LM4766 Module Power Amplifier Dual 30W High Voltage High Current Wide Voltage Ra

Product Description

Highlights:

The LM4766 module of our shop is a series dual 30W audio amplifier with silence function, that is, each circuit can provide 30W power, need dual power supply, internal peak protection, widely used in various stereo fields.

LM4766 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 there are operational problems, please 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) Our modules are guaranteed to provide real module parameters, functions and pictures, and all modules will be shipped after detection.

Please contact customer service after purchase, we will send the information to your mailbox

Module parameters

Module model: LM4766

Module type: low frequency power amplifier

Input signal form: single-ended

Number of channels: 2 channels

Input voltage range: 2Vpp (MAX); generally within the power supply range

Module input impedance: 10K ohm

Module supply voltage: ± 10V ～ ± 37V

Module supply current: ± 4A; large output current requires large supply current

Module output impedance: low impedance

Output voltage range: 64Vpp (MAX); in the case of ± 37V power supply

Output current: 4A (MAX)

Output power: 30W (MAX) single channel

Module gain: 44 times; default gain is 44 times, first stage 11 times, second stage 3 times, channel A: G1 = R1 / R2 + 1, G2 = R5 / R4 + 1, channel B: G1 = R12 / R16 + 1, G2 = R18 / R17 + 1

Input offset voltage: 1mV (MAX)

Input offset drift: 2uV / ℃ (MAX)

Input bias current: 125nA (MAX)

Input voltage noise: 35nV√Hz (1KHz)

Module weight: 155g

Module protection: none; no reverse connection protection, unlimited current protection

Module weight: 155g

Module specifications: 81 * 81 * 52mm; 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

Module description

The LM4766 is a stereo audio amplifier that can provide 30W of power per channel in a non-isolated package.

The performance of the LM4766 utilizes its self-peak instantaneous temperature protection circuit to provide intrinsically and dynamically protected safe operating areas, making it in the same category as discrete and hybrid amplifiers. The output is protected against overvoltage, undervoltage, and overload, including thermal runaway and transient temperature peaks.

Each amplifier in the LM4766 has an independent smooth transition fade-in / fade-out mute, which minimizes output popping. The IC has a minimum noise floor of 2μV and a THD + N value of 0.06% at rated power, which is very low, which makes the LM4766 ideal for high-end stereo TVs or small component systems. Suitable for motor-driven speaker drive, transformer drive and audio amplifier. It can also amplify triangle wave, sine wave and square wave signals.

(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 42V.

(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: 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 of the seal 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? Just amplify the current?

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 .

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, and high-power input can be added with heat-dissipating grease and air cooling.

Q: Can I use the second level directly instead of the first level?

A: You can directly go to the second stage, but you need to remove the first stage chip, and then input the signal from OUT1. Otherwise, the first-level chip will affect the signal input.

About Elecdemo:

Elecdemonded in 2015 , Elecdemo is a well-established technology company that integrates supply , R & D , prodund sales , supporting agents , franchises , customization and bulk purchases . We are committed to provid our customers with the best electronic functional module products at the lowest price . We have a professional design and production team to providecustomer service to help our customers greatly improve the efficiency of development，learn and research.

About Transpiration:

1. Global shipping, (except for some countriesand APO/ FPO)

2. Import duties: Taxes are not included in theprice or shipping costs. Customs fees are the responsibility of the buyer.

3. If the package is not delivered within 30 days. please contact us. We will help you solve the problem.

About Delivery:

1. We will process the order in time after the payment is confirmed. Due to the difference in inventory status and time, we will choose to ship from our first warehouse for fast delivery.

2. We only send to the confirmed order address. Your order address must match your shipping address.

3.Service transit time is provided by the carrier, excluding weekends and holidays. Delivery time may vary, especially on holidays.

About Guarantee:

1. manufacturers limited warrantyon defective items(excluding items damagedand/or misused after receipt). The accessory is backed by a 3 month warranty

2. The displayed image is taken in real time, but due to different production batches, thecolor may be different. The picture is for reference only, and the actual object is subjectto the final one

3. The defective item must be reported and reurned within the warranty period(if possible,in the original packaging

4. If the product features do not match the advertisement, we will bear all shipping costs.

About Feedback:

1. If you are satisfied, please leave 5 stars positive feedback, we are very honored to receivea generous real assessment and photos, th !!!!

2. For any product or shipping problems, please contact us before opening a dispute orleaving any feedback/negative feedback, we will try our best to solve the problem untilyou are satisfied.

Returns and Refunds:

1. You have 7 days to contact us and you will not be able to return from the receipt date after30 days. If the item has been owned by you for more than 7 days, it will be considered usedand we will not refund or replace it. with no exceptions! Return shipping costs are theresponsibility of the buver.

2. All returned items must be in original packaging, you must provide us with a shippingtracking number.

3. If there is a return, please contact us in advance, we will help you solve it. If it cannot besolved online, we will accept your return and refund it to you.

About Prime Living

Prime Living is a Canadian online store offering a carefully selected range of quality products for home, automotive, tools, outdoor living, electronics and more.

We are committed to fast order processing, secure packaging and reliable tracked shipping to provide an excellent shopping experience.

Shipping policy

We carefully handle each order to ensure your package arrives quickly and safely. Please note that factors such as weather, postal traffic, or carrier performance may occasionally cause delays beyond our control.

We provide free shipping and dispatch all orders within 2 business days of payment, often sooner. All shipments are sent via international express air shipping, with a tracking number provided so you can follow your order every step of the way.

. Please provide a physical address, as we do not ship to P.O. Boxes.

Returns

Your satisfaction is important to us. Hexlight offers a 14-day Free return policy: if you are not fully satisfied with your purchase, you may request either a full refund or an exchange. All return shipping costs are fully covered by us.

Condition

Brand New

Shipping

This item is shipped directly from our supplier in China with tracking.