Class D Amplifier for Digital Audio

Manufacturer's part number :


Manufacturer New Japan Radio

New Japan Radio

Description :

The NJU8725 is an 800mW-output class D Amplifier featuring 6th ΔΣ modulation. It includes Digital Attenuator, Mute, and De-emphasis circuits. It converts digital source input to PWM signal output which is converted to analog signal with simple external LC low-pass filter. The NJU8725 realizes very high power-efficiency by class D operation. Therefore, it is suitable for battery-powered applications and others.

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  • Stereo BTL Power Amplifier
  • Sixth-order 32fS Over Sampling ΔΣ and PWM
  • Internal 8fS Over Sampling Digital Filter
  • Sampling Frequency: 96kHz (Max.)
  • De-Emphasis: 32kHz, 44.1kHz, 48kHz
  • System Clock: 256fS
  • Digital Processing: Attenuator 107step, LOG Curve: Mute
  • Digital Audio Interface: 16bit, 18bit: I2S, LSB Justified, MSB Justified
  • Short Circuit Protection
  • Operating Voltage: 3.0 to 3.6V
  • Driving Voltage: VDD to 5.25V
  • C-MOS Technology
  • Package Outline: SSOP24
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Input Signal PCM  

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Channel 2  
Operating Voltage 3 to 3.6V  
Output Power 800mW  
Standby Function Yes  
Mute Function Yes  
Attenuator Yes  
Package Outline SSOP-24