OPA541 Audio Power Amplifier Module High-Voltage High-Current Power Amp 5A

Description

OPA541 Audio Power Amplifier Module High-Voltage High-Current Power Amp 5A
Description
Highlights:
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.
OPA541 module shipping list
Physical module + PDF schematic diagram + after-sale technical support + electrostatic bag packaging + shockproof foam
Tips:
(1) The module interface of our shop is clear and the performance is stable. Please perform functional verification under the corresponding experimental conditions in conjunction with the schematic diagram provided by our shop.
(2) The basic parameters of this module are in the details page, providing PDF information of the module information; engineering documents are not provided, please be clear to the buyer, if you have operational problems, you can consult customer service.
(3) Buyers, before using the module, please read the details page of this module to understand the power supply and use restrictions, to avoid damage to the module due to improper operation.
(4) The modules of our shop are guaranteed to provide real module parameters, functions and pictures, and all modules are shipped only after detection.
Please contact customer service after purchase. We will send the information to your mailbox.
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Module 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
Module input impedance: 1K ohm
Module supply voltage: ± 10V ～ ± 40V
Module supply current: ± 5A; large output current requires large supply current
Module 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: 2uV / ℃ (MAX)
Input bias current: 125nA (MAX)
Input voltage noise: 35nV√Hz (1KHz)
Module weight: 125g
Module protection: none; no reverse connection protection, unlimited current protection
Module weight: 125g
Module specifications: 96 * 64 * 41mm; length * width * height-PCB size
The module becomes hot: there is a heat sink, and forced air cooling is required at high current
Module heating factors: the input and output voltage is too large or the module is damaged
Module working temperature: -40 ℃-+ 75 ℃ industrial grade
Module features: positive and negative power LED indication
Application range: small signal amplification, audio signal amplifier, motor drive, servo amplifier, etc.
Module interface type: SMA signal signal input and output, 5.08 blue power card wire holder
Module 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.
Precautions for using the module
(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.
input:Vpp=100mV   Freq=1.00KHz
Frequently asked questions
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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
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Shipping
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2.Items will be shipped within 1-3 business day when we received payment.
3.Delivery time depends on destination and other factors;
4.International buyers please note:
a.Import duties, taxes and charges are not included in the item price or shipping charges. These charges are buyer’s responsibility. We will try our best to reduce the risk of the custom duties.
b.Please check with your country's customs office to determine what these additional costs will be prior to buying.
Returns policy
1.If the item is not as described or damaged in transportation, please send it back within 7 days upon date of receipt
2.For defective item, we guarantee free exchange or full refund within 30 days from the day of placing order
3.Buyers pay shipping fees at their own cost to return products for exchange or refund. We will be responsible for the postage of replacements
4.Items must be unused, in original packaging and include all parts, accessories and packaging
5.When we receive your returned item, we will investigate the situation and consider to offer replacement or refund according to the situation
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