Datasheet

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NJM2073

Ver.2004-03-01

DUAL LOW VOLTAGE POWER AMPLIFIER

■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE

The NJM2073 is a monolithic integrated circuit in 8 lead

dual-in-line package,which is designed for dual audio power

amplifier in portable radio and handy cassette player.

■ FEATURES

● Operating Voltage ( V

=1.8V~15V )

● Low Crossover Distortion

● Low Operating Current

● Bridge or Stereo Configuration

● No Turn-on Noise

● Package Outline DIP8,DMP8

● Bipolar Technology

■ PIN CONFIGURATION

NJM2073D

NJM2073M

NJM2073D

NJM2073M

Summary of content (11 pages)

PAGE 1
NJM2073 DUAL LOW VOLTAGE POWER AMPLIFIER ■ GENERAL DESCRIPTION The NJM2073 is a monolithic integrated circuit in 8 lead dual-in-line package,which is designed for dual audio power amplifier in portable radio and handy cassette player. ■ FEATURES ● Operating Voltage ● Low Crossover Distortion ● Low Operating Current ● Bridge or Stereo Configuration ● No Turn-on Noise ● Package Outline ● Bipolar Technology ( V+=1.
PAGE 2
NJM2073 ■ ABSOLUTE MAXIMUM RATINGS ( Ta=25˚C ) PARAMETER SYMBOL RATINGS UNIT Supply Voltage Output Peak Current V+ IOP V A Power Dissipation PD Input Voltage Range Operating Temperature Range Storage Temperature Range VIN Topr Tstg 15 1 ( DIP8 ) 700 ( DMP8 ) 300 ± 0.4 -40~+85 -40~+125 mW V ˚C ˚C ■ ELECTRICAL CHARACTERISTICS D-Type (1) BTL Configuration ( Test Circuit Fig.
PAGE 3
NJM2073 (2) Stereo Configuration ( Test Circuit Fig.2 ) PARAMETER Operating Voltage Output Voltage Operating Current Input Bias Current Output Power ( Each Channel ) SYMBOL V+ VO ICC IB PO PO PO PO Total Harmonic Distortion Voltage Gain Channel Balance Input Impedance Equivalent Input Noise Voltage Ripple Rejection Cutoff Frequency PO PO THD AV ∆AV ZIN VNI1 VNI2 RR fH TEST CONDITION RL=∞ THD=10%,f=1kHz V+=6V,RL=4Ω ( Note ) V+=4.5V,RL=4Ω V+=3V,RL=4Ω V+=2V,RL=4Ω THD=1%,f=1kHz V+=6V,RL=4Ω V+=4.
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NJM2073 (2) Stereo Configuration ( Test Circuit Fig.
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NJM2073 ■ PARASTIC OSCILLATION PREVEMTING CIRCUIT Put 1Ω+0.22µF on parallel to load,if the load is speaker.Recommend putting 0.1µF and more than 100µF capacitors with good high frequency characteristics in to near ground and supply voltage pins. In BTL operation of less than 2V supply voltage,parastic oscillation may be occurred with R=1Ω.And so recommended R to be the same value of pure resistance(r) when it is lower than 3V. ■ MUTING CIRCUIT When Mute ON.OUTPUT level saturates to GND side. Fig.
PAGE 6
NJM2073 (2) The Application Example of Voltage Gain Reduction. ( STEREO ) Fig.6 indicates the application example and Table1 indicates the recommendable value of parts to be attached externally. Table1,Applicating purpose and Recommended Value of Externally parts to be attached.
PAGE 7
NJM2073 ● Application for Voltage Gain Reduction ( BTL ) Fig.7 indicates the application example,Table2 shows recommended value of externally attaching parts. Table2 Applicating purpose and Recommended Value of External Part EXTERNAL PARTS Rg Rs Rf C1 C2 CP1 CP2 r C APPLICATION PURPOSE DC condition ground of plus input AV shall be decided with Rf AV shall be decided with Rs RECOMMENDED VALUE Below about 10kΩ About 5kΩ Releasing minus input in to DC condition Preventing Oscillation About 0.
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NJM2073 ■ TYPICAL CHARACTERISTICS -8- Ver.
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NJM2073 ■ TYPICAL CHARACTERISTICS Ver.
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NJM2073 ■ TYPICAL CHARACTERISTICS - 10 - Ver.
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NJM2073 ■ TYPICAL CHARACTERISTICS [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. Ver.