AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Description Pin Assignments The AP358 series consists of two independent, high gain, internally frequency compensated operational 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. ( Top View ) OUTPUT 1 1 INVERTING INPUT 1 NON-INVERTING INPUT 1 3 GND 4 OUTPUT 1 1 INVERTING INPUT 1 NON-INVERTING INPUT 1 2 3 GND 4 • • • • • • • • • • • • • • • Notes: 5 NON-INVERTING INPUT 2 AP358 8 V+ 7 OUTPUT 2 6 INVERTING INPUT 2 5 NON-INVERTING INPUT 2 Eliminate the need for dual supplies Compatible with all forms of logic Two internally compensated op amps Low power drain suitable for battery operation Allows direct sensing near GND and VOUT also goes to GND Unique Characteristics • Single supply: 3V to 32V • Or dual supplies: ±1.5V to ±16V + Large output voltage swing: 0V to V - 1.5V Lead Free packages: SOP-8L and PDIP-8L SOP-8L and PDIP-8L: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1) OUTPUT 2 INVERTING INPUT 2 PDIP-8L Application • • 7 6 ( Top View ) Features • AP358 V+ SOP-8L 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 AP358 series 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 supply. Internally frequency compensated for unity gain Large dc voltage gain: 100 dB Very low supply current drain (500μA)-essentially independent of supply voltage Wide bandwidth (unity gain): 1 MHz (temperature compensated) Input common-mode voltage range includes ground Differential input voltage range equal to the power supply voltage Low input offset voltage: 2mV Wide power supply range: 2 8 • • In the linear mode the input common-mode voltage range includes ground and the output voltage can also swing to ground, even though operated from only a single power supply voltage. The unity gain cross frequency is temperature compensated. The input bias current is also temperature compensate. 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. AP358 Document number: DS31007 Rev. 6 - 2 1 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit (V+=5.0VDC) Non-Inverting DC Gain ( 0V Output ) * +VIN +5V + +VO - VO (Volts) 1/2 AP358 R2 1M R1 10K GAIN=1+ VIN (mV) R 100K R1 910K + R 100K R1 =101(as shown) *R not needed due to temperature independent IIN +V1 +V2 R2 R 100K R 100K 1/2 AP358 R2 100K VO - +V3 +V4 V+ 1/2 AP358 R3 91K VO + +VIN RL R 100K R 100K VO=0 VDC for VIN = 0 VDC AV =10 Where: VO=V1+V2-V3-V4 (V1+V2) > (V3+V4) to keep VO > 0 VDC Power Amplifier DC Summing Amplifier (VIN'S > 0 VDC and VO > 0 VDC) R1 100K R2 100K R7 470K 1/2 AP358 + VIN C2 330pF - R4 10M R3 100K 1/2 AP358 C1 330pF R5 470K + - VO R8 100K 1/2 AP358 fO = 1KHz Q = 50 + R6 100K C3 10μF + V+ "BI-QUAD" RC Active Bandpass Filter AP358 Document number: DS31007 Rev. 6 - 2 2 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit (Continued) (V+=5.0VDC) V+ + R1* 0.1 + 2V R3 - 2K R1 2K IL VL R4 2K RL 2V - + R2 100 - 1/2 AP358 - 1/2 AP358 I1 + R2 3K I2 1V(IL) 1mA VO R3 1K I1 = I2 VO = 0.1A *(Increase R1 for IL small) VL < V+ -2V Current Monitor Fixed Current Sources V+ - 20mA 1/2 AP358 82 30mA 1/2 AP358 β > 20 600mA 100 + + LED Driver Lamp Driver - 1/2 AP358 RL 240 + +VIN Driving TTL R1 1M IN914 R2 100K IN914 VO 1/2 AP358 + VO = VIN Voltage Follower R1 100K C 0.001μF 0.001μF VO 1/2 AP358 R3 100K V+ VO 1/2 AP358 + R5 100K R2 100K + 0 V+ + R4 100K + 0 R3 100K R4 100K Squarewave Oscillator Pulse Generator AP358 Document number: DS31007 Rev. 6 - 2 3 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit (Continued) (V+=5.0VDC) IB - + 1/2 AP358 +VIN C 1μF + ZOUT 2IB 2N929* ZIN VO 1/2 AP358 IB 0.001μF *hi β AT 100 nA IB (POLYCARBONATE OR POLYETHYLENE) + 3R 3M 2IB HIGH ZIN LOW ZOUT 1/2 AP358 - R IM AUX AMP INPUT CURRENT COMPENSATION IB Low Drift Peak Detector R1 30K IN914 R2 0.01μF 150K R3 100K V+ IO + +VIN 1/2 AP358 - VO 1/ 2 AP358 + 0 + R5 100K IO =0.1 amp / volt VIN (increase RE for IO small) R4 100K RL 10 High Compliance Current Sink Pulse Generator 0.05μF R 100K +VC* 51K - 1/2 AP358 + R/2 50K 1/2 AP358 OUTPUT1 V+/2 51K + 51K 100K OUTPUT2 10K *WIDE CONTROL VOLTAGE RANGE: 0 VDC < VC < 2 (V+ -1.5VDC) Voltage Controlled Oscillator (VCO) AP358 Document number: DS31007 Rev. 6 - 2 4 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit (Continued) (V+=5.0VDC) Rf 10K R1 CIN 10K - +VIN - + R1 10K 1/2 AP358 + +VREF VO CO VIN 1/2 AP358 R2 10M V+ AV= R1 100K R1 1M + VR - R R3 1M + R3 1M + C2 10μF Document number: DS31007 Rev. 6 - 2 R5 100K R4 100K - fO 1/2 AP358 VO + +V2 R4 (CMRR depends on this R3 resistor ratio match) R4 V O = (1+ )(V2-V1) R3 As Shown: VO = 2(V2-V1) For 0 + +V1 R3 100K V O R4 100K R3 100K 1/2 AP358 VO DC Coupled Low-Pass RC Active Filter AP358 RL 10K AV=11(As Shown) R2 AV=1+ R1 V+ R1 100K 1/2 AP358 fO = 1KHz Q=1 AV=2 3 Vpp R2 100K + - RB 6.2K R4 100K 0 VO AC Coupled Non-Inverting Amplifier C1 0.01μF C2 0.01μF 1/2 AP358 + Ground Referencing a Differential Input Signal VIN - CIN R4 1M VIN R2 16K (As shown, AV=10) CO V O=VR R1 16K Rf R1 R2 1M C1 0.1μF VO 1/2 AP358 +VCM RL 10K AC Coupled Inverting Amplifier Comparator with Hysteresis + 3 Vpp R3 100K + C1 10μF R2 1M RB 6.2K + R2 100K 0 VO R1 R2 = High Input Z, DC Differential Amplifier 5 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Single-Supply Circuit (Continued) (V+=5.0VDC) C1 0.01μF R1 390K V IN C2 0.01μF R4 390K R6 120K R3 680 R2 620K R5 39K 1/2 AP358 - + 1/2 AP358 R7 100K + C3 10μF VO + R8 100K V+ f O = 1.12KHz Q = 25 Bandpass Active Filter R2 100K - - R3 R4 100K 100K IIN 1/2 AP358 +V1 R1 2K IB +VIN + 1/2 AP358 + IB GAIN ADJUST 1/2 AP358 R5 100K VO 2N929* *hi β AT 50 nA + - 0.001μF 2R 3M 1/2 AP358 R6 100K + R7 100K If R1 = R5 & R3 = R4 = R6 = R7 (CMRR depends on match) 2R2 )(V2-V1) V O =( 1+ R1 As Shown: VO = 101(V2-V1) High Input Z Adjustable-Gain DC Instrumentation Amplifier AP358 Document number: DS31007 Rev. 6 - 2 IB IB +V2 +VO R 1.5M IB 1/2 AP358 + AUX AMP INPUT CURRENT COMPENSATION Using Symmetrical Amplifiers to Reduce Input Current (General Concept) 6 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Functional Block Diagram OUTPUT 1 INVERTING INPUT 1 1 8 V+ 2 7 OUTPUT 2 A NON-INVERTING INPUT 1 GND - 3 B + + - 6 5 4 INVERTING INPUT 2 NON-INVERTING INPUT 2 Voltage Controlled Oscillator (VCO) R 100K 0.05μF +VC* - 1/2 AP358 51K + 1/2 AP358 V+/2 51K R/2 51K OUTPUT1 + 51K 100K OUTPUT2 10K Pin Descriptions Pin Name OUTPUT 1 Pin # 1 INVERTING INPUT 1 2 Channel 1 Inverting Input NON-INVERTING INPUT 1 3 Channel 1 Non-inverting Input GND NON-INVERTING INPUT 2 4 5 Ground Channel 2 Non-inverting Input INVERTING INPUT 2 6 Channel 2 Inverting Input OUTPUT 2 V+ 7 8 Channel 2 Output Chip Supply Voltage AP358 Document number: DS31007 Rev. 6 - 2 Description Channel 1 Output 7 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Absolute Maximum Ratings Symbol VCC VIN PD Parameter Supply voltage Differential Input Voltage Input Voltage Power Dissipation (Note 2) Output Short-Circuit to GND (One Amplifier) (Note 3) TOP TST Notes: V+ < 15V and TA=25oC Input Current (VIN < -0.3V) (Note 4) Operating Temperature Range Storage Temperature Range Rating Unit 32 32 -0.3 to +32 600 Continuous V V V mW 40 mA 0 to +70 -65 to +150 o C C o 2. For operating at high temperatures, the AP358 must be derated based on a +125°C maximum junction temperature and a thermal resistance of 120°C/W for DIP and 189°C/W for Small Outline package, which applies for the device soldered in a printed circuit board, operating in a still air ambient. The dissipation is the total of both amplifiers—use external resistors, where possible, to allow the amplifier to saturate or to reduce the power which is dissipated in the integrated circuit. + 3. Short circuits from the output to V can cause excessive heating and eventual destruction. When considering short circuits + to ground, the maximum output current is approximately 40mA independent of the magnitude of V . At values of supply voltage in excess of +15V, continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction. Destructive dissipation can result from simultaneous shorts on all amplifiers. 4. This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output + voltages of the op amps to go to the V voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than -0.3V (at 25°C). AP358 Document number: DS31007 Rev. 6 - 2 8 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Electrical Characteristics (TA = 25oC, V+ = +5.0V, unless otherwise stated) (Note 5) Symbol VIO IB IIO VICM IS AV CMRR PSRR Notes: Parameter Input Offset Voltage Conditions TA = 25oC, (Note 6) IIN(+) or IIN(−), TA = 25°C, Input Bias Current VCM = 0V, (Note 7) IIN(+) - IIN(−),VCM = 0V, Input Offset Current TA = 25°C V+ = 30V, (Note 8) Input Common-Mode Voltage Range TA = 25°C RL = ∞ on V+ = 30V Supply Current All Op Over Full Temperature Range V+ = 5V Amps V+ = 15V, TA = 25°C, Large Signal Voltage Gain RL > 2kΩ, (For VO = 1V to 11V) TA = 25°C, VCM = 0V to Common-Mode Rejection Ratio V+ -1.5V V+ = 5V to 30V, Power Supply Rejection Ratio TA = 25°C f = 1KHz to 20 KHz, TA = 25°C Amplifier-to-Amplifier Coupling (Input Referred), (Note 9) Min - Typ. 2 Max 7 Unit mV - 45 250 nA - 5 50 nA 0 - V+ -1.5 V - 1 2 - 0.5 1.2 25 100 - V/mV 65 85 - dB 65 100 - dB - -120 - dB mA 5. The AP358 temperature specifications are limited to 0°C < TA < +70°C. + + 6. VO ≅ 1.4V, RS = 0Ω with V from 5V to 30V; and over the full input common-mode range (0V to V -1.5V) at 25°C. 7. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so no loading change exists on the input lines. 8. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V (at25°C). + The upper end of the common-mode voltage range is V -1.5V (at 25°C), but either or both inputs can go to +32V without + damage, independent of the magnitude of V . 9. Due to proximity of external components, insure that coupling is not originating via stray capacitance between these external parts. This typically can be detected as this type of capacitance increases at higher frequencies. AP358 Document number: DS31007 Rev. 6 - 2 9 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Electrical Characteristics (Continued) Symbol Parameter Conditions VIN = 1V, VIN+ = 0V, V+ = 15V, VO = 2V, TA = 25°C VIN- = 1V, VIN+ = 0V, V+ = 15V, VO = 200mV, TA = 25°C VIN+ = 1V, VIN- = 0V, V+ = 15V, VO = 2V, TA = 25°C TA = 25°C, (Note 3) V+ = 15V RL = 2kΩ, TA = 25oC RL = 10kΩ, TA = 25oC RL = 10kΩ, TA = 25oC Min Typ. Max Unit 10 20 - mA 20 70 - μA 20 40 - mA - 40 60 mA 26 27 - 28 5 20 V V mV - ISINK Sink Output Current ISOURCE ISC VOH Source Short Circuit to Ground Output Voltage Swing (V+=5V) VOL Notes: (V+=30V) + 3. Short circuits from the output to V can cause excessive heating and eventual destruction. When considering short circuits + to ground, the maximum output current is approximately 40mA independent of the magnitude of V . At values of supply voltage in excess of +15V, continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction. Destructive dissipation can result from simultaneous shorts on all amplifiers. AP358 Document number: DS31007 Rev. 6 - 2 10 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Performance Characteristics Input offset Voltage vs Temperature Input Current vs Temperature 80 IB-Input Current(nADC) Input offset Voltage(mV) 3.0 V +=+30V DC 2.5 V +=+15V DC 2.0 V +=+5V DC 1.5 1.0 0.5 25 50 75 V +=+30V DC 60 V +=+15V DC 50 V +=+5V DC 40 30 20 10 0.0 0 V CM=0V DC 70 0 100 0 25 Temperature(℃) Input offset Current(nA) V CM=0V DC V +=+5V DC 3 V +=+15V DC 2 V +=+30V DC 1 0 0 25 50 75 100 18 CH1 15 CH2 12 9 V+ =15V 6 VIN- =1V VIN+ =0V 3 VO=2V 0 0 100 25 Temperature(℃) 50 75 100 Temperature(℃) Supply Current vs Temperature Output Current(Isink) vs Temperature 120 1.6 Supply Current(mA) Output Sink Current(μADC) 75 Output Current(Isink) vs Temperature Output Sink Current(mADC) Input offset Current vs Temperature 5 4 50 Temperature(℃) 100 CH1 80 CH2 V+=15V VIN-=1V 60 40 VIN+=0V 20 VO=200mV 1.4 1.2 V +=+30V DC 1 + V =+5V DC 0.8 0.6 0.4 0.2 0 0 0 25 50 75 100 Temperature(℃) AP358 Document number: DS31007 Rev. 6 - 2 0 25 50 75 100 Temperature(℃) 11 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Typical Performance Characteristics (Continued) Large Signal Frequency Response 100K 14 1.2 1 0.8 0.6 0.4 0.2 0 5 10 15 20 25 30 1K 12 10 +7VDC + Vo - Output Voltage (Vp-p) 1.4 - Supply Current Drain(mA) Supply Current +15 VDC V O 2K 8 6 4 2 0 35 1k 10k 25K 50K 75K 100K 500K 1M Input Frequency (Hz) Supply Voltage(V) Current Limit 40 30 20 + IO - 10 + IOUT-Current Drain(mA) 50 0 0 25 50 75 100 Temperature(℃) Voltage Follower Pulse Response AP358 Document number: DS31007 Rev. 6 - 2 Voltage Follower Pulse Response (Small Signal) 12 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Application Information The AP358 series are op amps which operate with only a single power supply voltage, have true-differential inputs, and remain in the linear mode with an input common-mode voltage of 0 VDC. These amplifiers operate over a wide range of power supply voltage with little change in performance characteristics. At 25°C amplifier operation is possible down to a minimum supply voltage of 2.3 VDC. Precautions should be taken to insure that the power supply for the integrated circuit never becomes reversed in polarity or that the unit is not inadvertently installed backwards in a test socket as an unlimited current surge through the resulting forward diode within the IC could cause fusing of the internal conductors and result in a destroyed unit. Large differential input voltages can be easily accommodated and, as input differential voltage protection diodes are not needed, no large input currents result from large differential input voltages. The differential input voltage may be larger than V+ without damaging the device. Protection should be provided to prevent the input voltages from going negative more than -0.3 VDC (at 25°C). An input clamp diode with a resistor to the IC input terminal can be used. To reduce the power supply current drain, the amplifiers have a class A output stage for small signal levels which converts to class B in a large signal mode. This allows the amplifiers to both source and sink large output currents. Therefore both NPN and PNP external current boost transistors can be used to extend the power capability of the basic amplifiers. The output voltage needs to raise approximately 1 diode drop above ground to bias the on-chip vertical PNP transistor for output current sinking applications. For ac applications, where the load is capacitively coupled to the output of the amplifier, a resistor should be used, from the output of the amplifier to ground to increase the class A bias current and prevent crossover distortion. Where the load is directly coupled, as in dc applications, there is no crossover distortion. Capacitive loads which are applied directly to the output of the amplifier reduce the loop stability margin. Values of 50pF can be accommodated using the worst-case non-inverting unity gain connection. Large closed loop gains or resistive isolation should be used if larger load capacitance must be driven by the amplifier. The bias network of the AP358 establishes a drain current which is independent of the magnitude of the power supply voltage over the range of 3 VDC to 30 VDC. Output short circuits either to ground or to the positive power supply should be of short time duration. Units can be destroyed, not as a result of the short circuit current causing metal fusing, but rather due to the large increase in IC chip dissipation which will cause eventual failure due to excessive function temperatures. Putting direct short-circuits on more than one amplifier at a time will increase the total IC power dissipation to destructive levels, if not properly protected with external dissipation limiting resistors in series with the output leads of the amplifiers. The larger value of output source current which is available at 25°C provides a larger output current capability at elevated temperatures (see typical performance characteristics) than a standard IC op amp. The circuits presented in the section on typical applications emphasize operation on only a single power supply voltage. If complementary power supplies are available, all of the standard op amp circuits can be used. + In general, introducing a pseudo-ground (a bias voltage reference of V /2) will allow operation above and below this value in single power supply systems. Many application circuits are shown which take advantage of the wide input common-mode voltage range which includes ground. In most cases, input biasing is not required and input voltages which range to ground can easily be accommodated. AP358 Document number: DS31007 Rev. 6 - 2 13 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Ordering Information AP 3 5 8 X X - X Device Lead-free Lead-free AP358SL-13 AP358SG-13 AP358NL-U AP358NG-U Notes: Package Lead Free S : SOP-8L N : PDIP-8L L : Lead Free G : Green Package Code Packaging (Note 10) S S N N SOP-8L SOP-8L PDIP-8L PDIP-8L Packing U : Tube 13 : Tape & Reel Tube Quantity Part Number Suffix NA NA NA NA 60 -U 60 -U 13” Tape and Reel Part Number Quantity Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13 NA NA NA NA 10. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. Marking Information (1) SOP-8L (Top View) 8 7 6 5 YY : Year : 08, 09,10~ WW : Week : 01~52; 52 represents 52 and 53 week X : Internal Code G : Green L : Lead Free Logo Part Number AP358 YY WW X X 1 2 3 4 (2) PDIP-8L (Top View) 8 7 6 5 YY : Year : 08, 09,10~ WW : Week : 01~52; 52 represents 52 and 53 week X : Internal Code G : Green L : Lead Free Logo Part Number AP358 YY WW X X 1 AP358 Document number: DS31007 Rev. 6 - 2 2 3 4 14 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS Package Outline Dimensions (All Dimensions in mm) 0.254 0.10/0.20 3.85/3.95 5.90/6.10 (1) Package type: SOP- 8L Gauge Plane Seating Plane 0.62/0.82 Detail "A" 7°~9° 0.15/0.25 1.30/1.50 1.75max. 0.35max. 45° 7°~9° Detail "A" 0°/8° 0.3/0.5 1.27typ 4.85/4.95 5.4 8x-0.60 8x-1.55 6x-1.27 Land Pattern Recommendation (Unit: mm) (2) Package type: PDIP- 8L AP358 Document number: DS31007 Rev. 6 - 2 15 of 16 www.diodes.com July 2010 © Diodes Incorporated AP358 LOW POWER DUAL OPERATIONAL AMPLIFIERS IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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