PAM8403DR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The PAM8403DR is a stereo audio amplifier based on a 3W dual BTL/class-D power amplifier in a compact 6-pin package. It is a full three-stage amplifier optimized for single Li-ion cell or two-AA cell audio operation, allowing portable products to run for extended periods on low voltage batteries. The low supply current allows the amplifier to run either on the power supply rail or off a DC battery, while the highly efficient switching topology ensures significant power savings.

The PAM8403DR integrates two separate drivers and a power stage in a tiny 6-pin package as well as a power-saving low-power shutdown mode. When the thermal shutdown circuit of the power amplifier is activated, both drivers and power stage are shut down to protect the amplifier from overheating. The other features include gain selectable tracking power-up or power-down circuitry, and DC volume control for single-ended input.

The PAM8403DR offers high performance for audio applications such as portable stereo amplifiers, and is suitable for consumer audio applications, including portable audio equipment, MP3 and CD players, portable PA systems, mobile phones, and PDAs.

The Working Principle of a PAM8403DR is based on Class-D audio amplifier, which is a switching audio amplifier. It employs pulse-width modulation, or PWM, to control the power output of the amplifier and to provide high efficiency. In a Class-D amplifier, the input signal is first converted into a series of pulses, where the pulse width is determined by the current signal amplitude. The signal pulses are then amplified and sent to the speakers for output. This method is advantageous over traditional linear amplifiers because the switching topology results in much higher efficiency.

The PAM8403DR also features an adjustable gain, which is adjustable through an external resistor. This feature allows for flexibility in system setup and output level control. The PAM8403DR also provides protection against over-voltage and thermal protection, making the amplifier suitable for use in consumer audio applications, professional audio, and automotive audio.

In conclusion, the PAM8403DR is a power-efficient, compact stereo audio amplifier based on a 3W dual BTL/class-D power amplifier in a compact 6-pin package. It provides high performance in consumer audio applications, portable audio equipment, MP3 and CD players, portable PA systems, mobile phones, and PDAs. It also features an adjustable gain and protection against over-voltage and thermal protection. The Class-D topology provides high efficiency while the adjustable gain and power-saving shutdown mode contribute to its power savings.

The specific data is subject to PDF, and the above content is for reference