Products
Products
NS4148
The NS4148 is an ultra-low EMI, filter-free 3W mono Class D audio power amplifier.
NS4148 built-in overcurrent protection, overheat protection and undervoltage protection functions, effectively protect the chip from being damaged under abnormal working conditions.
The NS4148's filter-free PWM modulation structure and built-in gain reduce external components, PCB area, and system costs.
The NS4148 is available in MSOP8 and SOP8 packages.
NS4148 built-in overcurrent protection, overheat protection and undervoltage protection functions, effectively protect the chip from being damaged under abnormal working conditions.
The NS4148's filter-free PWM modulation structure and built-in gain reduce external components, PCB area, and system costs.
The NS4148 is available in MSOP8 and SOP8 packages.
NS4148 Description:
NS4148 Feature:
The NS4148 is an ultra-low EMI, filter-free 3W mono Class D audio power amplifier.
The NS4148 uses advanced technology to greatly reduce EMI interference over the full bandwidth range, minimizing the impact on other components.
NS4148 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 is more suitable for mobile phones and other portable audio products.
The NS4148's filter-free PWM modulation structure and built-in gain reduce external components, PCB area, and system costs.
The NS4148 is available in MSOP8 and SOP8 packages and is rated for operating temperatures ranging from -40 ° C to 85 ° C.
The NS4148 uses advanced technology to greatly reduce EMI interference over the full bandwidth range, minimizing the impact on other components.
NS4148 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 is more suitable for mobile phones and other portable audio products.
The NS4148's filter-free PWM modulation structure and built-in gain reduce external components, PCB area, and system costs.
The NS4148 is available in MSOP8 and SOP8 packages and is rated for operating temperatures ranging from -40 ° C to 85 ° C.
NS4148 Feature:
Excellent full bandwidth EMI rejection
Excellent "power on, power off" noise suppression
3W output power (10% THD, 5V supply, 4? Load)
0.05%THD+N (1W output power, 5V power supply)
No filter Class-D structure is required
Up to 90% efficiency
High PSRR: -80dB (217Hz)
Low static current (3.5mA)
Operating voltage range: 2.2V ~ 5.25V
Overcurrent protection, overheat protection, undervoltage protection
The NS4148 is available in MSOP8 and SOP8 packages
Excellent "power on, power off" noise suppression
3W output power (10% THD, 5V supply, 4? Load)
0.05%THD+N (1W output power, 5V power supply)
No filter Class-D structure is required
Up to 90% efficiency
High PSRR: -80dB (217Hz)
Low static current (3.5mA)
Operating voltage range: 2.2V ~ 5.25V
Overcurrent protection, overheat protection, undervoltage protection
The NS4148 is available in MSOP8 and SOP8 packages
NS4148 Application fields
Mobile phone (cell phone, etc.)
MP3/PMP
Mini speaker
Digital photo frame
MP3/PMP
Mini speaker
Digital photo frame
NS4148 Typical application circuit diagram:
NS4148 Chip pin Description:
MSOP8 and SOP8 pin distribution diagram
Pin function description
NS4148 Conceptual diagram:
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