NS4259 Description:
    The NS4259 is a fully differential input, ultra-low EMI, filter free, 5W high efficiency dual channel digital audio amplifier. In addition, NS4259 also has built-in dual operational amplifier function, flexible application.
    NS4259 adopts full differential input design, which makes the power amplifier have better characteristics of common mode noise suppression. The NS4259 uses advanced technology to greatly reduce EMI interference over the full bandwidth range, minimizing the impact on other components. Its output without filter PWM modulation structure and built-in feedback resistance reduce external components, PCB area and system costs.
    The NS4259 operates at a voltage of 5V, and each channel is capable of reaching 2Ω The load provides 5W output power.
    NS4259 built-in overcurrent protection, overheat protection and undervoltage protection functions, effectively protect the chip from being damaged under abnormal working conditions. And the use of spread spectrum technology to fully optimize the new circuit design, up to 90% efficiency more suitable for low voltage, high power output audio system.
    The NS4259 is available in an SOP-28 package with a rated operating temperature range of -40°C to 85°C.

Output power: 3.0W x 2(4Ω Load), 3.8W×2(3Ω Load), 5.0W ×2(2Ω Load)
Operating voltage range: 3V ~ 5.25V
0.5%THD (1 W output power, 5V power supply, 4? Load)
Built-in dual op amp function
Excellent full bandwidth EMI rejection
Excellent "power on, power off" noise suppression
Up to 90% efficiency
Overcurrent protection, overheat protection, undervoltage protection
The NS4259 is available in an SOP-28 package

Portable microphone