NJM2749/2749A Low Offset, Low Drift Dual JFET Input Operational Amplifier ■GENRRAL DESCRIPTION The NJM2749/2749A is a Precision dual JFET input operational amplifier which includes low input offset voltage: 0.8mV (typ) / 2.5mV (max) and 6µV/°C typical offset drift. The NJM2749A is guaranteed 20µV/°C maximum offset drift to perform a 100% tested. The NJM2749/2749A have the following features: low bias current of 50pA (typ), high slew rate of 13V/µs (typ). These features are suitable for signal processing amplifiers of instrumentation, measurement and industrial applications such as sensor amplifier, current sensing and sample-and-hold circuit. ■FEATURES ●Input Offset Voltage Drift ■ PACKAGE OUTLINE NJM2749: ∆VIO/∆T= 6µV/°C typ. NJM2749A: ∆VIO/∆T=20µV/°C max. 2.5mV max. @Ta=25°C ~ 85°C 3.5mV max. @Ta= -40°C IB= 50pA typ. 200pA max. @Ta=25°C SR=13V/µs typ. @Ta=25°C Vopr= ±6.0V ~ ±16V Av=100dB typ. ●Input Offset Voltage ●Input Bias Current ●Slew Rate ●Operating Voltage ●Voltage Gain ●Bipolar Technology ●Dual channel ●Package Outline NJM2749D / 2749AD ( DIP8 ) NJM2749M / 2749AM ( DMP8 ) NJM2749E / 2749AE ( SOP8 ) NJM2749D, NJM2749AD : DIP8 NJM2749M, NJM2749AM : DMP8 NJM2749E, NJM2749AE : SOP8 JEDEC 150mil ■PIN CONFIGURATION (Top View) OUTPUT A 1 −INPUT A 2 +INPUT A 3 V− 4 A B 8 V+ 7 OUTPUT B 6 −INPUT B 5 +INPUT B NJM2749/2749A Ver.2009-01-13 -1- NJM2749/2749A ■ABSOLUTE MAXIMUM RATING PARAMETER (Ta=25°C unless otherwise specified) SYMBOL RATING UNIT Supply Voltage - V /V ±18 Common Mode Input Voltage VICM ±15 Differential Input Voltage VID ±30 V 500 [ DIP8 ], 300 [ DMP8,SOP8 ] mW Power Dissipation + PD V (Note1) V 430 [ DMP8 ], 640 [ SOP8 ] (Note2) mW 580 [ DMP8 ] ,1000 [ SOP8 ] (Note3) mW Operating Temperature Range Topr -40 ~ +85 °C Storage Temperature Range Tstg -50 ~ +125 °C (Note1) For supply voltage less than ±18V, the maximum input voltage is equal to the supply voltage. (Note2) Mounted on the EIA/JEDEC standard board (76.2×114.3×1.6mm, two layer, FR-4). (Note3) Mounted on the EIA/JEDEC standard board (76.2×114.3×1.6mm, four layer, FR-4). ■RECOMMENDED OPERATING VOLTAGE PARAMETER Supply Voltage (Ta=25°C) SYMBOL + RATING MIN. TYP. MAX. UNIT ±6 - ±16 V - V /V ■ELECTRONIC CHARACTERISTICS •DC CHARACTERISTICS (V+/V-=±15V, Ta=-40 to +85°C (Note4) unless otherwise specified) PARAMETER Input Offset Voltage Drift SYMBOL ΔVIO/ΔT CONDITION NJM2749A NJM2749 (Note5, 6) MIN. TYP. MAX. - 6 20 - 6 - UNIT µV/°C Input Offset Voltage1 VIO1 RS=50Ω, Ta=+85°C (Note6, 7) - 0.7 2.5 mV Input Offset Voltage2 VIO2 RS=50Ω, Ta=+25°C (Note6, 7) - 0.8 2.5 mV Input Offset Voltage3 VIO3 RS=50Ω, Ta=−40°C (Note6, 7) - 1.0 3.5 mV Common Mode Rejection Ratio CMR VICM=±10V (Note8) 76 92 - dB + − Supply Voltage Rejection Ratio SVR V /V =±6V ~ ±16V (Note7, 9) 80 100 - dB Input Common Mode Voltage Range 1 VICM1 CMR≥76dB (Note10) +10 +14.5 - V Input Common Mode Voltage Range 2 VICM2 CMR≥76dB (Note10) - −11 −10 V Input Bias Current 1 IB1 Ta=+25°C (Note7) - 50 200 pA Input Bias Current 2 IB2 Ta=+85°C (Note7) - - 4 nA Input Offset Current 1 IIO1 Ta=+25°C (Note7) - 25 100 pA Input Offset Current 2 IIO2 Ta=+85°C (Note7) - - 2 nA Voltage Gain 1 Av1 RL=2kΩ, Vo=±10V, Ta=+25°C 88 100 - dB Voltage Gain 2 Av2 RL=2kΩ, Vo=±10V 82 100 - dB Maximum Output Voltage 1 VOM1 RL=10kΩ ±12 ±13.5 - V Maximum Output Voltage 2 VOM2 RL=2kΩ ±10 ±11.5 - V - 3.8 5.6 mA Supply Current -2- Icc Voltage Follower, RL=∞ (Note7) Ver.2009-01-13 NJM2749/2749A (Note4) These devices are measured under three temperature conditions of Ta=−40°C, +25°C, +85°C. (Note5) Temperature coefficient is calculated by specified change in offset voltage. (Changes Ta=+25°C to −40°C and Ta=+25°C to +85°C) NJM2749A is guaranteed maximum specification because these are 100% tested to operating temperature range. NJM2749 is guaranteed only typical specification. (Note6) Written by the absolute rate. (Note7) Measured at VICM=0V (Note8) CMR is calculated by specified change in offset voltage. (VICM=0V to +10V and VICM=0V to −10V) (Note9) SVR is calculated by specified change in offset voltage. (V+/V−=±6V to ±16V) (Note10) VICM is input common mode voltage when tested meets specified change in offset voltage is CMR≥76dB. (A point of reference is offset voltage of VICM=0V) (V+/V−=±15V, Ta=+25°C unless otherwise specified) •AC CHARACTERISTICS PARAMETER MIN. TYP. MAX. UNIT f=10kHz − 2.2 − MHz fT AV=+100, RS=100Ω, RL=∞, CL=10pF − 2 − MHz Phase Margin ΦM AV=+100, RS=100Ω, RL=∞, CL=10pF − 55 − deg Input Noise Voltage1 VNI1 f=1kHz, AV=+100, RS=100Ω, RL=∞ − 20 − nV/√Hz Input Noise Voltage2 VNI2 RIAA, RS=2.2kΩ, 30kHz, LPF − 2.5 − µVrms Total Harmonic Distortion THD f=1kHz, AV=+10, RS=1kΩ, RL=∞, VO=5Vrms − 0.005 − % F=1kHz, AV=-100, RS=1kΩ, RL=10kΩ − 120 − dB Gain Bandwidth Product Unity Gain Frequency Channel Separation SYMBOL GB CS CONDITION (V+/V-=±15V, Ta=+25°C unless otherwise specified) •TRANSIENT CHARACTERISTICS PARAMETER SYMBOL CONDITION MIN. TYP. MAX. UNIT Positive Slew Rate +SR AV=+1, VIN=2Vpp, RL=10kΩ, CL=10pF − 14 − V/μs Negative Slew Rate -SR AV=+1, VIN=2Vpp, RL=10kΩ, CL=10pF − 12 − V/μs Ver.2008-01-13 -3- NJM2749/2749A ■IMPORTANT CONSIDERATIONS FOR USE OF NJM2749/2749A •Supply Current When Ta≥25°C, Power Dissipation PD is limited by junction temperature (TJ=125°C) So maximum supply current is influenced by package, mounting board (board size, area of cupper foil), Mounting condition and etc. Following DMP8 Power Dissipation characteristic is a characteristic when mounted the following conditions supply. • Two layer board: EIA/JEDEC 76.2×114.3×1.6mm, FR-4 • Four layer board: EIA/JEDEC 76.2×114.3×1.6mm, FR-4 Please refer to "Method of measuring the package thermal characteristic" published in our company web site for detailed information on the thermal characteristic. Maximum Power Dissipation − Ambient Temperature (DMP8) 600 500 EIA/JEDEC 4-Layer EIA/JEDEC 2-Layer 400 300 Package Only 200 (DIP8) 600 Power Dissipation P D [mW] Power Dissipation P D [mW] Maximum Power Dissipation − Ambient Temperature 100 0 500 400 300 200 100 0 0 20 40 60 80 100 Ambient Temperature [ºC] 0 20 40 60 80 100 Ambient Temperature [ºC] Maximum Power Dissipation - Ambient Temperature (EMP8) Power Dissipation PD [mW] 1200 EIA/JEDEC 4-Layer 1000 800 EIA/JEDEC 2-Layer 600 400 Unit 200 0 0 -4- 20 40 60 80 Ambient Temperature [ºC] 100 Ver.2009-01-13 NJM2749/2749A ■IMPORTANT CONSIDERATIONS FOR USE OF NJM2749/2749A •THE OSCILLATION WITH A CAPACITIVE LOAD NJM2749/2749A tends to oscillate easily when it uses voltage-follower, and driving capacitive load. The figure below is a “Voltage Gain - Frequency characteristic” in the Voltage-Follower. (It is not the one to guarantee the characteristic of the product.) Especially, it becomes easy to oscillate in the condition that the input voltage (output voltage) is near the minus supply voltage side and the condition with large output sink current. We will recommend use by some circuit gains. Voltage Gain − Frequency (V /V =±15V, Voltage Follower, CL=100pF, VO=−10V, Ta=25ºC) + 15 10 Voltage Gain [dB] Voltage Gain [dB] 15 Voltage Gain − Frequency (V+/V−=±15V, Voltage Follower, CL=100pF, ISINK=1mA, Ta=25ºC) VO=-10V 5 VO=0V 0 − 10 ISINK=5mA ISINK=2mA 5 ISINK=1mA 0 VO=+10V -5 -5 10k 100k 1000k 1M Frequency [HZ] 10k 10000k 10M 100k 1000k 1M Frequency [HZ] 10000k 10M •INPUT COMMON MODE VOLTAGE RANGE In this product, the input offset voltage drift is measured based on the input offset voltage at VICM=0V, and the input voltage range that satisfies the common mode rejection ratio 76dB is defined as the input common mode voltage range. As an electric characteristic, VICM=−10V~+10V at Supply Voltage V+/V−=±15V is guaranteed. It becomes below formula about the input common mode voltage range when the supply voltage changes. +VICM: (V+ supply) − 5 [V] · · · reference −VICM: (V− supply) + 5 [V] · · · reference This figure below is “Input common mode voltage range – Supply voltage characteristics”. (It is not the one to guarantee the characteristic of the product.) + VICM is limited by the absolute maximum rating (V+ supply) within the input common mode voltage range. Moreover, −VICM tends to rise by lowering of the supply voltage. Common Mode Input Voltage Range (+VICM) − Supply Voltage (Ta=25ºC, CMR=76dB) (Ta=25ºC, CMR=76dB) 5.0 (−VICM)−(V−Supply) [V] 1.0 0.0 -1.0 + (V Supply)−(+VICM) [V] Common Mode Input Voltage Range (−VICM) − Supply Voltage -2.0 4.0 3.0 2.0 5 10 15 Supply Voltage V+/V− [V] 20 5 10 15 20 Supply Voltage V+/V− [V] •OTHERS For the NJM2749/2749A are high-precision products, a surface leak by dirt and/or condensation on package can have a detrimental effect on precise characteristics of these products. You should pay close attention to environment of storage and usage. Ver.2008-01-13 -5- NJM2749/2749A ■TYPICAL CHARACTERISTICS Input Offset Voltage Temperature Coefficient Distribution (V+/V-=±15V, Ta=-40ºC→+25ºC) (V+/V-=±15V, Ta=+25ºC→+85ºC) 300 Number Of Units 300 200 100 100 Distribution [μV/ºC] Input Offset Voltage − Ambient Temperature Input Offset Voltage Drift [μV] Input Offset Voltage [μV] 0 -1000 -2000 -25 0 25 50 75 20 16 12 8 4 0 -4 -8 Ta=-40ºC 0 Ta=85ºC Ta=25ºC -500 100 5 10 15 20 Ambient Temperature [ºC] Supply Voltage V+/V− [V] Input Offset Voltage Drift − Common Mode Input Voltage Input Offset Voltage Drift − Common Mode Input Voltage (V+/V−=±15V, Ta=25ºC, VICM=0V of Reference) (V+/V−=±15V) 1000 Input Offset Voltage Drift [μV] 1000 Input Offset Voltage Drift [μV] 500 -1000 -50 500 0 -500 -1000 500 0 Ta=-40ºC Ta=25ºC -500 Ta=85ºC -1000 -15 -6- (V+/V−=±15V of Reference) 1000 1000 Distribution [μV/ºC] Input Offset Voltage Drift − Supply Voltage (V+/V−=±15V) 2000 -12 -20 20 16 12 8 4 0 -4 -8 -12 -16 0 -20 0 200 -16 Number Of Units Input Offset Voltage Temperature Coefficient Distribution -10 -5 0 5 10 Common Mode Input Voltage [V] 15 -15 -10 -5 0 5 10 15 Common Mode Input Voltage [V] Ver.2009-01-13 NJM2749/2749A ■TYPICAL CHARACTERISTICS Common Mode Rejection Ratio − Ambient Temperature (V+/V−=±15V, VICM=0V → −10V) 100 100 90 80 70 0 25 50 75 100 -50 -25 0 25 50 75 100 125 Ambient Temperature [ºC] Ambient Temperature [ºC] Common Mode Rejection Ratio − Frequency Supply Voltage Rejection Ratio (+Supply) − Frequency (Input Ripple Voltage=1VPP, V+/V−=±15V, AV=60dB) (Ripple Voltage=1VPP, V+/V−=±15V, AV=40dB) 120 Ta=-40°C 100 80 Ta=25°C Ta=-40°C 60 Ta=85°C 40 20 80 Ta=25°C 60 40 Ta=85°C 20 0 0 0k 10 0k 100 1k 10k 100k 0k 10 1000k 1M 0k 100 1k 10k 100k 1000k 1M Frequency [kHz] Frequency [Hz] Common Mode Rejection Ratio − Frequency Supply Voltage Rejection Ratio (−Supply) − Frequency + − (Input Ripple Voltage=1VPP, V /V =±6V, AV=60dB) (Ripple Voltage=1VPP, V+/V−=±15V, AV=40dB ) 120 Supply Voltage Rejection Ratio SVR [dB] Common Mode Rejection Ratio CMR [dB] 80 125 Supply Voltage Rejection Ratio SVR [dB] Common Mode Rejection Ratio CMR [dB] -25 100 120 90 70 -50 120 (V+/V−=±6V → ±16V) 110 Supply Voltage Rejection Ratio SVR [dB] 110 Common Mode Rejection Ratio CMR [dB] Supply Voltage Rejection Ratio − Ambient Temperature 100 100 Ta=25°C Ta=-40°C 80 60 Ta=85°C 40 20 0 80 Ta=-40°C Ta=25°C 60 40 Ta=85°C 20 0 0k 10 0k 100 1k 10k Frequency [Hz] Ver.2008-01-13 100k 1000k 1M 0k 10 0k 100 1k 10k 100k 1000k 1M Frequency [Hz] -7- NJM2749/2749A ■TYPICAL CHARACTERISTICS Input Bias Current − Supply Voltage Input Bias Current − Ambient Temperature + (Ta=25ºC, VICM=0V) 100 (V /V =±15V, VICM=0V) Input Bias Current IB [pA] 10000 Input Bias Current IB [pA] − 1000 100 10 50 0 1 -50 -25 0 25 50 75 100 5 125 10 Ambient Temperature [ºC] Input Bias Current − Common Mode Input Voltage Input Offset Current IIO [pA] Input Bias Current IB [pA] 0 -10 -5 0 5 10 200 0 -200 -400 15 -50 -25 0 25 50 75 100 Common Mode Input Voltage VICM [V] Ambient Temperature [ºC] Supply Current − Ambient Temperature Supply Current − Supply Voltage (V+/V−=±15V, Voltage Follower, RL=open) 5 4 3 2 125 (Voltage Follower, RL=open) 6 Supply Current ICC [mA] 6 Supply Current ICC [mA] 400 -600 -15 5 Ta=-40ºC 4 Ta=85ºC 3 Ta=25ºC 2 -50 -25 0 25 50 75 Ambient Temperature [ºC] -8- (V+/V−=±15V, VICM=0V) 600 50 20 Input Offset Current − Ambient Temperature (V+/V−=±15V, Ta=25ºC) 100 15 Supply Voltage V+/V− [V] 100 125 5 10 15 + 20 − Supply Voltage V /V [V] Ver.2009-01-13 NJM2749/2749A ■TYPICAL CHARACTERISTICS Maximum Output Voltage (+VOM) − Output Source Current Output Saturation Voltage (+VOS) − Supply Voltage (V+/V−=±15V) 15 (Ta=25ºC) 1.5 14 ISOURCE=10mA Output Saturation Voltage +VOS [V] Maximum Output Voltage +VOM [V] +VOS=(V+) - (+VOM) Ta=-40ºC 1.0 13 Ta=85ºC Ta=25ºC 12 11 ISOURCE=2mA 0.0 0 10 20 30 Output Source Current ISOURCE [mA] 40 5 (Ta=25ºC) 2.5 -VOS=(-VOM) - (V-) Output Saturation Voltage −VOS [V] Maximum Output Current −VOM [V] 20 − Output Saturation Voltage (−VOS) − Supply Voltage Ta=85ºC Ta=25ºC -11 15 Supply Voltage V /V [V] (V+/V−=±15V) -10 10 + Maximum Output Voltage (−VOM) − Output Sink Current ISINK=10mA 2.0 -12 Ta=-40ºC 1.5 -13 -14 ISINK=5mA ISINK=2mA 1.0 0 10 20 30 Output Sink Current ISINK [mA] 40 5 15 20 − Supply Voltage V /V [V] Unity−Gain Frequency − Ambient Temperature (V+/V−=±15V, VO=±10V, RL=2kΩ) (V+/V−=±15V, 40dBAMP, CL=10pF) 3 Unity−Gain Frequency fT [MHz] 130 10 + Voltage Gain − Ambient Temperature Voltage Gain AV [dB] ISOURCE=5mA 0.5 120 110 100 90 2.5 2 1.5 1 -50 -25 0 25 50 75 Ambient Temperature [ºC] Ver.2008-01-13 100 125 -50 -25 0 25 50 75 100 125 Ambient Temperature [ºC] -9- NJM2749/2749A ■TYPICAL CHARACTERISTICS 50 45 40 0 Phase 20 -45 10 -90 0 -10 1k 10k 100k 1000k 1M Gain 0 Phase 20 -45 10 -90 -135 0 -135 -180 10000k 10M -10 1 10 100 1000 1M -180 10000 10M Frequency [kHz] Voltage Gain − Frequency Voltage Gain − Frequency (V+/V−=±15V, Voltage Follower, RL=2kΩ, Ta=25ºC) (V+/V−=±6V, Voltage Follower, RL=2kΩ, Ta=25ºC) 5 CL=100pF CL=47pF 0 10 Voltage Gain AV [dB] Voltage Gain AV [dB] 45 30 Frequency [Hz] 10 90 Phase φ [deg] 30 90 Voltage Gain AV [dB] Gain 40 Voltage Gain AV [dB] Gain/Phase − Frequency (V+/V−=±6V, 40dBAMP, CL=100pF, Ta=25ºC) Phase φ [deg] 50 Gain/Phase − Frequency (V+/V−=±15V, 40dBAMP, CL=100pF, Ta=25ºC) CL=100pF 5 CL=47pF 0 CL=10pF CL=10pF -5 -5 0M 100k 1M 10M 0M 100k Frequency [Hz] 10M Frequency [Hz] Voltage Gain − Frequency Voltage Gain − Frequency (V+/V−=±15V, Voltage Follower, RL=2kΩ, CL=100pF) (V+/V−=±6V, Voltage Follower, RL=2kΩ, CL=100pF) 5 Ta=-40ºC 0 Ta=25ºC 10 Voltage Gain AV [dB] Voltage Gain AV [dB] 10 1M Ta=-40ºC 5 Ta=25ºC Ta=85ºC 0 Ta=85ºC -5 0M 100k -5 1M Frequency [Hz] - 10 - 10M 0M 100k 1M 10M Frequency [Hz] Ver.2009-01-13 NJM2749/2749A ■TYPICAL CHARACTERISTICS Slew Rate − Supply Voltage (Voltage Follower, VO=±1V, RL=2kΩ, Ta=25ºC) 20 Slew Rate SR [V/μs] Slew Rate SR [V/μs] 20 Slew Rate − Ambient Temperature (V+/V−=±15V, Voltage Follower, VO=±1V, RL=2kΩ) 15 +SR 10 -SR 5 +SR 15 -SR 10 5 -50 -25 0 25 50 75 100 125 5 THD+N − Output Voltage (RF=1.8kΩ, V+/V−=±15V, AV=+10, RL=open, Ta=25ºC) 1 20kHz 20kHz 1kHz 0.01 0.1 1kHz 0.01 20Hz 20Hz 0.001 0.01 0.1 1 0.001 0.01 10 Output Voltage VO [Vrms] 0.1 1 10 Output Voltage VO [Vrms] THD+N − Frequency THD+N − Frequency (RF=9kΩ, V+/V−=±15V, AV=+10, RL=open, Ta=25ºC) (RF=1.8kΩ, V+/V−=±15V, AV=+10, RL=open, Ta=25ºC) 0.1 1 THD+N [%] THD+N [%] 20 THD+N − Output Voltage 0.1 1 15 (RF=9kΩ, V+/V−=±15V, AV=+10, RL=open, Ta=25ºC) THD+N [%] THD+N [%] 1 10 Supply Voltage V+/V− [V] Ambient Temperature [ºC] VO=7.07Vrms 0.01 0.1 VO=7.07Vrms 0.01 VO=5Vrms VO=5Vrms 0.001 0.001 0k 10 0k 100 1k Frequency [Hz] Ver.2008-01-13 10k 100k 0k 10 0k 100 1k 10k 100k Frequency [Hz] - 11 - NJM2749/2749A ■TYPICAL CHARACTERISTICS Equivalent Input Noise Voltage − Frequency (V+/V−=±15V, 40dBAMP, RS=100Ω, Ta=25ºC) Equivalent Input Noise Voltage VNI [nV/√Hz] 60 50 40 30 20 10 0 1 10 100 1000 1k 10000 10k Frequency [Hz] [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. - 12 - Ver.2009-01-13