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| NJM2172 OPERATIONAL AMPLIFIER WITH EVR s GENERAL DESCRIPTION The NJM2172 is single supply, dual OP-AMP with electric variable resistor (EVR), which contains buffer amplifier, OP-AMP, reference voltage circuit, EVR and EVR control circuit. + The reference is fixed around 1/2 V level internally, and only required few external parts. The A and B EVR is control separately, and amp drive up to 100(typ.) load. The NJM2172 is suitable for camcorder, CD, MD, and other audio signal process system. s FEATURES q Low Power Supply Voltage q Low Operating Current q A/Bch EVR adjust is separately q EVR range q Drivability q Bipolar Technology q Package Outline s BLOCK DIAGRAM s PACKAGE OUTLINE NJM2172V V+ = 2.7 to 5.5V Icc = 5.0mA typ. -3.0 to -95B 100 typ. SSOP14 s PIN CONFIGURATION 1: OP+INA 2: OP-INA 3: OPOUTA 4: EVROUTA 5: VCNTA 6: VCNTB + 7: V 8: GND 9: Vref 10:REFIN 11:EVROUTB 12:OPOUTB 13:OP-INB 14:OP+INB 14 13 12 Bch VCA 11 10 9 8 Bch OPAMP Bch EVR Ach EVR Ach OPAMP Ach VCA Bch EVR AMP VREF AMP Bch EVR Control Ach EVR Control Ach EVR AMP 1 2 3 4 5 6 7 -1- NJM2172 s ABSOLUTE MAXIMUM RATING PARAMETER RATINGS Supply Voltage Storage Temperature Range Operating Temperature Range Power Dissipation (Ta=25C) SYMBOL(UNIT) OTHERS +7.0 -50 to +150 -40 to +85 300 VDD (V) Tstg (C) Topr (C) PD (mW) SSOP14ONLY sERECTRICAL CHARACTERISTICS (V=3.5V, Crefin=10pF,Cref=1, f=1kHz, Ta=25C unless otherwise noted) q SUPPLY PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT TEST CIRCUIT Operating Current Reference Voltage ICC Vref RL= RL= 1.45 5.0 1.55 7.5 1.65 mA V 1 1 q OP-AMP SECTION PARAMETER Input Offset Voltage Input Bias Current Voltage Gain 1 Maximum Output Voltage Swing 1 Input Common Mode Voltage Range Output Noise Voltage Common Mode Rejection Ratio Supply Voltage Rejection Ratio Gain Bandwidth Product SYMBOL VIO IIB GV1 VOM1 VICM VON1 CMR SVR GB TEST CONDITION RS10k MIN. - TYP. 1.0 100 80 0 ( 1.0 ) -100 ( 10.0 ) 74 80 2 MAX. 6.0 300 (-) -90 UNIT mV nA dB dBV (Vrms) TEST CIRCUIT 3 3 3 2 1 3 3 - RL10k THD=1%, RL2.5k Rs=600 / A-Weighted RS10k RS10k 60 -3.0 ( 0.7 ) 0.55 to 2.55 V dBV 60 60 - ( 30.0 ) (Vrms) dB dB MHz -2- NJM2172 q EVR SECTION PARAMETER Voltage Gain 2 Total Harmonic Distortion EVR Gain Output Noise Voltage 2 Maximum Output Voltage Swing 2 Channel Separation (VCNT=2.7V, RL=100 unless otherwise noted) SYMBOL GV2 THD GEVR VNO2 TEST CONDITION VIN = -10dBV VIN = -10dBV VIN=-10dBV/VCNT=2.7Vto GND MIN. -6.0 80 -5.0 ( 0.56 ) - TYP. -3.0 0.15 90 -95 (18.0) -3.0 ( 0.71 ) -79 ( 110 ) 0.0 MAX. 0.0 1.0 -85 (56.0) -70 ( 320 ) 3.0 UNIT TEST CIRCUIT dB % dB dBV (Vrms) 1 2 1 1 2 1 RS = 600 / A - Weighted VOM2 THD = 1% dBV (Vrms) CS VIN=-10dBV / A - Weighted VCNT=1.5V,VINA=VINB=-50dBV f=1kHz, A/B ; *1 VCNT=2.0V,VINA=VINB=-50dBV f=1kHz, A/B ; *1 dBV (Vrms) A/B1 EVR Deviation A/B2 -3.0 dB -3.0 0.0 3.0 1 *1: Ach Amp with Bch=0dB -3- NJM2172 s TEST CIRCUIT 1 SW3 A-Weight 1 10k V VO1 VREF 2.5k SW4 SW1 SW5 a VI1 b 600 1 2 3 VCA 1 SW2 47 A-Weight VO2 100 4 10 1 V V 10 9 8 OPAMP EVR 1 Ach Bch 1 14 EVR Control EVR AMP VREF AMP 2 2 13 3 3 12 4 4 11 5 5 6 pin pin 7 5 VCNT A ICC V + 47 Fig.1 Test circuit 1 shows only Ach. -4- NJM2172 s TEST CIRCUIT 2 1 10k 2.5k SW6 1 10k 20k SW7 1 2 3 VCA VO3 V 47 VO4 100 4 10 1 V 10 9 8 VI2 OPAMP EVR 1 Ach Bch 1 14 EVR Control EVR AMP VREF AMP 2 2 13 3 3 12 4 4 11 5 5 6 pin pin 7 + 5 VCNT V 47 Fig.2 Test circuit 2 shows only Ach. -5- NJM2172 s TEST CIRCUIT 3 VCC 50 50 Ec 50k 10k 10k SW9 1 2 SW8 3 VCA 50k NULL 10k 10k Ek VF V 10 1 10 9 8 OPAMP EVR EVR AMP EVR Control VREF AMP 1 Ach Bch 1 14 2 2 13 3 3 12 5 5 6 pin pin 5 7 V + 47 Fig.3 Test circuit 3 shows only Ach. -6- NJM2172 s PIN INFORMATION Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pin Name OP+IN A OP-IN A OPOUTA EVROUT A VCNT A VCNT B + V GND VREF REFIN EVROUT B OPOUT B OP-IN B OP+IN B Function Ach OP-AMP + Input Ach OP-AMP - Input Ach OP-AMP Output / EVR Input Ach EVR Output Ach EVR Control Bch EVR Control Power Supply GND Internal Reference Output Internal Reference Input Bch EVR Output Bch OP-AMP Output / EVR Input Bch OP-AMP - Input Bch OP-AMP + Input -7- NJM2172 s EQUIVALENT CIRCUIT Term. No. Term. Name Equivalent Circuit V+ Terminal Voltage Note 1 2 13 14 OP+INA OP-INA OP-INB OP+INB 2,13 1,14 1.55V - V+ 100 3 12 OPOUTA OPOUTB 14k 1.55V 3,12 OPOUTA / OPOUTB Load: RL2.5k V+ 10 4 11 EVROUTA EVROUTB 4,11 1.55V EVROUTA / EVROUTB Load: RL100 -8- NJM2172 Term. No. Term. Name Equivalent Circuit V+ Terminal Voltage Note 5,6 5 6 VCNT A VCNT B 154k 26k - Input EVR control voltage V+ 40k 10 9 52k Terminal Voltage is 9 10 VREF REFIN - 52 / (52+40)x + (V - VBE) RL2K -9- NJM2172 s APPLICATION CIRCUIT 1 Voltage follower 10k 1 VIN 47 10 RL 1 2 3 4 10 9 8 1 VCA OPAMP EVR EVR Control EVR AMP VREF AMP 1 Ach Bch 1 14 2 2 13 3 3 12 4 4 11 5 5 6 pin pin 5 7 VCNT V + 47 Fig.4 Application circuit 1 shows only Ach. - 10 - NJM2172 s APPLICATION CIRCUIT 2 Invert Circuit (Gv=6dB) 10k 1 VIN 10k 20k 47 10 RL 1 1 2 3 VCA 4 10 9 8 OPAMP EVR EVR Control EVR AMP VREF AMP 1 Ach Bch 1 14 2 2 13 3 3 12 4 4 11 5 5 6 pin pin 5 7 VCNT V + 47 Fig.5 Application circuit 2 shows only Ach. - 11 - NJM2172 s TYPICAL CHARACTERISTICS Quiescent Current vs. Supply Voltage Ta=25C 8.0 Internal Reference Voltage vs. Supply Voltage Ta=25C 3.0 6.0 4.0 VREF [V] ICC [mA] 2.0 1.0 2.0 0.0 2.5 3.0 3.5 4.0 V+ [V] 4.5 5.0 5.5 0.0 2.5 3.0 3.5 4.0 V+ [V] Internal Reference Voltage vs. Temperature V+=3.5V 3.0 4.5 5.0 5.5 Quiescent Current vs. Temperature V+=3.5V 8.0 6.0 2.0 ICC [mA] 4.0 VREF [V] 1.0 0.0 -50 2.0 0.0 -50 0 Ta [C] 50 100 0 Ta [C] 50 100 Input Offset Voltage vs. Supply Voltage Ta=25C 3.0 2.0 300 Input Bias Current vs. Supply Voltage Ta=25C VIO [mV] 1.0 0.0 -1.0 -2.0 -3.0 2.5 3.0 3.5 4.0 V+ [V] 4.5 5.0 5.5 200 IB [nA] 100 0 2.5 3.0 3.5 4.0 V+ [V] 4.5 5.0 5.5 Input Offset Voltage vs. Temperature V+=3.5V 3.0 2.0 VIO [mV] 1.0 0.0 -1.0 -2.0 -3.0 -50 0 Ta [C] 50 100 0 -50 200 300 Input Bias Current vs. Temperature V+=3.5V IB [nA] 100 0 Ta [C] 50 100 - 12 - NJM2172 Voltage Gain 1 vs. Frequency V+=3.5V,Ta=25C,RL=2.5k 100 80 GV1 [dB] 60 40 20 0 0.001 GV1 [dB] 70 60 50 40 30 20 10 0 -10 -150 -210 10000 Gain -90 Phase -30 Voltage Gain 1 / Phase vs. Frequency V+=3.5V,Ta=25C,RL=2.5k,40dB Inverted Amp 30 0.01 0.1 1 10 100 1000 10000 0.1 1 10 [kHz] 100 1000 f [kHz] Voltage Gain1 vs. Temperature V+=3.5V 150 Common Mode Rejection Ratio vs. Temperature V+=3.5V 150 GV1 [dB] 50 CMR [dB] 100 100 50 0 -50 0 Ta [C] 50 100 0 -50 0 Ta [C] Total Harmonic Distortion (OPAMP) vs. Output Level (Temperature) V+=3.5V,f=1kHz,BW=400Hz-30kHz 50 100 Supply Voltage Rejection Ratio vs. Temperature V+=3.5V 150 10 1 SVR [dB] THD [%] 100 0.1 0.01 0.001 85C,25C 50 -40C 0 -50 0 Ta [C] 50 100 -60 -40 -20 Output Level [dBV] 0 20 - 13 - [ ] NJM2172 Maximum Output Voltage 1 vs. Supply Voltage RL=2.5k,f=1kHz,THD=1%,Ta=25C 10.0 10.0 Maximum Output Voltage 1 vs. Load Resistance V+=3.5V,f=1kHz,THD=1%,Ta=25C VOM [dBV] VOM [dBV] 0.0 0.0 -10.0 -10.0 -20.0 2.5 3.5 V+ [V] 4.5 5.5 -20.0 0.1 1 RL [k] 10 100 Voltage Gain 2 vs. EVR Control Voltage V+=3.5V,f=1kHz,Vin=-10dBV,Ta=25C 20 0 -20 -40 -60 -80 -100 -120 0 0.5 1 1.5 VCNT [V] 2 2.5 3 GV2 [dB] GV2 [dB] Voltage Gain 2 / Supply Voltage vs. EVR Control Voltage f=1kHz,Vin=-10dBV,Ta=25C 20 0 -20 -40 -60 -80 -100 -120 0 0.5 1 1.5 VCNT [V] 2 2.5 3 3.5V,5.5V 2.7V Voltage Gain 2 / Frequency vs. EVR Control Voltage V+=3.5V,Vin=-10dBV,Ta=25C 20 0 -20 GV2 [dB] GV2 [dB] Voltage Gain 2 / Temperature vs. EVR Control Voltage V+=3.5V,f=1kHz,Vin=-10dBV 20 0 -20 -40 -60 -80 25C -40C 85C -40 -60 -80 -100 -120 0 0.5 1 1.5 VCNT [V] 2 2.5 3 kHz,100Hz 10kHz -100 -120 0 0.5 1 1.5 VCNT [V] 2 2.5 3 - 14 - NJM2172 Total Harmonic Distortion (EVR) vs. Output Level (Frequency) V+=3.5V,Ta=25C 10 f=10kHz BW=22Hz-80kHz Total Harmonic Distortion (EVR) vs. Output Level (Temperature) V+=3.5V,f=1kHz,BW=400Hz-30kHz 10 THD [%] THD [%] 1 1 -40C 25C 0.1 f=100Hz,1kHz BW=22Hz-22kHz 0.1 85C 0.01 -60 -40 -20 Output Level [dBV] 0 20 0.01 -60 -40 -20 Output Level [dBV] 0 20 Output Noise Voltage 2 vs. EVR Control Voltage V+=3.5V,Ta=25C,A-Weighted 0 -20 VNO2 [dBV] 0 -20 -40 -60 -80 -100 -120 Output Noise Voltage 2 vs. Temperature V+=3.5V,VCNT=2.7V,A-Weighted VNO2 [dBV] -40 -60 -80 -100 -120 0 1 VCNT [V] 2 3 -50 0 Ta [C] 50 100 Maximum Output Voltage 2 vs. Supply Voltage RL=100,f=1kHz,THD=1%,Ta=25C 10.0 10.0 Maximum Output Voltage 2 vs. Load Resistance V+=3.5V,f=1kHz,THD=1%,Ta=25C VOM2 [dBV] -10.0 VOM2 [dBV] 2.5 3.5 V+ [V] 4.5 5.5 0.0 0.0 -10.0 -20.0 -20.0 0.01 0.1 RL [k] 1 10 - 15 - NJM2172 Channel Separation vs. EVR Control Voltage V+=3.5V,Vin=-10dBV,f=1kHz,Ta=25C,A-Weighted 0 -20 Channel Separation vs. Supply Voltage VCNT=2.7V,Vin=-10dBV,f=1kHz,Ta=25C,A-Weighted 0 -20 CS [dBV] CS [dBV] -40 -60 -80 -100 -120 0 1 VCNT [V] 2 3 A B B A -40 -60 -80 -100 -120 2.5 3 3.5 4 V+ [V] 4.5 5 5.5 B A A B Channel Separation vs. EVR Control Voltage V+=3.5V,Vin=-50dBV,f=1kHz,Ta=25C,A-Weighted 3 2 CS [dBV] 3 2 1 EVR Deviation vs. Supply Voltage VCNT=2.7V,Vin=-50dBV,f=1kHz,Ta=25C,A-Weighted 1 0 -1 -2 -3 0 1 VCNT [V] 2 3 AB [dB] 0 VCNT=1.5V,2V -1 -2 -3 2.5 3 3.5 4 V+ [V] 4.5 5 5.5 EVR Deviation vs. Frequency VCNT=2.7V,Vin=-50dBV,Ta=25C 3 2 AB [dB] EVR Deviation vs. Temperature V+=3.5V,Vin=-50dBV,f=1kHz,VCNT=2.7V,A-Weighted 3 2 1 0 -1 -2 -3 VCNT=2V VCNT=1.5V 1 AB [dB] 0 -1 -2 -3 0.01 VCNT=1.5V,2V 0.1 1 f [kHz] 10 100 -50 0 Ta [C] 50 100 [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. - 16 - |
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