Check the listing for details. OPA548 Power Operational Amplifier Current Amplifier 3A Continuous Current. Condition: New. Listed at 34.22 USD. Description OPA548 Power Operational Amplifier Current Amplifier 3A Continuous Current Wide Output Voltage Swing Description: The OPA541 module is a power operational amplifier capable of operating with a power supply up to 40 V and providing continuous output current up to 5 A. The internal current limiting circuit can be controlled by the user using a single external resistor, while protecting the amplifier and the load; so that it is not affected by the fault condition. Suitable for motor-driven speaker drive, transformer drive and audio amplifier. It can also amplify triangle wave, sine wave and square wave signals. Parameters: Module model: OPA541 Module type: low frequency power amplifier Input signal form: single-ended Input voltage range: 2Vpp (MAX); generally within the power supply range Input impedance: 1K ohm Supply voltage: ±10V~±40V Supply current: ±5A; large output current requires large supply current Output impedance: low impedance Output voltage range: 68Vpp (MAX); in the case of positive and negative 40V power supply Output current: 5A (MAX) Output power: 50W (MAX) Module gain: 33 times; the default gain is 33 times, the first level is 11 times, the second level is 3 times, G1=R1/R2 + 1, G2=R7/R4 + 1 Input offset voltage: 200uV (MAX) Input offset drift: 2μV/℃ (MAX) Input bias current: 125nA (MAX) Input voltage noise: 35nV√Hz (1KHz) Size: 96 * 64 * 41mm; length*width*height-PCB size Heat dissipation: heat sink, and forced air cooling is required at high current Heating factors: the input and output voltage is too large or the module is damaged working temperature: -40℃~+ 75℃, industrial grade Indication: positive and negative power LED indicator Application: small signal amplification, audio signal amplifier, motor drive, servo amplifier, etc. Interface type: SMA signal signal input and output, 5.08 blue power card wire holder Features: 1. OPA541 chip is a kind of power operational amplifier which can operate from power source to ±40V, and provides continuous output current up to 5A. The internal current limiting circuit can be a programmer with a single external resistance to protect the amplifier and load from failure conditions. 2. The OPA541 device uses a proprietary bipolar transistor process. Currently used hybrid power amplifiers require two current limiting resistor applications that do not need to be modified. 3. The seal of OPA54 1 is transformed into 11-pin electric plastic package or 8-pin gas seal of industrial standard. Electric Plastics will be packaged with curium lead frames to maximize heat transfer. 4.The T0-3 seal is isolated from the circuit so that it can be directly installed on a radiator without special insulators. Package List: 1 x Power Operational Amplifier Note: (1) The power consumption of the module is large, and the power supply needs to have a certain margin. It is recommended to use a power supply with a current drive capacity greater than twice the output current. The module can only be powered by dual power supplies. (2) In order to avoid unnecessary interference, it is recommended to use a linear power supply, the power supply cannot exceed plus or minus 40V. (3) It is recommended to use the SMA to BNC cable to directly observe the output signal for the output signal. Poor contact or poor quality wires may cause signal attenuation or excessive noise. (4) The SMA port is not available for power output, and a blue terminal block must be used. The SMA port is for observing the signal and must not overpower. (5) Due to the large power consumption and heat generation, pay attention to ventilation and heat dissipation for long-term work, and add fans to strengthen heat dissipation if necessary. (6) Since the module has a fixed magnification and no external protection circuit, it is recommended to confirm the output power and amplitude before loading to avoid damage to the module. Q&A Q: Is the magnification fixed? How to adjust? A: The default magnification of the module is 33 times. If you need to adjust the magnification, you can only replace the resistor on the board. The original resistor is 0805. The calculation formula is given in the parameter details. Q: Can the module directly drive the coil? A: The module can drive the coil, but the internal resistance of the coil is required to be greater than 4 ohms. If it is less than 4 ohms, a series power resistance is required, otherwise the module may be damaged. Q: Can the module amplify square wave or pulse? What is the module bandwidth? A: The module can amplify low-frequency square waves or pulses. Because it is an audio amplifier, the total bandwidth is not high. Signals within 100K can be amplified. The module is compatible with DC input. Q: Can the module be enlarged 1: 1? That is, only the current is amplified. ? A: The module can support 1: 1 amplification. You need to modify the resistance configuration magnification yourself. It is not recommended to directly configure the op amp follow mode, which is easy to self-excitation. It is recommended to change to resistance attenuation first, and then operation amplification; the total gain is 1 Just fine. Q: Why the input sine wave output is square wave? What is the output current? What is the output power? A: Generally speaking, the input signal is too large, and the op amp is amplified to the cut-off distortion, which is the square wave, or the supply voltage is not enough. Can reduce the input signal and increase the supply voltage to solve. The output current of the module is determined by the output voltage and the load. I=Uout/R. Similarly, the output power P=U*I is also determined by the output voltage and the load resistance. When high power is input, heat dissipation grease and air cooling can be added. Q: Can I use the second level directly instead of the first level? A: You can use the second stage directly, but you need to remove the chip of the first stage, and then input the signal from OUT1. Otherwise, the first-level chip will affect the signal input. Payment Terms 1.We accept PayPal only. 2.All major credit cards are accepted through secure payment processor PayPal. 3.Payment must be received within 7 business days of auction closing. 4.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay. Shipping Terms - For remote regions, we will charge your extra shipping costs. Usually it cost about 35USD-50USD. We will contact you after your payment. Thanks for your understanding. Return Terms 1. If you receive defective item, please kindly notify us within 14 days. We will guide you the returning instruction for replacement or refund. 2. If you purchased in improper condition, please NOTE that the sipping and handling fee will not be refund, all return shipping fee should paid by the buyer unless item DOA. 3. We reserve the right to refuse any returns for objective reasons. Custom Duties & Taxes 1. Import duties, taxes, and charges are not included in the item price or postage cost. These charges are the buyer's responsibility. 2. Avoiding some unnecessary trouble, please check with your country's customs office to inform us what we should declare its value before shipping. Feedback 1. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers. 2. If you are satisfied with the product you received, please kindly leave us a positive feedback and 5 star DSR. If there is any problem of your order, please feel free to contact us firstly, we are responsible and credible seller, will follow it for you asap. On Nov-27-20 at 20:20:19 PST, seller added the following information: