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| NJM2904 SINGLE-SUPPLY DUAL OPERATIONAL AMPLIFIER GENERAL DESCRIPTION The NJM2904 consists of two independent,high gain,internally frequency compensated operation amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages.Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. Application areas include transducer amplifiers,DC gain blocks,and all the conventional op amp circuits which now can be more easily implemented in single power supply systems.For example,the NJM2904 can be directly operated off of the standard +5V power supply voltage which is used in digital systems and will easily provide the required interface electronics without requiring the additional 15V power supplies. FEATURES Single Supply Operating Voltage Low Operating Current Slew Rate Bipolar Technology Package Outline PIN CONFIGURATION PIN FUNCTION 1.A OUTPUT 2.A -INPUT 3.A +INPUT 4.GND 5.B +INPUT 6.B -INPUT 7.B OUTPUT + 8.V NJM2904L PACKAGE OUTLINE NJM2904D NJM2904M NJM2904V NJM2904L ( +3V~+32V ) ( 0.7mA typ. ) ( 0.5V/s typ. ) DIP8,DMP8,SIP8,SSOP8 NJM2904D NJM2904M NJM2904V EQUIVALENT CIRCUIT ( 1/2 Shown ) Ver.2003-03-18 -1- NJM2904 ABSOLUTE MAXIMUM RATINGS ( Ta=25C ) PARAMETER Supply Voltage Differential Input Voltage Input Voltage Power Dissipation Operating Temperature Range Storage Temperature Range SYMBOL ++V (V /V ) VID VIC PD Topr Tstg RATINGS 32 ( or 16 ) 32 -0.3~+32 ( DIP8 ) 500 ( DMP8 ) 300 ( SSOP8 ) 300 ( SIP8 ) 800 -40~+85 -50~+125 UNIT V V V mW C C ELECTRICAL CHARACTERISTICS ( Ta=25C,V+=5V ) PARAMETER Input Offset Voltage Input Offset Current Input Bias Current Large Signal Voltage Gain Maximum Output Voltage Swing Input Common Mode Voltage Range Common Mode Rejection Ratio Supply Voltage Rejection Ratio Output Source Current Output Sink Current Channel Separation Operating Current Slew Rate Unity Gain Bandwidth SYMBOL VIO IIO IB AV VOM VICM CMR SVR ISOURCE ISINK CS ICC SR fT TEST CONDITION RS=0 RL2k RL=2k MIN. 3.5 0~3.5 20 8 TYP. 2 5 25 100 85 100 30 20 120 0.7 0.5 0.2 MAX. 7 50 250 1.2 UNIT mV nA nA dB V V dB dB mA mA dB mA V/s MHz VIN =1V,VIN =0V + VIN =0V,VIN =1V f=1k~20kHz,Input Referred RL= +V /V =15V +V /V =15V + - -2- Ver.2003-03-18 NJM2904 TYPICAL CHARACTERISTICS Ver.2003-03-18 -3- NJM2904 TYPICAL CHARACTERISTICS -4- Ver.2003-03-18 NJM2904 TYPICAL CHARACTERISTICS Ver.2003-03-18 -5- NJM2904 APPLICATION Improvement of Cross-over Distortion Equivalent circuit at the output stage NJM2904,in its static state ( No in and output condition ) when design,QU being biassed by constant current ( break down beam ) yet,QL stays OFF. While using with both power source mode,the cross-over distortion might occur instantly when QL ON. There might be cases when application for amplifier of audio signals,not only distortion but also the apparent frequency bandwidth being narrowed remarkably. It is adjustable especially when using both power source mode,constantly to use with higher current on QU than the load current ( including feedback current ),and then connect the pull-down resister RP at the part between output and GND pins. [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. -6- Ver.2003-03-18 |
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