NJU72040 Datasheet, PDF (1/19 Pages) New Japan Radio – Ground Referenced Stereo Headphone Amplifier

NJU72040
Ground Referenced Stereo Headphone Amplifier
„ GENERAL DESCRIPTION
The NJU72040 is an audio headphone amplifier .
Ground-referenced outputs eliminate output coupling
capacitor. The pop noise suppression circuit removes a pop
noise at the power-on and power-off.
It is suitable for audio headphone amplifer application
„ APPLICATIONS
q Audio applications which have audio headphone interface
s PACKAGE OUTLINE
NJU72040V
„ FEATURES
q Operating Voltage
q Operating Current
q Output Coupling Capacitor-less
q Pop Noise Suppression Circuit
q Gain Select
q C-MOS Technology
q Package Outline
+2.7 to +3.6V
I_DD=10.5mA typ.
at V⁺=3.3V, No load, No Signal
SSOP14
„ BLOCK DIAGRAM
inverted
phase
INL-
INL+
V+
Reg
V+
V+
INR-
INR+
inverted
phase
32Ω
Headphone
OUTL
V+
Pop Noise
Suppression
CP
Regulator
CN
Pop Noise
Suppression
OUTR
GND
Bias ^{3MΩ MUTE}
V-
32Ω
Headphone
V+
GAIN _100kΩ
REF
Gain Select
Ver. 1.2E
–1–