AP358 Low Power Dual Operational Amplifiers Features General Description - 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: Single supply: 3V to 32V Or dual supplies: ±1.5V to ±16V - Large output voltage swing: 0V to V+ - 1.5V - 8-pin PDIP and SOP Pb-Free packages 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. 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 supplies. Advantages - Eliminates need for dual supplies - Compatible with all forms of logic - Two internally compensated op amps - Power drain suitable for battery operation - Allows direct sensing near GND and VOUT also goes to GND Unique Characteristics -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 compensated. Pin Descriptions Pin Name OUTPUT 1 INVERTING INPUT 1 NON-INVERT ING INPUT 1 GND NON-INVERT ING INPUT 2 INVERTING INPUT 2 OUTPUT 2 V+ Pin # 1 2 3 4 5 Description Channel 1 Output Channel 1 Inverting Input Channel 1 Non-inverting Input Ground Channel 2 Non-inverting Input 6 Channel 2 Inverting Input 7 8 Channel 2 Output Chip Supply Voltage Pin Assignment (Top View) OUTPUT 1 1 INVERTING INPUT 1 2 NON-INVERTING INPUT 1 3 AP358 GND 4 8 V+ 7 6 OUTPUT 2 INVERTING INPUT 2 5 NON-INVERTING INPUT 2 SOP-8L/PDIP-8L This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 1.1 Oct 8, 2004 1/13 AP358 Low Power Dual Operational Amplifiers Ordering Information AP358 X X Package Packing N: PDIP-8L S: SOP-8L Blank: Tube A : Taping Block Diagram OUTPUT 1 INVERTING INPUT 1 1 8 V+ 2 7 OUTPUT 2 A NON-INVERTING INPUT 1 3 GND - B + + - 6 INVERTING INPUT 2 5 4 NON-INVERTING INPUT 2 Voltage Controlled Oscillator (VCO) R 100K 0.05µF - +VC* - 1/2 AP358 51K + R/2 51K V+/2 51K 1/2 AP358 OUTPUT1 + 51K 100K OUTPUT2 10K Anachip Corp. www.anachip.com.tw Rev. 1.1 Oct 8, 2004 2/13 AP358 Low Power Dual Operational Amplifiers Absolute Maximum Ratings Symbol VCC VIN PD Parameter Supply voltage Differential Input Voltage Input Voltage Molded DIP Small Outline Package (M) + o Output Short-Circuit to GND V < 15V and TA=25 C Input Current (VIN < -0.3V) (One Amplifier) (Note 2) Power Dissipation (Note1) Rating 32 32 -0.3 to +32 830 530 Continuous Unit V V V 40 mA (Note 3) TOP TST Operating Temperature Range Storage Temperature Range mW o 0 to +70 -65 to +150 o C C Electrical Characteristics (TA=25oC, V+=+5.0V, unless otherwise stated) (Note 4) Symbol VIO IB IIO VICM IS AV CMRR PSRR Parameter Input Offset Voltage Conditions TA=25oC IIN(+) or IIN(−), TA=25°C, Input Bias Current VCM=0V, (Note6) IIN(+) - IIN(−),VCM=0V, Input Offset Current TA=25°C V+=30V, (Note 7) Input Common-Mode Voltage Range TA=25°C + Supply Current RL=∞ on All V =30V Op Amps V+=5V Over Full Temperature Range V+=15V, TA=25°C, RL > 2kΩ, Large Signal Voltage Gain (For VO=1V to 11V) TA=25°C, VCM=0V to Common-Mode Rejection Ratio V+ -1.5V Power Supply Rejection Ratio V+=5V to 30V, TA=25°C f=1KHz to 20 KHz, TA=25°C Amplifier-to-Amplifier Coupling (Input Referred), (Note 5), Min. - Typ. 2 Max. 7 Unit mV - 45 250 nA - 5 50 nA 0 - V+ -1.5 V - 1 0.5 2 1.2 mA 25 100 - V/mV 65 85 - dB 65 100 - dB - -120 - dB (Note 8) Anachip Corp. www.anachip.com.tw Rev. 1.1 Oct 8, 2004 3/13 AP358 Low Power Dual Operational Amplifiers Electrical Characteristics (V+=+5.0V, unless otherwise stated) (Note 4) 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 2) V+=15V o RL=2kΩ, TA=25 C 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 VOL Source Short Circuit to Ground Output Voltage Swing (V+=30V) (V+=5V) Note 1: 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. + Note 2: Short circuits from the output to V can cause excessive heating and eventual destruction. When considering short cirucits 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. Note 3: 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). Note 4: The AP358 temperature specifications are limited to 0°C < TA < +70°C. + + Note 5: 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. Note 6: 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. Note 7: The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V (at + 25°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 . Note 8: 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. Anachip Corp. www.anachip.com.tw Rev. 1.1 Oct 8, 2004 4/13 AP358 Low Power Dual Operational Amplifiers Typical Single-Supply Circuit (V+ = 5.0 VDC) Non-Inverting DC Gain (0V Output) * +VIN +5V + +VO - VO (Volts) 1/2 AP358 R2 1M R1 10K GAIN=1+ VIN (mV) R 100K +V3 +V4 R1 910K + R 100K R 100K R 100K 1/2 AP358 R2 100K VO +VIN R 100K R 100K VO + RL Power Amplifier DC Summing Amplifier (VIN'S > 0 VDC and VO > 0 VDC ) R1 100K - C2 330pF 1/2 AP358 + VIN 1/2 AP358 R3 91K VO=0 VDC for VIN = 0 VDC AV =10 Where: VO=V1+V2-V3-V4 (V1+V2) > (V3+V4) to keep VO > 0 VDC R2 100K V+ - - R7 470K - R4 10M R3 100K 1/2 AP358 C1 330pF R5 470K + - VO R8 100K 1/2 AP358 f O = 1KHz Q = 50 R1 =101(as shown) *R not needed due to temperature independent IIN +V1 +V2 R2 + R6 100K C3 10µF + V+ "BI-QUAD" RC Active Bandpass Filter Anachip Corp. www.anachip.com.tw Rev. 1.1 Oct 8, 2004 5/13 AP358 Low Power Dual Operational Amplifiers Typical Single-Supply Circuit (V+ = 5.0 VDC) V+ R1* 0.1 + 2V R3 - 2K R1 2K + 2V - IL VL R4 2K R2 100 - RL + 1/2 AP358 - 1/2 AP358 I1 + R2 3K I2 1mA VO R3 1K I1 = I2 1V(IL) 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 LED Driver 600mA 100 + + β > 20 Lamp Driver - 1/2 AP358 RL 240 + +VIN Driving TTL 0.001µF R1 1M IN914 R2 100K IN914 V+ + VO = VIN Voltage Follower R1 100K C 0.001µF - - VO 1/2 AP358 VO 1/2 AP358 R3 100K VO 1/2 AP358 + R5 100K R2 100K + 0 V+ + R4 100K + 0 R3 100K R4 100K Squarewave Oscillator Pulse Generator Anachip Corp. www.anachip.com.tw Rev. 1.1 Oct 8, 2004 6/13 AP358 Low Power Dual Operational Amplifiers Typical Single-Supply Circuit (V+ = 5.0 VDC) IB 1/2 AP358 +VIN 1/2 AP358 IB + C 1µF + 2N929* ZIN VO ZOUT 2IB 0.001µF *hi β AT 100 nA IB (POLYCARBONATE OR POLYETHYLENE) HIGH ZIN LOW ZOUT + 3R 3M 2IB 1/2 AP358 - R IM AUX AMP INPUT CURRENT COMPENSATION IB Low Drift Peak Detector R1 30K R2 150K IN914 - 0.01µF 1/2 AP358 VO 1/2 AP358 + R3 100K V+ IO + +VIN - + 0 R5 100K I O =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 V+/2 51K 51K OUTPUT1 + 100K OUTPUT2 10K *WIDE CONTROL VOLTAGE RANGE: 0 VDC < VC < 2 (V+ -1.5VDC) Voltage Controlled Oscillator (VCO) Anachip Corp. www.anachip.com.tw Rev. 1.1 Oct 8, 2004 7/13 AP358 Low Power Dual Operational Amplifiers Typical Single-Supply Circuit (V+ = 5.0 VDC) Rf 10K R1 CIN 10K - +VIN R1 10K +VREF 1/2 AP358 + VO VIN - + 1/2 AP358 R2 10M C1 10µF R1 100K R1 1M VR - R +VCM R3 1M + - VIN C2 0.01µF + fO = 1KHz Q=1 AV=2 CO 1/2 AP358 + R3 1M + C2 10µF R5 100K 3 Vpp AV=11(As Shown) R2 AV=1+ R1 V+ R4 100K R1 100K - R3 100K 1/2 AP358 VO 1/2 AP358 0 VO RL 10K RB 6.2K R4 100K R2 100K + - (As shown, AV=10) AC Coupled Non-Inverting Amplifier C1 0.01µF R2 16K R1 - CIN R4 1M Ground Referencing a Differential Input Signal R1 16K Rf R2 1M C1 0.1µF VO 1/2 AP358 V O=VR VIN AV= 3 Vpp RL 10K R3 100K + 0 VO AC Coupled Inverting Amplifier Comparator with Hysteresis + RB 6.2K + R2 100K V+ R2 1M CO + +V1 R3 100K V O 1/2 AP358 VO + +V2 R1 R4 100K 0 fO R4 (CMRR depends on this For = R2 R3 resistor ratio match) R4 )(V2-V1) V O = (1+ R3 As Shown: VO = 2(V2-V1) High Input Z, DC Differential Amplifier DC Coupled Low-Pass RC Active Filter Anachip Corp. www.anachip.com.tw Rev. 1.1 Oct 8, 2004 8/13 AP358 Low Power Dual Operational Amplifiers Typical Single-Supply Circuit (V+ = 5.0 VDC) C1 0.01µF V IN R1 390K R4 390K C2 0.01µF - R3 680 R2 620K R5 39K 1/2 AP358 - + 1/2 AP358 R7 100K + C3 10µF fO = 1.12KHz Q = 25 R6 120K VO + R8 100K V+ Bandpass Active Filter R2 100K - - R3 R4 100K 100K IIN 1/2 AP358 +V1 R1 2K + 2N929* VO *hi β AT 50 nA + 0.001µF IB 1/2 AP358 +V2 1/2 AP358 R5 100K 1/2 AP358 + R6 100K R7 100K R 1.5M If R1 = R5 & R3 = R4 = R6 = R7 (CMRR depends on match) 2R2 V O =( 1+ )(V2-V1) R1 As Shown: VO = 101(V2-V1) +VO + IB - GAIN ADJUST - IB +VIN IB 2R 3M IB 1/2 AP358 + AUX AMP INPUT CURRENT COMPENSATION Using Symmetrical Amplifiers to Reduce Input Current (General Concept) High Input Z Adjustable-Gain DC Instrumentation Amplifier Anachip Corp. www.anachip.com.tw Rev. 1.1 Oct 8, 2004 9/13 AP358 Low Power Dual Operational Amplifiers Typical Characteristics (at TA=25oC) Large Signal Frequency Response Supply Current 14 1 V+ ID mA 0.6 0.4 + 0.2 0 5V 10V 15V 20V 25V 30V 1K 10 +7VDC 8 4 2 0 1k 35V 10k VO 20 0 40 30 20 10 + IO + Iout - Current Drain(mA) V+/2 40 K 1M K K Input Frequency (Hz) 50 0 30 0 10 0 10 K 1K 10 0 0 10 1 1M 50 - Voltage Gain (dB) V+ + 60 V+=15V 75K 100K 500K Current Limit - 80 50K 60 10M + V =30V 0.1µF VIN 25K Input Frequency (Hz) Open Loop Frequency Response 100 2K 6 Supply Voltage (V) 120 +15 VDC V O + 0.8 100K 12 - Vo - Output Voltage (Vp-p) 1.2 - Supply Current Drain (mA) 1.4 -40 0 25 41 60 o Temperature ( C) 80 100 125 Voltage Follower Pulse Response (Small Signal) Voltage Follower Pulse Response - TA=25oC RL > 2.0K V+ = 15VDC Anachip Corp. www.anachip.com.tw + ein eO 50pF TA = +25oC V+ = +30VDC Rev. 1.1 Oct 8, 2004 10/13 AP358 Low Power Dual Operational Amplifiers Application Information Capacitive loads which are applied directly to the output of the amplifier reduce the loop stability margin. Values of 50pF can be accomodated 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 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. 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. 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. 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. 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. 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. 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. Anachip Corp. www.anachip.com.tw Rev. 1.1 Oct 8, 2004 11/13 AP358 Low Power Dual Operational Amplifiers Marking Information (Top View) 5 8 Logo AP358 YY WW X Part No. 1 ID code: internal Xth week: 01~52 Year: "01" =2001 "02" =2002 4 ~ SOP-8L/PDIP-8L Package Information (1) PDIP-8L (Plastic Dual-in-line Package ) D E1 E-PIN O0.118 inch E 15 (4X) PIN #1 INDENT O0.025 DEEP 0.006-0.008 inch 7 (4X) C A1 L A A2 eB B S Symbol A A1 A2 B B1 B2 C D E E1 e L eB S e B1 B2 Dimensions in millimeters Min. Nom. Max. 5.33 0.38 3.1 3.30 3.5 0.36 0.46 0.56 1.4 1.52 1.65 0.81 0.99 1.14 0.20 0.25 0.36 9.02 9.27 9.53 7.62 7.94 8.26 6.15 6.35 6.55 2.54 2.92 3.3 3.81 8.38 8.89 9.40 0.71 0.84 0.97 Anachip Corp. www.anachip.com.tw Dimensions in inches Min. Nom. Max. 0.210 0.015 0.122 0.130 0.138 0.014 0.018 0.022 0.055 0.060 0.065 0.032 0.039 0.045 0.008 0.010 0.014 0.355 0.365 0.375 0.300 0.313 0.325 0.242 0.250 0.258 0.100 0.115 0.130 0.150 0.330 0.350 0.370 0.028 0.033 0.038 Rev. 1.1 Oct 8, 2004 12/13 AP358 Low Power Dual Operational Amplifiers Package Information (Continued) H E (2) SOP- 8L(JEDEC Small Outline Package) L VIEW "A" D 0.015x45 7 (4X) e B A1 C A A2 7 (4X) VIEW "A" y Symbol A A1 A2 B C D E e H L y θ Dimensions In Millimeters Min. Nom. Max. 1.40 1.60 1.75 0.10 0.25 1.30 1.45 1.50 0.33 0.41 0.51 0.19 0.20 0.25 4.80 5.05 5.30 3.70 3.90 4.10 1.27 5.79 5.99 6.20 0.38 0.71 1.27 0.10 0O 8O Anachip Corp. www.anachip.com.tw Dimensions In Inches Min. Nom. Max. 0.055 0.063 0.069 0.040 0.100 0.051 0.057 0.059 0.013 0.016 0.020 0.0075 0.008 0.010 0.189 0.199 0.209 0.146 0.154 0.161 0.050 0.228 0.236 0.244 0.015 0.028 0.050 0.004 0O 8O Rev. 1.1 Oct 8, 2004 13/13