Feature 8002 audio amplifier
The 8002 audio amplifier is a mono bridged audio power amplifier capable of delivering 3W of continuous average power to 3Ω BTL load. This IC comes with features like thermal shutdown protection, unity-gain stability, external gain set, and supply voltage of this IC is 5V.
Supply Voltage: 2V to 6V. Output Power: 3W
Shutdown Current: 0.6µA (typ.). Audio – Load Impedance: 3 Ohms
Improved PSRR at 217 Hz & 1 kHz: 60 dB. Available in SOP8 package
The 8002 audio amplifier new is a Class-AB audio power amplifier with a Shutdown mode feature. The 8002 is designed specifically to provide high-quality output power with a minimal amount of external components. It does not require output coupling capacitors or bootstrap capacitors. The 8002 is ideally suited for audio speakers and other low voltage applications.
So if you are looking for a Dual Operational amplifier IC with high-gain and wide bandwidth for audio amplification, then this IC might be the right choice for you.
An application circuit from the MD8002A datasheet is given below. As shown in the circuit, the MD8002A has two operational amplifiers internally, allowing for a few different amplifier configurations. The first amplifier’s gain is externally configurable; the second amplifier is internally fixed in a unity-gain, inverting configuration.
The closed-loop gain of the first amplifier is set by selecting the ratio of Rf to Ri while the second amplifier’s gain is fixed by the two internal 40kΩ resistors. The figure shows that the output of amplifier one serves as the input to amplifier two, which results in both amplifiers producing signals identical in magnitude, but 180° out of phase.
Applications of MD8002A
Low Voltage Audio Systems
An audio amplifier is one kind of electronic amplifier that is used to amplify electronic audio signals which have low power like the output signal from the radio receiver. These amplifiers are applicable in all kinds of sound systems like sound strengthening, home theater system, surround-sound system, audio systems in the home, entertainment center, and guitar amplifiers.
In a typical audio playback chain, the audio amplifier is the last electronic stage before the signal is transmitted to the loudspeakers. The input of the audio amplifier is any audio source such as CD players, record players, cassette players, and digital audio players. Most of the amplifiers use low-level inputs.
For instance, an audio amplifier’s input signal is the electric guitar signal. This signal measures a hundred microwatts and generates few watts which is used in small electronic devices like clock radios, a stereo system used in homes, etc. This article discusses an overview of the MD8002A Audio Amplifier.
Definition: The 8002 audio amplifier best is one kind of audio power amplifier used to deliver 2.0 watts of power constantly to a BTL load with below 10% distortion from a power supply of 5V DC. It is specially designed to give high-quality o/p power using fewer amounts of components. It doesn’t use bootstrap or output coupling capacitors.
This amplifier is perfectly suitable for low voltage applications as well as audio speakers through a particular pop-click removing circuit. These amplifiers provide ideal pop-click characteristics in switch on & off conditions. This amplifier is unity-gain stable & arranged through external gain-setting resistors.
The main features of the MD8002A audio amplifier include the following.
It has the capability of an arrangement for an external gain
It is available in SOP8 Package
It is stable for unity gain
It doesn’t need any o/p coupling capacitors, bootstrap capacitors otherwise snubber networks.
Enhanced circuitry removes pop-click noise throughout turn ON & OFF conditions.
The main specifications of the MD8002A audio amplifier include the following.
The range of supply voltage is 2V to 6V
The o/p Power is 3W
The shutdown current is 0.6µA
The load impedance of audio is 3 Ohms
The improved PSSR is 60 dB at 217 Hz and 1kHz
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