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HAEDPHONE AMPLIFIER for CD-ROM
s GENERAL DESCRPTION
The NJM2769A is a headphone amplifier designed for CDROM. It inclu...
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HAEDPHONE AMPLIFIER for CD-ROM
s GENERAL DESCRPTION
The NJM2769A is a headphone amplifier designed for CDROM. It includes 6dB closed loop gain and mute circuit which require few external component. The NJM2769A realizes very low turn-noise at mute mode. It is suitable for CD-ROM , and other general audio headphone amplifier application. s PACKAGE OUTLENE
NJM2769A
NJM2769AM
s FEATURES
q q q q q q q Operating
Voltage 4.5-5.5V + Operating Current 2mA typ., at V =5V Fixed Gain 6dB typ. Stereo Headphone Output Internal Mute Circuit Bipolar Technology Package Outline DMP8
s PIN CONFIGURATION
PIN FUNCTION 1.OUT1 2.MUTE 3.IN1 4.GND 5.IN2 6.BIAS 7.OUT2 + 8.V
1 2 3 4
8 7 6 5
s BLOCK DIAGRAM
8
7
6 BIAS
5
MUTE 1 2 3 4
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s ABSOLUTE MAXMUM RANGE (Ta=25°C)
PARAMETER Supply
Voltage Power Dissipation Operating Temperature Range Storage Temperature Range (note)At on PC board SYMBOL V
+
NJM2769A
RATINGS +7 (DMP8) 375 750 (note) -40 to +85 -50 to +150
UNIT V mW °C °C
PD Topr Tstg
s ELECTRICAL CHARACTERISTICS (V+=5.0V,Vin=-6dBV,f=1kHz,RL=32Ω,Ta=25°C unless otherwise specified)
PARAMETER Operating
Voltage Operating Current Reference
Voltage Closed Loop Gain Channel Balance Output Power SYMBOL V
+
TEST CONDITIONS
MIN. 4.5
TYP. 5.0 2.0 2.1 6 0 50 100 0.02 -98 (12.6) -80 80 65 -
MAX. 5.5 4.0 7 +0.5 0.1
UNIT V mA V dB dB mW mW %
ICC Vref GV ∆G V PO1 PO2
No Signal No Signal
5 -0.5
RL=32Ω, THD=1% RL=16Ω, THD=1%
30 40 -
Total Harmonic Distortion Output Noise
Voltage Mute At...