LOWNOISE DUAL OPERATIONAL AMPLIFIER NJM3C GENERAL DESCRIPTION The NJM3C is a high performance dual low noise operational amplifier. This features low noise performance (nv/ Hz), and considerably higher Gain Band Width (MHz), low distortion (.3%). This makes the device especially suitable for application in high quality and professional audio. FEATURES Equivalent Input Noise Voltage : nv/ Hz typ. at khz Gain bandwidth product : MHz typ. CommonMode Rejection Ratio : db typ. High DC Voltage Gain : 9dB typ. High Slew Rate : 9V/us typ. Wide power supply range : ±3V to ±V Internal ESD protection Human body model (HBM) : ±V typ. PACKAGE OUTLINE NJM3CG (SOP8) PIN CONFIGURATION 3 A B 8 7 6 PIN FUNCTION. A OUTPUT. A INPUT 3. A +INPUT. V. B +INPUT 6. B INPUT 7. B OUTPUT 8.V + EQUIVALENT CIRCUIT (Each Amplifier) ver.3
NJM3C ABSOLUTE MAXIMUM RATINGS (Ta= C) PARAMETER SYMBOL RATINGS UNIT Supply voltage V + /V ± V Input voltage () V IN V.3 to V + V Output terminal input voltage V O V.3 to V + +.3 V Differential input voltage () V ID ±. V Input current (3) I IN ± ma Output shortcircuit duration () Infinite Power Dissipation P D 69 () (6) mw Operating freeair temperature range T opr to 8 C Storage temperature range T stg 6 to + C () Input voltage is the voltage should be allowed to apply to the input terminal independent of the magnitude of V+. The normal operation will establish when any input is within the Common Mode Input Voltage Range of electrical characteristics. () Differential voltage is the voltage difference between +INPUT and INPUT. (3) Excessive input current will flow if a differential input voltage in excess of approximately. V is applied between the inputs, unless some limiting resistance is used. () The output may be shorted to ground or either power supply. Temperature and/or supply voltages must be limited to ensure the maximum dissipation rating is not exceeded. () EIA/JEDEC STANDARD Test board (76. x.3 x.6mm, layers, FR) mounting (6) EIA/JEDEC STANDARD Test board (76. x.3 x.6mm, layers, FR) mounting RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL CONDITION MIN. TYP. MAX. UNIT Supply Voltage V + /V Ta=ºC ±3 ± V ELECTRICAL CHARACTERISTICS V + /V =±V, Ta= C (unless otherwise noted) PARAMETER SYMBOL CONDITION MIN. TYP. MAX. UNIT Input Offset Voltage V IO R S=Ω Ta= <Ta< 7 ( 7 ). mv Input Offset Current I IO Ta= <Ta< 7 ( 7 ) na 83. 88 Input Bias Current I B Ta= <Ta< 7 ( 7 ) R L 6Ω, Vo=±V OpenLoop Gain A v Ta= <Ta< 7 ( 7 ) 8 R L kω, Vo= ±V Open Loop Gain A v Ta= <Ta< 7 ( 7 ) 83. Supply Voltage Rejection Ratio SVR Rs kω,v + /V = ±9V to ±V 8 db Supply Current, all amp I CC no load 8 6 ma Common mode Input Voltage Range V ICM ± ±3 V Common Mode Rejection Ratio CMR R S kω 7 db Shortcircuit Output Currrent ( 8 ) I SC 7 ma 9 8 na db db ver.3
NJM3C PARAMETER SYMBOL CONDITION MIN. TYP. MAX. UNIT Maximum Output Voltage V OM R L 6Ω R L 6Ω, V + /V = ±8V ± ± ±3 ±6 V Input Resistance R IN 3 kω Output Resistance Ro.3 Ω Smallsignal Voltage Gain A V f=khz 67 db Gain Band Width Product GBP R L = 6Ω, C L = pf MHz Powerband Width Equivalent Input Noise Voltage Equivalent Input noise Current W PG e n I n R L = 6Ω, Vo= ±V R L = 6Ω, Vo= ±V, V + /V = ±8V f=3hz f=khz f=3hz f=khz 8.7.7 khz nv/ Hz pa Hz Equivalent Input Noise Voltage V NI f= to khz.6.8 μvrms Slew Rate SR 9 V/us Overshoot factor K O V G V=,V IN=mV PP,C L=pF,R L=6Ω % Channel Separation CS f=khz db (7) This parameter is not % test. (8) Temperature and /or supply voltages must be limited to ensure the maximum dissipation rating is not exceeded. APPLICATION INFORMATION Backtoback Diode Protection The input terminals of the NJM3C are protected from excessive differential voltage by backtoback diodes. However, When used in voltage follower circuit, the backtoback diode may break at power on. Therefore, put a currentlimiting resistance to input terminal as shown Fig.. INPUT R IN Fig. Caution to Thermal Design If the NJM3C junction temperature (Tj) exceeds guaranteed value ( degree) and the package power dissipation (P D ), there is possibility of the NJM3C deterioration or breakdown. The NJM3C supply current is higher (I CCMAX =6mA at V + /V =±V,Ta=+ C) and has positive temperature coefficient (Refer to Supply Current vs. Temperature characteristic). Therefore, you should carefully design with due attention to the supply voltage, the internal power dissipation and the ambient temperature. Power Dissipation P D [mw] 9 layer 8 7 6 layer 3 7 Ambient Temperature Ta[ ] ver.3 3
NJM3C Countermeasure to Excess Current by Parasitic Circuit When the NJM3C V+ is open (Fig.), the NJM3C may be burnt flowing the excess current by internal parasitic circuit(fig.3).the excess current generating condition is following: / Between input terminal and V voltage difference is higher. / Between input terminal and GND impedance is small. / V+ terminal is connected with low impedance. (Ietc is higher) V + (OPEN) Ietc V IN V + Icc+α Fig. Fig.3 V For countermeasure to excess current by parasitic circuit, NJRC recommends the following method. / prevent operating of a parasitic circuit by inserting a diode (Fig./). / limiting a parasitic circuit operation by inserting a resistance (kωor more) (Fig.). V + V + V + kω or more V V V Fig. Fig. Fig. ver.3
NJM3C TYPICAL CHARACTERISTICS Voltage Noise Density vs. Frequency THD+N vs. Output Voltage THD+N [%]. khz.. Hz khz.. Output Voltage [Vrms] V+/V=±V, GV=dB, RF=kΩ, RS=Ω, Ta=ºC 9 8 7 6 3 6 8 Voltage Gain LPF=kHz 6 33pF Phase CL=pF pf 6 Weighting JIS_A k Rs. k Source Resistance [Ω] k 6 8 Voltage Gain 6 Phase Ta=+ºC ºC 6 6 k k M M Frequency [Hz] 8 M Phase [deg] k M M Frequency [Hz] 8 M Maximum Output Voltage Swing vs. Frequency Maximum Output Voltage Swing [Vpp] V+/V=±V, RF=kΩ, RS=Ω RL=6Ω, CL=pF 6 k Voltage Gain vs. Frequency Voltage Gain [db] k V+/V=±V, RF=kΩ, RS=Ω RL=6Ω, Ta=ºC FLAT Voltage Gain [db] Equivalent Input Noise Voltage [μvrms] V+/V=±V, GV=dB, RF=kΩ, Ta=ºC ver.3 k Voltage Gain vs. Frequency Voltage Noise Density vs. Source Resistance k Frequency [Hz] Phase [deg] Equivalent Input Noise Voltage [nv/ Hz] V+/V=±V, GV=dB, RL=kΩ, Ta=ºC V+/V=±v, RL=6Ω, RF=kΩ, RS=Ω, Ta=ºC ±V 3 V+/V = ±V 3 ±3V k k Frequency [Hz] M
NJM3C TYPICAL CHARACTERISTICS 6 Supply Current vs. Supply Voltage G V =db Supply Current vs. Temperature G V =db Supply Current [ma] 8 6 Ta=+ºC ºC Supply Current [ma] V + /V =±V ±V ±3V ± ± ±6 ±8 ± ± ± ±6 ±8 ± ± Supply Voltage [V + /V ] 7 7 Input Offset Voltage vs. Supply Voltage V ICM =V Input Offset Voltage vs. Temperature V ICM =V Input Offset Voltage [mv] 3 ºC Ta=+ºC Input Offset Voltage [mv] 3 ±3V ±V V + /V = ±V 3 3 ± ± ± ± Supply Voltage [V + /V ] 7 7 Input Offset Voltage vs. CommonMode Input Voltage V + /V =±V 8 CMR vs. Temperature V + /V =±V, V ICM =±V Input Offset Voltage [mv] 3 ºC Ta=ºC 3 CommonMode Input Voltage [V] CommonMode Rejection Ratio [db] 6 8 6 7 7 6 ver.3
NJM3C TYPICAL CHARACTERISTICS 8 Input Bias Current vs. Temperature V ICM =V Input Offset Current vs. Temperature V ICM =V Input Bias Current [na] 6 ±V V + /V =±V ±3V Input Offset Current [na] V + /V ±V ±V ±3V 7 7 7 7 8 SVR vs. Temperature V + /V =±9V to ±V 6 Voltage Gain vs. Temperature V + /V =±V, R L =kω to V, V O =±V Supply Voltage Rejection Ratio [db] 6 8 6 7 7 Voltage Gain [db] 8 6 7 7 6 Voltage Gain vs. Temperature V + /V =±V, R L =6Ω to V, V O =±V Input Offset Voltage vs. Output Voltage V + /V =±V, R L =6Ω to V 3 Voltage Gain [db] 8 6 Input Offset Voltage [mv] ºC Ta=+ºC 3 7 7 Output Voltage [V] ver.3 7
NJM3C TYPICAL CHARACTERISTICS 6 Maximum Output Voltage vs. Load Resistance V + /V =±V, R L to V Maximum Output Voltage vs. Supply Voltage Ta=ºC Maximum Output Voltage [V] 8 8 Ta=+ºC ºC Ta=+ºC ºC Maximum Output Voltage [V] +V om V om R L =kω R L =6Ω 6 k k k Load Resistance [Ω] ± ± ± ± Supply Voltage [V + /V ] 6 Maximum Output Voltage vs. Temperature V + /V =±V, R L =6Ω Output Voltage vs. Output Current V + /V =±V Maximum Output Voltage [V] 8 8 +Vom Vom Output Voltage [V] Isource ºC ºC Isink Ta=+ºC Ta=+ºC 6 7 7 Output Current [ma]. Pulse Response (Rise) V + /V =±V, R L =6Ω, C L =33pF, Ta=ºC. Pulse Response (Fall) V + /V =±V, R L =6Ω, C L =33pF, Ta=ºC.. Input / Output Voltage [V].3.....3. V IN V OUT Input / Output Voltage [V].3.....3. V IN V OUT..8.6.....6.8 Time [μsec]..8.6.....6.8 Time [μsec] 8 ver.3
NJM3C TYPICAL CHARACTERISTICS Pulse Response (rise) V + /V =±V, V IN =VPP, Gv=dB, R L =6Ω, C L =pf Pulse Response (fall) V + /V =±V, V IN =VPP, Gv=dB, R L =6Ω, C L =pf Output Voltage [V] ºC Ta=+ºC Output Voltage [V] Ta=+ºC ºC Time [μsec] 6 Time [μsec] Channel Separation vs. Frequency V + /V =±V, Gv=dB R L =open, Ta=ºC, V O =Vpp Channel Separation [db] 6 8 B A A B 6 k k Frequency [Hz] ver.3 9
NJM3C PACKAGE OUTLINE UNIT : mm SOP8.9±. 3.9±. 6.±..7.±..±.3.±.7. S. M.7±.7 S.8±. ~ 7 [CAUTION] The specifications on this data book are only given for information, without any guarantee as regards either mistakes or omissions. The application circuits in this data book 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.3