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Details, datasheet, quote on part number:NJM2768BM
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Datasheet text preview:
PRELIMINARY HEADPHONE AMPLIFIER for CD-ROM
GENERAL DESCRIPTION
The NJM2768B is a headphone amplifier designed for CDROM. It includes 0dB closed loop gain and mute circuit, requires few external component. The NJM2768B realizes very low turn-noise at mute mode. It is suitable for CD-ROM, and other general audio headphone amplifier application.
NJM2768B
PACKAGE OUTLINE
NJM2768BM
NJM2768BRB1
FEATURES
Operating Voltage Operating Current Fixed Gain Stereo Headphone Output Internal Mute Circuit Bipolar Technology Package Outline 2.8 to 5.5V + 2mA typ. at V =5V 0dB typ.
DMP8,TVSP8
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
BLOCK DIAGRAM
8
7
6
BIAS
5
MUTE
1
2
3
4
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NJM2768B
PRELIMINARY
ABSOLUTE MAXMUM RANGE (Ta=25°C)
PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range SYMBOL V
+
RATINGS +7 (DMP8) 375 (TVSP8)320 -40 to +85 -50 to +150
UNIT V mW °C °C
PD Topr Tstg
ELECTRICAL CHARACTERISTICS (V+=5.0V,Vin=0dBV,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
+
TEST CONDITIONS No Signal No Signal
MIN. 2.8 -1 -0.5
TYP. 5.0 2.0 2.1 0 0 50 100 0.02 -104 (6.3) -80 110 70 -
MAX. 5.5 4.0 1 +0.5 0.1
UNIT V mA V dB dB mW mW %
IC C 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
90 2.0 0.0
dBV -94 (20) (µVrms) -70 V
+
dB dB dB V V
Vripple=-20dBV, Rg=0
0.3
CONTROL PIN INFORMATION
PARAMETER MUTE ON MUTE OFF CONTROL SIGNAL L H OPERATING CONDITION NON-SIGNAL OUTPUT SIGNAL
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PRELIMINARY
NJM2768B
TYPICAL APPLICATION
100F V 16/32 SPEAKER 100F
+
47F
8
OUT2 7
BIAS 6 BIAS
IN2 5 V
+
2 1
16/32 SPEAKER 1 OUT1 MUTE H: SPEAKER Active L: SPEAKER Mute 100k
mute 2 MUTE
1F
3 IN1
4 GND 1F
[CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
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