What Is TDA2004R Amplifier?

What Is TDA2004R?
- The TDA2004R is a versatile Class B dual audio power amplifier.
- The TDA2004R is housed in the Multiwatt11 package for automotive audio applications.
- It is an excellent choice for boosting audio power in car sound systems.
- The TDA2004R can deliver compact, efficient designs with minimal external components.
- It does not require electrical insulation between the package and the heatsink, reducing component count.
Pinout of TDA2004R
1. INPUT+(1): Positive input for the first audio channel.
2. INPUT-(1): Negative input for the first audio channel.
3. SVRR: Supply Voltage Rejection Ratio pin, used for filtering.
4. INPUT-(2): Negative input for the second audio channel.
5. INPUT+(2): Positive input for the second audio channel.
6. GND: Ground pin.
7. BOOTSTRAP(2): Bootstrap capacitor for the second channel.
8. OUTPUT(2): Output pin for the second audio channel.
9. +VS: Positive supply voltage pin.
10. OUTPUT(1): Output pin for the first audio channel.
11. BOOTSTRAP(1): Bootstrap capacitor for the first channel.
Circuit of TDA2004R
The TDA2004R receives an input signal, amplifies these low-level signals, and then outputs them to drive a speaker, producing the sound we hear.
In the circuit, the input signal first enters the TDA2004R through the input pins. These signals then pass through the amplification circuit, where they are processed with appropriate gain before being output to the speaker via the output pins. At the same time, the power supply pin of the TDA2004R provides the necessary power, while the ground pin closes the current loop. To enhance the performance of the amplifier, the TDA2004R also uses bootstrap capacitors on the pins, which help to improve output power and stability, especially when operating with low-impedance loads.
Specification of TDA2004R
Device Type: Dual Audio Power Amplifier
Package Type: Multiwatt11
Supply Voltage (Vcc): 8V ~ 18V
Output Power: 35W (max) at 14.4V with 4Ω load
Maximum Output Current: 3.5A
Load Impedance: Down to 1.6Ω
Total Harmonic Distortion (THD): 0.1%
Gain: 30 dB
Max Output Power x Channels @ Load: 12W x 2 @ 2Ohm
Operating Temperature Range: -40°C ~ 150°C
Channels: 2 (stereo)
Features of TDA2004R
- Low distortion
- Low noise
- Protection against:
– Output AC short circuit to ground
– Overrating chip temperature
– Load dump voltage surge
– Fortuitous open ground
– Very inductive loads
Where to Use TDA2004R?
The TDA2004R is primarily used in car audio systems and audio power amplifiers, particularly suited for applications requiring high output power and low impedance load driving. With its strong current driving capability and low load adaptability, it is ideal for car speaker amplifiers, providing clear, high-quality audio output while meeting the high power demands of automotive audio systems.
In addition to car audio, the TDA2004R can also be used in other applications requiring efficient audio amplification, such as portable speakers, desktop audio systems, and small audio devices.
How to Connect TDA2004R?
When connecting the TDA2004R, the +VS pin (pin 9) should be connected to the positive power supply, and the GND pin (pin 6) should be connected to ground. This ensures that the amplifier receives the necessary power for operation.
Next, connect the audio input signal to the input pins. INPUT+ (pin 1) and INPUT- (pin 2) receive the positive and negative components of the audio signal, respectively. These pins can be connected to an audio signal source, such as a radio or audio player. To ensure proper signal transmission, coupling capacitors may be used at the input to block any DC components from the signal.
Finally, connect the output pins (pins 10 and 8) to the speaker. The TDA2004R will drive the speaker to produce sound. Additionally, to improve the amplifier's performance, especially when driving low-impedance loads, a bootstrap capacitor can be added between pins 7 and 11 to stabilize the power output.
Package of TDA2004R
The TDA2004R uses the Multiwatt11 package, a common power amplifier package designed for applications requiring high power and efficient heat dissipation. The Multiwatt11 package features 11 pins arranged in a compact layout, making it easy to install on a circuit board. Its dimensions are: 19mm in length, 15mm in width, and 4.7mm in thickness, making it suitable for most standard mounting hole distances.
FAQs
What are the typical applications of the TDA2004R?
The TDA2004R is primarily used in car audio amplifiers, portable speaker systems, desktop audio systems, and other small to medium-sized audio applications where high output power and low-impedance load handling are required.
What external components are needed for the TDA2004R?
The TDA2004R requires a few external components such as input coupling capacitors, a power supply filter capacitor, and optional bootstrap capacitors to enhance performance.
How do I protect the TDA2004R from thermal overload?
Proper heat dissipation is essential for preventing thermal overload. The TDA2004R should be mounted with adequate heat sinking to manage power dissipation.