Stereo Headphone Amplifier and Audio Line Amplifier IC

Manufacturer's part number :


Manufacturer New Japan Radio

New Japan Radio

Description :

The NJM2774 is a headphone amplifier and 2-channel audio line amplifier IC.Each amplifier has a fixed DC Gain. Therefore, it is connectable directly to 3.3V operating device without input coupling capacitor. The headphone amplifier and one of audio line amplifier(Amplifier 2) include Low-pass filter for PWM input signal. Further, another audio line amplifier (Amplifier 3) corresponds both single-end input and differential input. Also, it includes 3-circuit voltage detector and mute transistor control circuit.

The NJM2774 is suitable for audio applications with a headphone and audio line outputs.

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  • Headphone Amplifier (48kHz LPF,+8.5dB Fixed Gain)
  • 2-channel Audio Line Amplifier (Amplifier 2 : 48kHz LPF, +11dB Fixed Gain Amplifier 3 : +9dB Fixed Gain)
  • Operating Voltage (V+1=11.4 to 20V, V+2=8.5 to V+1V)
  • Operating Current (10mA typ. (V+1), 6mA typ. (V+2))
  • Voltage Detector (3 Circuits)
  • Mute transistor control circuit
  • Bipolar Technology
  • Package Outline (SSOP32)
Features Similar products
Number of channels 2  

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Operating voltage (V) 1 to 20  
Output power 50mW  
Stand-by No  
Mute No  
Package outline SSOP-32