AD8403 Product Overview:
    AD8403 is a stereo audio power amplifier that can provide AB class amplifier performance with D-class amplifier effect. When operating at 1KHz and 5V, the maximum driving power is 3W (4Ω load, THD+N ≤ 10%). The AD8403 has a simple application circuit and adopts a low-noise, filter free structure, which can eliminate the output low-pass filter of traditional D-class amplifiers. It only requires a very small number of peripheral devices to provide high-quality output power.
    AD8403 is packaged in SOP-16. AD8403 can be controlled to enter shutdown mode, thereby reducing power consumption, and also has a mute control function. The AD8403 has an internal overheat automatic shutdown protection mechanism. The special circuit architecture enhances noise resistance and reduces radio frequency interference.

AD8403 Product Features:
Wide working voltage range: 2.5V~5.5V
Low leakage current in power down mode: 1.5μA (typical)
Output power: 3W (4Ω load, THD+N ≤ 10%)
No need for coupling capacitors, pull-up capacitors, or buffer networks
Overheating protection function
Short circuit current protection
quiet mode
Adopting SOP-16 packaging

AD8403 Application:
Monitor
Recreational machines
LCD TV
Notebook computer
Mobile phone/hands-free phone
Portable DVD player

AD8403 Ordering Information:

Product model	Package	Packing
AD8403	SOP-16	3000/Reel

AD8403 Internal Schematic diagram:

AD8403 Pin Definition Diagram:

AD8403 Pin description:

AD8403 Typical Application Circuit:

Note: Component description in the above application diagram
Ri: Set the input resistance for the closed-loop gain, while also forming a high pass filter with Ci, and fC=1/(2 π RiCi).
Ci: Input coupling capacitor, mainly used to isolate the DC voltage at the input terminal of the operational amplifier, and also forms a high pass filter with the input resistor Ri, fC=1/(2 π RiCi).
Cs: Provide power bypass capacitors for power filters, refer to the "Application Information" section to set and select appropriate bypass capacitors.
CB: For the filtering capacitor of the VDD/2 reference voltage bypass pin, refer to the "Application Information" section to set and select the appropriate bypass capacitor