AP358

AP358 Low Power Dual Operational Amplifiers Features - 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 General Description 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 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 6 7 8 Description Channel 1 Output Channel 1 Inverting Input Channel 1 Non-inverting Input Ground Channel 2 Non-inverting Input Channel 2 Inverting Input Channel 2 Output Chip Supply Voltage 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 Assignment (Top View) OUTPUT 1 1 INVERTING INPUT 1 2 NON-INVERTING INPUT 1 3 GND 4 8 AP358 7 6 5 V+ OUTPUT 2 INVERTING INPUT 2 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 N: PDIP-8L S: SOP-8L Packing Blank: Tube A : Taping Block Diagram OUTPUT 1 1 8 V+ INVERTING INPUT 1 2 A B ++ - 7 OUTPUT 2 NON-INVERTING INPUT 1 3 - 6 INVERTING INPUT 2 GND 4 5 NON-INVERTING INPUT 2 Voltage Controlled Oscillator (VCO) R 100K +VC* 51K 0.05µF 1/2 AP358 + V+/2 51K 1/2 AP358 + 100K OUTPUT2 10K OUTPUT1 R/2 51K 51K Anachip Corp. www.anachip.com.tw 2/13 Rev. 1.1 Oct 8, 2004 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) (Note 3) Rating 32 32 -0.3 to +32 830 530 Continuous 40 0 to +70 -65 to +150 Unit V V V mW mA o o TOP TST Operating Temperature Range Storage Temperature Range C C Electrical Characteristics (TA=25oC, V+=+5.0V, unless otherwise stated) (Note 4) Symbol VIO IB IIO VICM IS AV CMRR PSRR 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), (Note 8) Parameter Input Offset Voltage Min. 0 25 65 65 - Typ. 2 45 5 1 0.5 100 85 100 -120 Max. 7 250 50 V+ -1.5 2 1.2 - Unit mV nA nA V mA V/mV dB dB dB Anachip Corp. www.anachip.com.tw 3/13 Rev. 1.1 Oct 8, 2004 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. 10 20 20 26 27 - Typ. 20 70 40 40 28 5 Max. 60 20 Unit mA µA mA mA V V mV ISINK Output Current ISOURCE ISC VOH VOL Sink 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 4/13 Rev. 1.1 Oct 8, 2004 AP358 Low Power Dual Operational Amplifiers Typical Single-Supply Circuit (V+ = 5.0 VDC) Non-Inverting DC Gain (0V Output) +VIN * + 1/2 AP358 R2 1M +VO +5V VO (Volts) GAIN=1+ R2 R1 R1 10K *R not needed due to temperature independent IIN =101(as shown) VIN (mV) R 100K +V1 +V2 + R 100K R 100K R 100K R1 910K R2 100K V+ 1/2 AP358 - VO R3 91K 1/2 AP358 + +V3 +V4 R 100K R 100K +VIN VO RL Where: VO=V1+V2-V3-V4 (V1+V2) > (V3+V4) to keep VO > 0 VDC VO=0 VDC for VIN = 0 VDC AV =10 DC Summing Amplifier (VIN'S > 0 VDC and VO > 0 VDC ) R1 100K Power Amplifier R2 100K VIN R3 100K C1 330pF C2 330pF R7 470K 1/2 AP358 + R4 10M 1/2 AP358 R5 470K + VO R8 100K - 1/2 AP358 f O = 1KHz Q = 50 + R6 100K C3 10µF + V+ "BI-QUAD" RC Active Bandpass Filter Anachip Corp. www.anachip.com.tw 5/13 Rev. 1.1 Oct 8, 2004 AP358 Low Power Dual Operational Amplifiers Typical Single-Supply Circuit (V+ = 5.0 VDC) V+ + 2V R3 - 2K VL R2 100 R1* 0.1 IL + 2V - R1 2K R4 2K + 1/2 AP358 - RL 1/2 AP358 + R2 3K I1 1mA I1 = I2 I2 R3 1K VO Fixed Current Sources Current Monitor 0.1A *(Increase R1 for I small) L VL < V+ -2V VO = 1V(IL) V+ 1/2 AP358 + 20mA 82 1/2 AP358 + 30mA 100 β > 20 600mA LED Driver 1/2 AP358 + RL 240 Lamp Driver 1/2 AP358 +VIN VO + Driving TTL R1 1M R2 100K 0.001µF IN914 IN914 VO = VIN Voltage Follower R1 100K C 0.001µF 1/2 AP358 VO + 0 V+ R3 100K R2 100K VO + 0 1/2 AP358 + R4 100K R3 100K V+ R4 100K + R5 100K Pulse Generator Squarewave Oscillator Anachip Corp. www.anachip.com.tw 6/13 Rev. 1.1 Oct 8, 2004 AP358 Low Power Dual Operational Amplifiers Typical Single-Supply Circuit (V+ = 5.0 VDC) IB 1/2 AP358 +VIN ZIN (POLYCARBONATE OR POLYETHYLENE) HIGH ZIN LOW ZOUT 2IB C 1µF 2N929* *hi β AT 100 nA IB 1/2 AP358 + 2IB 0.001µF IB 3R 3M ZOUT VO + + 1/2 AP358 AUX AMP INPUT CURRENT COMPENSATION R IM IB Low Drift Peak Detector R1 30K IN914 +VIN + 1/2 AP358 IO R2 150K 0.01µF 1/2 AP358 VO + 0 - R3 100K V+ R4 100K + R5 100K I O =0.1 amp / volt VIN (increase RE for IO small) RL 10 Pulse Generator 0.05µF R 100K High Compliance Current Sink +VC* 51K R/2 50K 1/2 AP358 + V+/2 51K 51K 1/2 AP358 + 100K OUTPUT2 10K OUTPUT1 *WIDE CONTROL VOLTAGE RANGE: 0 VDC < VC < 2 (V+ -1.5VDC) Voltage Controlled Oscillator (VCO) Anachip Corp. www.anachip.com.tw 7/13 Rev. 1.1 Oct 8, 2004 AP358 Low Power Dual Operational Amplifiers Typical Single-Supply Circuit (V+ = 5.0 VDC) Rf 10K +VIN R1 10K +VREF - R1 CIN 10K 1/2 AP358 + R2 10M VO VIN + 1/2 AP358 R2 100K CO RB 6.2K R3 100K AV= Rf R1 0 VO RL 10K 3 Vpp + + V+ C1 10µF (As shown, AV=10) Comparator with Hysteresis R1 1M R2 1M R R3 1M R1 100K AC Coupled Inverting Amplifier R2 1M + 1/2 AP358 R4 1M VIN VR +VCM + VO C1 0.1µF CIN + R3 1M + C2 10µF 1/2 AP358 + R4 100K R5 100K V+ CO RB 6.2K 0 VO RL 10K 3 Vpp V O=VR AV=11(As Shown) R2 AV=1+ R1 Ground Referencing a Differential Input Signal AC Coupled Non-Inverting Amplifier R2 100K R1 100K C1 0.01µF R1 16K R2 16K C2 0.01µF R4 100K R3 100K VIN + 1/2 AP358 R3 100K V O R4 100K VO 1/2 AP358 +V1 +V2 1/2 AP358 + VO + fO = 1KHz Q=1 AV=2 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) R1 DC Coupled Low-Pass RC Active Filter High Input Z, DC Differential Amplifier Anachip Corp. www.anachip.com.tw 8/13 Rev. 1.1 Oct 8, 2004 AP358 Low Power Dual Operational Amplifiers Typical Single-Supply Circuit (V+ = 5.0 VDC) C1 0.01µF R1 390K C2 0.01µF R3 680 R2 620K + C3 10µF fO = 1.12KHz Q = 25 R4 390K R6 120K R5 39K V IN 1/2 AP358 + R7 100K R8 100K V+ 1/2 AP358 + VO Bandpass Active Filter R2 100K 1/2 AP358 +V1 R1 2K R3 R4 100K 100K +VIN IIN IB IB 1/2 AP358 + +VO + GAIN ADJUST R5 100K 1/2 AP358 + VO 2N929* *hi β AT 50 nA IB 0.001µF IB 2R 3M - 1/2 AP358 + AUX AMP INPUT CURRENT COMPENSATION 1/2 AP358 +V2 + R6 100K R7 100K If R1 = R5 & R3 = R4 = R6 = R7 (CMRR depends on match) 2R2 V O =( 1+ )(V2-V1) R1 As Shown: VO = 101(V2-V1) R 1.5M IB High Input Z Adjustable-Gain DC Instrumentation Amplifier Using Symmetrical Amplifiers to Reduce Input Current (General Concept) Anachip Corp. www.anachip.com.tw 9/13 Rev. 1.1 Oct 8, 2004 AP358 Low Power Dual Operational Amplifiers Typical Characteristics (at TA=25oC) Supply Current Vo - Output Voltage (Vp-p) 1.4 Large Signal Frequency Response 14 12 10 8 6 4 2 0 1k 10k 25K 50K 75K 100K 500K 1M +7VDC 1K 100K +15 VDC V O 2K Supply Current Drain (mA) 1.2 1 0.8 0.6 0.4 0.2 0 5V 10V 15V 20V 25V 30V 35V mA V+ ID + Supply Voltage (V) Open Loop Frequency Response 120 + 10M Input Frequency (Hz) Current Limit 60 Iout - Current Drain(mA) Voltage Gain (dB) 100 80 60 40 20 0 V =30V 0.1µF VIN + V+ 50 40 30 20 10 0 + IO VO V+=15V V+/2 + + K K 10 10 0 10 K K 1 1M 1K 30 0 10 0 50 0 -40 0 25 Input Frequency (Hz) Temperature ( C) 41 60 o 80 100 125 Voltage Follower Pulse Response Voltage Follower Pulse Response (Small Signal) TA=25oC RL > 2.0K V+ = 15VDC ein eO 50pF TA = +25oC V+ = +30VDC + Anachip Corp. www.anachip.com.tw 10/13 Rev. 1.1 Oct 8, 2004 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 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 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. Anachip Corp. www.anachip.com.tw 11/13 Rev. 1.1 Oct 8, 2004 AP358 Low Power Dual Operational Amplifiers Marking Information (Top View) 8 5 Logo Part No. AP358 YY WW X 1 4 ID code: internal Xth week: 01~52 Year: "01" =2001 "02" =2002 ~ SOP-8L/PDIP-8L Package Information (1) PDIP-8L (Plastic Dual-in-line Package ) D E-PIN O0.118 inch E1 E 15 (4X) PIN #1 INDENT O0.025 DEEP 0.006-0.008 inch 7 (4X) eB A2 A C L B S e B1 B2 Symbol A A1 A2 B B1 B2 C D E E1 e L eB S 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 A1 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 Anachip Corp. www.anachip.com.tw 12/13 Rev. 1.1 Oct 8, 2004 AP358 Low Power Dual Operational Amplifiers Package Information (Continued) (2) SOP- 8L(JEDEC Small Outline Package) E H L VIEW "A" D 7 (4X) A2 A 0.015x45 7 (4X) A1 e B y C VIEW "A" 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 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 Anachip Corp. www.anachip.com.tw 13/13 Rev. 1.1 Oct 8, 2004