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Taidacent OPA544 Power Amplifier High-Voltage Now on sale Jacksonville Mall High-Current Opera

Taidacent OPA544 Power Amplifier High-Voltage High-Current Opera

$34

Taidacent OPA544 Power Amplifier High-Voltage High-Current Opera

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Product Description

OPA544 is high voltage / high current operation, suitable for driving high power loads of various amplifiers. The high-performance FET operational amplifier circuit and high-power output stage are combined in a single microcontroller.

OPA544 is protected by internal current limit and thermal shutdown circuit. OPA544 has industry standards and can be easily installed on the heating device; the heat sink has excellent heat dissipation performance. Suitable for motor drive, speaker drive, transformer drive and audio amplifier. It can also amplify triangle wave, sine wave and square wave signals.

Parameter

Module model OPA544
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 10K ohm
Module supply voltage ± 10V ~ ± 35V
Module supply current ± 4A; large output current requires large supply current
Module output impedance low impedance
Output voltage range 60Vpp (MAX); in the case of positive and negative 35V power supply
Output current 4A (MAX)
Output power 30W (MAX)
Module gain 44 times; the default gain is 44 times, the first level is 11 times, the second level is 4 times, G1 = R1 / R2 + 1, G2 = R10 / R12 + 1
Input offset voltage 1mV (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: 100 * 64 * 42mm; length * width * height-PCB size

The module becomes hot: there are heat sinks; 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

Size

High-Voltage, High-Current Operational AmplifierHigh-Voltage, High-Current Operational Amplifier

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 should not exceed plus or minus 35V.

(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.

Interface diagram

OPA544  high-voltage operational amplifierOPA544  high-voltage operational amplifier

FAQ

Q: Is the magnification fixed? How to adjust?

A: The default magnification of the module is 44 times. If you need to adjust the magnification, you can only replace the resistor on the board. The original resistance 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, and 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. This is easy to self-excitation. It is recommended to change to resistance attenuation first, and then operation amplification; total gain is 1 That's it.

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.

OPA544 test diagram

OPA544 Amplifier BoardOPA544 Amplifier Board

​input:Vpp=100mA Freq=1.00KHz

power supply: ±32V;

input amplitude: 1.8Vpp;

output peak value: 60Vpp can amplify a variety of waveforms;

effective band: DC-70KHz, suitable for many high current AC drive devices.

Taidacent OPA544 Power Amplifier High-Voltage High-Current Opera


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