Analog Signal Input Class D Amplifier for Piezo Speaker

Manufacturer's part number :


Manufacturer New Japan Radio

New Japan Radio

Description :

The NJU8752 is an analog signal input monaural class D amplifier for Piezo speaker. The NJU8752 includes Inversion operational amplifier input circuit, PWM modulator, an output-short protector and a low voltage detector. Input part operates on 3.3V(TYP) as power supply and Output part operates up to 16.0V(MAX). Therefore, it drives Piezo speaker with louder sound and High efficiency.

The NJU8752 incorporates BTL amplifier, which eliminate AC coupling capacitors, capable of driving Piezo speaker with simple external LC low-pass filters. Class D operation achieves lower power operation for Piezo speaker, thus the NJU8752 is suited for battery powered applications.

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  • Piezo Speaker Driving
  • 1-channel Analog Signal Input, 1-channel BTL Output
  • Standby(Hi-Z), Mute Control
  • Built-in Low Voltage Detector
  • Built-in Short Protector
  • Operating Voltage 2.7 ~ 3.6V (Input), 6.0 ~ 16.0V (Output)
  • C-MOS Technology
  • Package Outline (SSOP14)
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Channel 1  
Operating Voltage 2.7 to 3.6V  
Standby Function Yes  
Mute Function Yes  
Attenuator No  
Package Outline SSOP-14