NS4203 Description:
    The NS4203 is an ultra-low EMI, filter-free, 3W dual-channel Class D audio amplifier.
    In addition, when the headphone plug is plugged into the jack, the audio power amplifier drives the stereo headphone in single-ended operating mode.
    The NS4203 uses advanced technology to greatly reduce EMI interference over the full bandwidth range, minimizing the impact on other components. To simplify the design of the audio system, the NS4203's bridge-connected speaker amplification mode and single-ended stereo headset amplification mode are implemented on the same chip.
    The NS4203's filter-free PWM modulation structure and built-in feedback resistance reduce external components, PCB area, and system costs.
    NS4203 built-in overcurrent protection, overheat protection and undervoltage protection functions, effectively protect the chip from being damaged under abnormal working conditions. The new circuit design is fully optimized using spread spectrum technology, and the efficiency of up to 85% is more suitable for portable audio products.
    The NS4203 is available in SOP16 and DIP16 packages with a rated operating temperature range of -40 ° C to 85 ° C.

3W output power (10% THD, 5V supply, 3? Load)
0.1%THD+N (0.5W output power, 5V power supply)
Excellent full bandwidth EMI rejection
Excellent "power on, power off" noise suppression
Up to 85% efficiency
High PSRR: -80dB (217Hz)
Operating voltage range: 2.2V ~ 5.25V
Overcurrent protection, overheat protection, undervoltage protection
Stereo headset amplification mode
The NS4203 is available in SOP16 and DIP16 packages

laptop
Desktop computer
Low voltage sound system