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Details, datasheet, quote on part number:NJM2769A
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Datasheet text preview:
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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
1 2 3 4 8 7 6 5
PIN FUNCTION 1.OUT1 2.MUTE 3.IN1 4.GND 5.IN2 6.BIAS 7.OUT2 + 8.V
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
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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=32,Ta=25°C unless otherwise specified)
PARAMETER Operating Voltage Operating Current Reference Voltage Closed Loop Gain Channel Balance Output Power Total Harmonic Distortion Output Noise Voltage Mute Attenuation Channel Separation Ripple Rejection Ratio Input Voltage H-level Input Voltage L-level
SYMBOL V
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TEST CONDITIONS No Signal No Signal
MIN. 4.5 5 -0.5
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 %
I CC Vref GV GV PO1 PO2 THD Vno ATT CS RR VIH VIL
RL=32, THD=0.1% RL=16, THD=0.1%
30 40 -
Rg=0, A-Weighted Vo/Vin
65 2.0 0.0
dBV -88 (39.8) (µVrms) -70 V
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dB dB dB V V
Vripple=-20dBV, Rg=0
0.3
s COMTROL PIN INFOMETION
PARAMETER MUTE ON MUTE OFF CONTROL SIGNAL L H OPERATING CONDITION NON-SIGNAL OUTPUT SIGNAL
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s TYPICAL APPLICATION
NJM2769A
100uF V 16 /32 SPEAKER 100uF
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47uF
OUT2 8 7
BIAS 6 BIAS
IN2 5
V
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2 1
16 /32 SPEAKER 1 OUT1 MUTE H:SPEAKER Active L:SPEAKER Mute 100k
mute 2 3 IN1 4 GND 1F
1uF
MUTE
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