CatalogUA741 DescriptionUA741 PinoutUA741 FeaturesUA741 AlternativesWhere to Use UA741How to Use UA741UA741 ApplicationUA741 PackageUA741 ManufacturerComponent DatasheetFAQUA741 Description UA741 is a general purpose amplifier. The high common-mode input voltage range and the lack of latch-up make the amplifier ideal for voltage-follower applications. The device is short-circuit protected and the internal frequency compensation ensures stability without external components. A low-value potentiometer may be connected between the offset null inputs to null out the offset voltage. The UA741 device is characterized for operation from 0°C to 70°C.UA741 PinoutUA741UA741 Pinout Pin NumberPin NameDescription1,5Offset N1, N2Used to set offset voltage if required2Inverting Input (IN-)The Inverting pin of the Op-Amp3Non- Inverting Input (IN+)The Non-Inverting Pin of the Op-Amp4Vcc-Connected to negative rail or ground6OutputOutput pin of the Op-Amp7Vcc+Connected to positive rail of supply voltage  8NCNo connectionUA741 FeaturesShort-Circuit ProtectionOffset-Voltage Null CapabilityLarge Common-Mode and Differential Voltage RangesNo Frequency Compensation RequiredNo Latch-UpUA741 AlternativesLM4871, AD620, IC6283, JRC4558, TL081, LF351N, MC33171NWhere to Use UA741If you've been in electronics for quite some time and started with Op-Amps, then you're sure to find the name UA741. It is a single Op-Amp package that has been widely used by engineers and students for a long time now. This Op-Amp can be used for many general purpose applications such as Voltage Followers, Buffers, Comparators, Amplifiers, Adders and more. So if you're looking for a simple old Op-Amp just for some basic circuit design, this IC might be the right choice for you. Although there are dozens of other advanced technology Op-Amps, the UA741 still seems to be the first choice for many engineers because of its reliable properties.How to Use UA741UA741 IC is very similar to the LM324 Op-Amp, and the LM324 can be considered a successor to the UA741. The main difference is that LM324 has two Op-Amps inside the package that make it more cost-effective and compact. If you are curious to learn about the few application circuits of this IC, you can read how LM324 is used, since both ICs share the same applications. Other than that one remarkable feature of the UA741 Op-Amp is that it has two offset pins (pin1 and pin 5). These two pins can be used to correct an Op-Amp offset error. This is when the voltage difference between the inverting and non-inverting pins is zero, the Op-Amp output voltage should also be zero. If this is not the case, it is considered to be offset error and can be reset to zero by providing offset voltage through offset pins that would nullify the error.UA741 ApplicationFunctions generatorIntegratorsDVD recordersSumming amplifiersDVD playersActive filtersAudio mixersVoltage followersUA741 PackageUA741 ManufacturerTexas Instruments Inc. (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. Its headquarters are in Dallas, Texas, United States. TI is one of the top ten semiconductor companies worldwide, based on sales volume. Texas Instruments's focus is on developing analog chips and embedded processors, which accounts for more than 80% of their revenue. TI also produces TI digital light processing (DLP) technology and education technology products including calculators, microcontrollers and multi-core processors. To date, TI has more than 43,000 patents worldwide.Component DatasheetUA741 Op Amp DatasheetFAQWhat is UA741?The UA741 is a high performance monolithic operational amplifier constructed on a single silicon chip. It is intended for a wide range of analog applications. The high gain and wide range of operating voltages provide superior performances in integrators, summing amplifiers and general feedback applications.What is the difference between LM741 and UA741?LM741 is designed by Texas instrument and ua741 by ST microelectronics. So they differ at the silicon level. ... The LM741 was developed by National Semi and TI developed the UA series as a second source to National. Both are 8 pin Dual In-Line packages with the same pin-out.What are the features of IC 741?The following are the basic specifications of IC 741:Power Supply: Requires a Minimum voltage of 5V and can withstand upto 18V.Input Impedance: About 2 megaohms.Output impedance: About 75 ohms.Voltage Gain: 200,000 for low frequencies.Maximum Output Current: 20mA.Recommended Output Load: Greater than 2 kiloohms.How does IC 741 work?IC 741 mainly performs mathematical operations like addition, subtraction, division, multiplication, integration, differentiation etc. IC 741 has three stages such as differential input, gain, and push-pull output. Pin 1 and 5 are “offset null” or “balance” terminals. The op amp is nothing but a differential amplifier. 

TDA7294 IntroductionThe TDA7294  is a monolithic integrated circuit in the Multiwatt15  package, intended for use as an audio class AB amplifier in  Hi-Fi field applications  (Home Stereo, self-powered loudspeakers, Topclass TV). Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4Ω and 8Ω loads even in presence of poor supply regulation. With high Supply Voltage Rejection. The built-in muting function with turn-on delay simplifies the remote operation avoiding switching on-off noises.                                                                                                                          This is a build and evaluation of the TDA7294 100 watt audio amplifier I.C.CatalogTDA7294 IntroductionTDA7294 FeaturesTDA7294 Pin Configuration and FunctionsTDA7294 Block DiagramTDA7294 Package OutlineTDA7294 AlternativesWhere and How to use TDA7294TDA7294 Electrical SpecificationsTDA7294 ApplicationsDifference Between TDA7294 and TDA7293Product ManufacturerComponent DatasheetFAQOrdering & QuantityTDA7294 FeaturesVery high operating voltage range  (±40V)DMOS power stageHigh output power(up to 100w music power)Muting/stand-by functionsNo switch on/off noiseNo Boucheron cellsVery low distortionVery low noiseShort circuit protectionThermal shutdownTDA7294 Pin Configuration and FunctionsPin functions:Pin No.Pin NamePin Description1Stand-By GNDStand-By GND, output gets connected to ground2Inverting inputThe Inverting input3Non-Inverting inputThe Non-Inverting input4SVRSupply Voltage Rejection used for power supply ripple or noise rejection5N.C.Not connected6BootstrapUsed to step-up charge7+Vs SupplyPositive supply8-Vs SupplyNegative supply9Stand-byStandby control pin used for low power mode, output runs in low current mode10MuteAudio is disabled of the output11N.C.Not connected12N.C.Not connected13+Vs PowerPositive power supply14OutOutput pin15-Vs PowerNegative power supplyTDA7294 Block DiagramTDA7294 Package OutlineMultiwatt15 V package information Mechanical Data:Multiwatt15 H package informationMechanical Data: TDA7294 AlternativesTDA7293, TDA7295, LM3886Where and How to Use TDA7294TDA7294 can be used in circuits requiring high power and high-efficiency amplification applications.R1 is the input resistance and its recommended value is 22k Ω. R2=680 Ω and R3= 22k Ω decides the loop gain of the amplifier. The R4=22k Ω and C4=10µF determine the stand by ON/OFF time duration. The R5=10k Ω and C3=10µF are used for deciding the mute time constant. Decoupling used is C1=0.47µF. C2=22mF is the feedback DC. C5=22mF Bootstrapping. C6, C8=1000mF and C7, C9 0.1mF are used for supply voltage bypass.TDA7294 Electrical SpecificationsMaximum VS Supply Voltage (No Signal) ±50 VMaximum IO Output Peak Current 10 AMaximum Top Operating Ambient Temperature Range 0 to 70 °CMaximum Tstg, Tj Storage and Junction Temperature 150 °CVS Supply Range is minimum ±10 V and maximum value ±40 VOpen-Loop Voltage Gain 80 dBClosed-Loop Voltage Gain minimum 24 dB, typically 30 dB and maximum 40 dBIb Input Bias Current 500 nATDA7294 Applications HI-FICAR-RADIOBridge Application CircuitAn audio class AB amplifierStereos systemSubwooferDifferences Between TDA7294 and TDA7293Features of TDA7293Multipower BCD technologyVery high operating voltage range (±50 V)DMOS power stageHigh output power (100 W into 8 Ω @ THD =10%, with VS = ±40 V)Muting and stand-by functionsNo switch on/off noiseVery low distortionVery low noiseShort-circuit protected (with no input signal applied)Thermal shutdownClip detectorModularity (several devices can easily be connected in parallel to drive very low impedances)Both these audio chips use DMOS or double-diffused metal–oxide–semiconductor output stages.  Supply rails are +/- 60V DC max for the TDA7293 and +/-50V DC for the TDA7294, transformer supply rails AC 32V- 0-32V to 35V-0-35V, recommendation is  32V-0-32V for 8 ohm operation. The conversion rate value of TDA7293 is also 10V/us, but it has a wider voltage supply range, and the highest available dual 50V DC power supply, which means that it has a larger dynamic range and higher output power than TDA7294,  In dual 40V DC power supply, an average output power of 100W can be achieved at 8-ohm load. Of course, if the voltage is increased to double 50V, or a smaller load such as 4 ohms, there will be greater output power, according to the characteristics of TDA7293. When selecting a transformer, a dual 28V AC voltage can be selected, so the voltage after rectification and filtering is about 40V, of course, the voltage can also be increased. Considering that there is a fluctuation in the grid voltage, it is best to be less than the maximum voltage of 50V, so that the circuit can work in a more stable condition.Product ManufacturerSTMicroelectronics (ST) group was established in June 1988 as a result of the merger of SGS Microelectronics of Italy and Thomson Of France. In May 1998 SGS-Thomson Microelectronics changed its name to STMicroelectronics Limited.It is the world's largest manufacturer of dedicated analog chips and power conversion chips, the world's largest supplier of industrial semiconductors and set-top box chips, and a world leader in discrete components, mobile phone camera modules, and automotive integrated circuits.Component DatasheetTDA7294 DatasheetFAQ What is the TDA7294?A monolithic integrated circuit in Multiwatt15 package. Where to Use TDA7294?TDA7294 can be used in circuits requiring high power and high-efficiency amplification applications. What is the conversion rate value of TDA7293?10V/us

LM358 is a dual op-amp IC integrated with two op-amps that are powered by a common power supply, these two amplifiers are independent, high gain, internally frequency compensated operational amplifiers, they were designed specifically to operate from a single power supply over a wide range of voltages. This is an interesting video demostrates how to make a smart Li-ion battery charger using LM358N.CatalogLM358N PinoutLM358N ParameterLM358N FeaturesLM358N AdvantagesLM358N vs LM358PLM358N CAD ModelsLM358N Schematic DiagramLM358N ApplicationsLM358N Application CircuitsLM358N PackageLM358N ManufacturerComponent DatasheetFAQLM358N PinoutLM358NLM358N Pinout LM358N ParameterNumber of channels (#)2Total supply voltage (Max) (+5V=5, +/-5V=10)32Total supply voltage (Min) (+5V=5, +/-5V=10)3Rail-to-railIn to V-GBW (Typ) (MHz)1Slew rate (Typ) (V/us)0.1Vos (offset voltage @ 25 C) (Max) (mV)7Iq per channel (Typ) (mA)0.25Vn at 1 kHz (Typ) (nV/rtHz)40RatingCatalogOperating temperature range (C)0 to 70Offset drift (Typ) (uV/C)7Features-Input bias current (Max) (pA)150000CMRR (Typ) (dB)85Output current (Typ) (mA)20ArchitectureBipolarLM358N FeaturesInternally frequency compensated for unity gainLarge DC voltage gain: 100 dBWide bandwidth (unity gain): 1 MHz (temperature compensated)Wide power supply range: 3V to 32V (single supply); ±1.5V to ±16V (dual supplies)Very low supply current drain (500 µA) - essentially independent of supply voltageLow input offset voltage: 2 mVInput common-mode voltage range includes groundDifferential input voltage range equal to the power supply voltageLarge output voltage swingLM358N AdvantagesTwo internally compensated op ampsEliminates need for dual suppliesAllows direct sensing near GND and VOUT also goes to GNDCompatible with all forms of logicPower drain suitable for battery operationLM358N vs LM358PThe suffix denotes the manufacturer's packaging code.The 'N' is used by most manufacturers for the plastic 8-pin package.The 'P' is used by a few manufacturers for the plastic 8-pin package.There is NO difference between the two devices, just the mfgrs.LM358N CAD ModelsPart SymbolFootprint3D ModelLM358N Schematic DiagramLM358N Schematic DiagramLM358N ApplicationsTransducer AmplifiersConventional op-amp circuitsIntegrator, Differentiator, Summer, adder, Voltage follower, etc.,DC gain blocks, Digital multimeters, OscilloscopesComparators (Loop control & regulation)LM358N Application CircuitsPower AmplifierLED DriverVoltage Controlled Oscillator (VCO)DC Coupled Low-Pass RC Active FilterAC Coupled Inverting AmplifierYou can find more application circuits in the LM358N datasheet at the bottom of this page.LM358N PackageLM358N ManufacturerTexas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. It is one of the top 10 semiconductor companies worldwide based on sales volume. The company's focus is on developing analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces TI digital light processing technology and education technology products including calculators, microcontrollers and multi-core processors. The company holds 45,000 patents worldwide as of 2016.Component DatasheetLM358N DatasheetFAQWhat is LM358 op amp?LM358 is a dual op-amp IC integrated with two op-amps powered by a common power supply. It can be considered as one half of LM324 Quad op-amp which contains four op-amps with common power supply. The differential input voltage range can be equal to that of power supply voltage.What is LM358 used for?It is used in detector circuits. The abbreviation LM358 indicates an 8-pin integrated circuit, comprising two operational amplifiers at low power. The LM358 is designed for general use as amplifiers, high-pass filters, low band pass filters, and analog adders.What is a dual op amp?Dual Supply op amp has two supply rails with reference to GND to an opamp i.e +VCC and -VCC rails. Your applied voltage can swing between these two voltage levels. Hence, the output signal can swing only between these voltage(+VCC and -VCC) limits and they cannot exceed above these levels.What is operational amplifier in electronics?An operational amplifier is an integrated circuit that can amplify weak electric signals. An operational amplifier has two input pins and one output pin. Its basic role is to amplify and output the voltage difference between the two input pins.